The QUdpSocket class can be used to send and receive UDP datagrams. UDP is an unreliable, datagram-oriented protocol. Some application-level protocols use UDP because it is more lightweight than TCP. With UDP, data is sent as packets (datagrams) from one host to another. There is no concept of connection, and if a UDP packet doesn't get delivered successfully, no error is reported to the sender.
We will see how to use UDP from a Qt application through the Weather Balloon and Weather Station example. The Weather Balloon application mimics a weather balloon that sends a UDP datagram (presumably using a wireless connection) containing the current atmospheric conditions every two seconds. The Weather Station application (shown in Figure 15.3), receives these datagrams and displays them on-screen. We will start by reviewing the code for the Weather Balloon.
class WeatherBalloon : public QPushButton { Q_OBJECT public: WeatherBalloon(QWidget *parent = 0); double temperature() const; double humidity() const; double altitude() const; private slots: void sendDatagram(); private: QUdpSocket udpSocket; QTimer timer; };
The WeatherBalloon class is derived from QPushButton. It uses its QUdpSocket private variable for communicating with the Weather Station.
WeatherBalloon::WeatherBalloon(QWidget *parent) : QPushButton(tr("Quit"), parent) { connect(this, SIGNAL(clicked()), this, SLOT(close())); connect(&timer, SIGNAL(timeout()), this, SLOT(sendDatagram())); timer.start(2 * 1000); setWindowTitle(tr("Weather Balloon")); }
In the constructor, we start a QTimer to invoke sendDatagram() every 2 seconds.
void WeatherBalloon::sendDatagram() { QByteArray datagram; QDataStream out(&datagram, QIODevice::WriteOnly); out.setVersion(QDataStream::Qt_4_3); out << QDateTime::currentDateTime() << temperature() << humidity() << altitude(); udpSocket.writeDatagram(datagram, QHostAddress::LocalHost, 5824); }
In sendDatagram(), we generate and send a datagram containing the current date, time, temperature, humidity, and altitude:
| QDateTime | Date and time of measurement |
| double | Temperature (in °C) |
| double | Humidity (in %) |
| double | Altitude (in meters) |
The datagram is sent using QUdpSocket::writeDatagram(). The second and third arguments to writeDatagram() are the IP address and the port number of the peer (the Weather Station). For this example, we assume that the Weather Station is running on the same machine as the Weather Balloon, so we use an IP address of <IP_ADDRESS> (QHostAddress::LocalHost), a special address that designates the local host.
Unlike QTcpSocket::connectToHost(), QUdpSocket::writeDatagram() does not accept host names, only host addresses. If we wanted to resolve a host name to its IP address here, we have two choices. If we are prepared to block while the lookup takes place, we can use the static QHostInfo::fromName() function. Otherwise, we can use the static QHostInfo::lookupHost() function, which returns immediately and calls the slot it is passed with a QHostInfo object containing the corresponding addresses when the lookup is complete.
int main(int argc, char *argv[]) { QApplication app(argc, argv); WeatherBalloon balloon; balloon.show(); return app.exec(); }
The main() function simply creates a WeatherBalloon object, which serves both as a UDP peer and as a QPushButton on-screen. By clicking the QPushButton, the user can quit the application.
Now let's review the source code for the Weather Station client.
class WeatherStation : public QDialog { Q_OBJECT public: WeatherStation(QWidget *parent = 0); private slots: void processPendingDatagrams(); private: QUdpSocket udpSocket; QLabel *dateLabel; QLabel *timeLabel; ... QLineEdit *altitudeLineEdit; };
The WeatherStation class is derived from QDialog. It listens to a particular UDP port, parses any incoming datagrams (from the Weather Balloon), and displays their contents in five read-only QLineEdits. The only private variable of interest here is udpSocket of type QUdpSocket, which we will use to receive datagrams.
WeatherStation::WeatherStation(QWidget *parent) : QDialog(parent) { udpSocket.bind(5824); connect(&udpSocket, SIGNAL(readyRead()), this, SLOT(processPendingDatagrams())); ... }
In the constructor, we start by binding the QUdpSocket to the port that the weather balloon is transmitting to. Since we have not specified a host address, the socket will accept datagrams sent to any IP address that belongs to the machine the Weather Station is running on. Then, we connect the socket's readyRead() signal to the private processPendingDatagrams() that extracts and displays the data.
void WeatherStation::processPendingDatagrams() { QByteArray datagram; do { datagram.resize(udpSocket.pendingDatagramSize()); udpSocket.readDatagram(datagram.data(), datagram.size()); } while (udpSocket.hasPendingDatagrams()); QDateTime dateTime; double temperature; double humidity; double altitude; QDataStream in(&datagram, QIODevice::ReadOnly); in.setVersion(QDataStream::Qt_4_3); in >> dateTime >> temperature >> humidity >> altitude; dateLineEdit->setText(dateTime.date().toString()); timeLineEdit->setText(dateTime.time().toString()); temperatureLineEdit->setText(tr("%1 °C").arg(temperature)); humidityLineEdit->setText(tr("%1%").arg(humidity)); altitudeLineEdit->setText(tr("%1 m").arg(altitude)); }
The processPendingDatagrams() slot is called when a datagram has arrived. QUdpSocket queues the incoming datagrams and lets us access them one at a time. Normally, there should be only one datagram, but we can't exclude the possibility that the sender would send a few datagrams in a row before the readyRead() signal is emitted. In that case, we can ignore all the datagrams except the last one, since the earlier ones contain obsolete atmospheric conditions.
The pendingDatagramSize() function returns the size of the first pending datagram. From the application's point of view, datagrams are always sent and received as a single unit of data. This means that if any bytes are available, an entire datagram can be read. The readDatagram() call copies the contents of the first pending datagram into the specified char * buffer (truncating data if the buffer is too small) and advances to the next pending datagram. Once we have read all the datagrams, we decompose the last one (the one with the most recent atmospheric measurements) into its parts and populate the QLineEdits with the new data.
int main(int argc, char *argv[]) { QApplication app(argc, argv); WeatherStation station; station.show(); return app.exec(); }
Finally, in main(), we create and show the WeatherStation.
We have now finished our UDP sender and receiver. The applications are as simple as possible, with the Weather Balloon sending datagrams and the Weather Station receiving them. In most real-world applications, both applications would need to both read and write on their socket. The QUdpSocket::writeDatagram() functions can be passed a host address and port number, so the QUdpSocket can read from the host and port it is bound to with bind(), and write to some other host and port.


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module Kryptos
K1, K2, K3, K4¶ ↑
These are the four parts of the Kryptos sculpture (en.wikipedia.org/wiki/Kryptos).
Constants
- EXAMPLE_PLAYFAIR_TABLE
This is an example of a Playfair cipher table.
- EXAMPLE_VIGENERE_TABLE
Example Tables¶ ↑
This is an example of a Vigenere cipher table.
- K1
This is the first section of the ciphertext.
- K2
I've added an extra 'S' eight characters before the end of K2 in order to correct Jim's error (the final words should be “X LAYER TWO” and not “ID BY ROWS”).
- K3
I've omitted the final '?' from K3 in order to facilitate correct transposition.
- K4
This is the final (and as-yet untranslated) section of the ciphertext. According to Jim, NYPVTT deciphers to BERLIN.


# Truthy -- JavaScript has a concept of truthy i.e. things that evaluate like true would in certain positions (e.g. if conditions and the boolean && || operators). ```js if (123) { // Will be treated like `true` console.log('Any number other than 0 is truthy'); } ``` --- ### Chart Something that isn't truthy is called falsy. | Variable Type | When it is *falsy* | When it is *truthy* | |-----------------|--------------------------|--------------------------| | `boolean` | `false` | `true` | | `string` | `''` (empty string) | any other string | | `number` | `0` `NaN` | any other number | | `null` | always | never | | `undefined` | always | never | | Any other Object including empty ones like `{}`,`[]` | never | always | --- ### Being explicit > The !! pattern boolean (one of true|false). You can easily convert values to a true boolean by prefixing it with !! e.g. !!foo. Its just ! used twice. --- ### truthy -!> false -!> true ```js // Direct variables const hasName = !!name; // As members of objects const someObj = { hasName: !!name } // e.g. in ReactJS JSX {!!someName &&
{someName}
} ``` --- # The End


| 1 | /* =========================================================== | |
| 2 | * JFreeChart : a free chart library for the Java(tm) platform | |
| 3 | * =========================================================== | |
| 4 | * | |
| 5 | * (C) Copyright 2000-2009, by Object Refinery Limited and Contributors. | |
| 6 | * | |
| 7 | * Project Info: http://www.jfree.org/jfreechart/index.html | |
| 8 | * | |
| 9 | * This library is free software; you can redistribute it and/or modify it | |
| 10 | * under the terms of the GNU Lesser General Public License as published by | |
| 11 | * the Free Software Foundation; either version 2.1 of the License, or | |
| 12 | * (at your option) any later version. | |
| 13 | * | |
| 14 | * This library is distributed in the hope that it will be useful, but | |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
| 16 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public | |
| 17 | * License for more details. | |
| 18 | * | |
| 19 | * You should have received a copy of the GNU Lesser General Public | |
| 20 | * License along with this library; if not, write to the Free Software | |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, | |
| 22 | * USA. | |
| 23 | * | |
| 24 | * [Java is a trademark or registered trademark of Sun Microsystems, Inc. | |
| 25 | * in the United States and other countries.] | |
| 26 | * | |
| 27 | * -------------------- | |
| 28 | * XYBoxAnnotation.java | |
| 29 | * -------------------- | |
| 30 | * (C) Copyright 2005-2009, by Object Refinery Limited and Contributors. | |
| 31 | * | |
| 32 | * Original Author: David Gilbert (for Object Refinery Limited); | |
| 33 | * Contributor(s): Peter Kolb (see patch 2809117); | |
| 34 | * | |
| 35 | * Changes: | |
| 36 | * -------- | |
| 37 | * 19-Jan-2005 : Version 1 (DG); | |
| 38 | * 06-Jun-2005 : Fixed equals() method to handle GradientPaint (DG); | |
| 39 | * 20-Jun-2007 : Removed JCommon dependencies (DG); | |
| 40 | * | |
| 41 | */ | |
| 42 | ||
| 43 | package org.jfree.chart.annotations; | |
| 44 | ||
| 45 | import java.awt.BasicStroke; | |
| 46 | import java.awt.Color; | |
| 47 | import java.awt.Graphics2D; | |
| 48 | import java.awt.Paint; | |
| 49 | import java.awt.Stroke; | |
| 50 | import java.awt.geom.Rectangle2D; | |
| 51 | import java.io.IOException; | |
| 52 | import java.io.ObjectInputStream; | |
| 53 | import java.io.ObjectOutputStream; | |
| 54 | import java.io.Serializable; | |
| 55 | ||
| 56 | import org.jfree.chart.axis.ValueAxis; | |
| 57 | import org.jfree.chart.plot.Plot; | |
| 58 | import org.jfree.chart.plot.PlotOrientation; | |
| 59 | import org.jfree.chart.plot.PlotRenderingInfo; | |
| 60 | import org.jfree.chart.plot.XYPlot; | |
| 61 | import org.jfree.chart.util.ObjectUtilities; | |
| 62 | import org.jfree.chart.util.PaintUtilities; | |
| 63 | import org.jfree.chart.util.PublicCloneable; | |
| 64 | import org.jfree.chart.util.RectangleEdge; | |
| 65 | import org.jfree.chart.util.SerialUtilities; | |
| 66 | ||
| 67 | /** | |
| 68 | * A box annotation that can be placed on an {@link XYPlot}. The | |
| 69 | * box coordinates are specified in data space. | |
| 70 | */ | |
| 71 | public class XYBoxAnnotation extends AbstractXYAnnotation | |
| 72 | implements Cloneable, PublicCloneable, Serializable { | |
| 73 | ||
| 74 | /** For serialization. */ | |
| 75 | private static final long serialVersionUID =<PHONE_NUMBER>526757457L; | |
| 76 | ||
| 77 | /** The lower x-coordinate. */ | |
| 78 | private double x0; | |
| 79 | ||
| 80 | /** The lower y-coordinate. */ | |
| 81 | private double y0; | |
| 82 | ||
| 83 | /** The upper x-coordinate. */ | |
| 84 | private double x1; | |
| 85 | ||
| 86 | /** The upper y-coordinate. */ | |
| 87 | private double y1; | |
| 88 | ||
| 89 | /** The stroke used to draw the box outline. */ | |
| 90 | private transient Stroke stroke; | |
| 91 | ||
| 92 | /** The paint used to draw the box outline. */ | |
| 93 | private transient Paint outlinePaint; | |
| 94 | ||
| 95 | /** The paint used to fill the box. */ | |
| 96 | private transient Paint fillPaint; | |
| 97 | ||
| 98 | /** | |
| 99 | * Creates a new annotation (where, by default, the box is drawn | |
| 100 | * with a black outline). | |
| 101 | * | |
| 102 | * @param x0 the lower x-coordinate of the box (in data space). | |
| 103 | * @param y0 the lower y-coordinate of the box (in data space). | |
| 104 | * @param x1 the upper x-coordinate of the box (in data space). | |
| 105 | * @param y1 the upper y-coordinate of the box (in data space). | |
| 106 | */ | |
| 107 | public XYBoxAnnotation(double x0, double y0, double x1, double y1) { | |
| 108 | this(x0, y0, x1, y1, new BasicStroke(1.0f), Color.black); | |
| 109 | } | |
| 110 | ||
| 111 | /** | |
| 112 | * Creates a new annotation where the box is drawn as an outline using | |
| 113 | * the specified stroke and outlinePaint. | |
| 114 | * | |
| 115 | * @param x0 the lower x-coordinate of the box (in data space). | |
| 116 | * @param y0 the lower y-coordinate of the box (in data space). | |
| 117 | * @param x1 the upper x-coordinate of the box (in data space). | |
| 118 | * @param y1 the upper y-coordinate of the box (in data space). | |
| 119 | * @param stroke the shape stroke (null permitted). | |
| 120 | * @param outlinePaint the shape color (null permitted). | |
| 121 | */ | |
| 122 | public XYBoxAnnotation(double x0, double y0, double x1, double y1, | |
| 123 | Stroke stroke, Paint outlinePaint) { | |
| 124 | this(x0, y0, x1, y1, stroke, outlinePaint, null); | |
| 125 | } | |
| 126 | ||
| 127 | /** | |
| 128 | * Creates a new annotation. | |
| 129 | * | |
| 130 | * @param x0 the lower x-coordinate of the box (in data space). | |
| 131 | * @param y0 the lower y-coordinate of the box (in data space). | |
| 132 | * @param x1 the upper x-coordinate of the box (in data space). | |
| 133 | * @param y1 the upper y-coordinate of the box (in data space). | |
| 134 | * @param stroke the shape stroke (null permitted). | |
| 135 | * @param outlinePaint the shape color (null permitted). | |
| 136 | * @param fillPaint the paint used to fill the shape (null | |
| 137 | * permitted). | |
| 138 | */ | |
| 139 | public XYBoxAnnotation(double x0, double y0, double x1, double y1, | |
| 140 | Stroke stroke, Paint outlinePaint, Paint fillPaint) { | |
| 141 | super(); | |
| 142 | this.x0 = x0; | |
| 143 | this.y0 = y0; | |
| 144 | this.x1 = x1; | |
| 145 | this.y1 = y1; | |
| 146 | this.stroke = stroke; | |
| 147 | this.outlinePaint = outlinePaint; | |
| 148 | this.fillPaint = fillPaint; | |
| 149 | } | |
| 150 | ||
| 151 | /** | |
| 152 | * Draws the annotation. This method is usually called by the | |
| 153 | * {@link XYPlot} class, you shouldn't need to call it directly. | |
| 154 | * | |
| 155 | * @param g2 the graphics device. | |
| 156 | * @param plot the plot. | |
| 157 | * @param dataArea the data area. | |
| 158 | * @param domainAxis the domain axis. | |
| 159 | * @param rangeAxis the range axis. | |
| 160 | * @param rendererIndex the renderer index. | |
| 161 | * @param info the plot rendering info. | |
| 162 | */ | |
| 163 | public void draw(Graphics2D g2, XYPlot plot, Rectangle2D dataArea, | |
| 164 | ValueAxis domainAxis, ValueAxis rangeAxis, | |
| 165 | int rendererIndex, PlotRenderingInfo info) { | |
| 166 | ||
| 167 | PlotOrientation orientation = plot.getOrientation(); | |
| 168 | RectangleEdge domainEdge = Plot.resolveDomainAxisLocation( | |
| 169 | plot.getDomainAxisLocation(), orientation); | |
| 170 | RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation( | |
| 171 | plot.getRangeAxisLocation(), orientation); | |
| 172 | ||
| 173 | double transX0 = domainAxis.valueToJava2D(this.x0, dataArea, | |
| 174 | domainEdge); | |
| 175 | double transY0 = rangeAxis.valueToJava2D(this.y0, dataArea, rangeEdge); | |
| 176 | double transX1 = domainAxis.valueToJava2D(this.x1, dataArea, | |
| 177 | domainEdge); | |
| 178 | double transY1 = rangeAxis.valueToJava2D(this.y1, dataArea, rangeEdge); | |
| 179 | ||
| 180 | Rectangle2D box = null; | |
| 181 |
1
1. draw : negated conditional → SURVIVED |
if (orientation == PlotOrientation.HORIZONTAL) { |
| 182 |
2
1. draw : Replaced double subtraction with addition → NO_COVERAGE 2. draw : Replaced double subtraction with addition → NO_COVERAGE |
box = new Rectangle2D.Double(transY0, transX1, transY1 - transY0, |
| 183 | transX0 - transX1); | |
| 184 | } | |
| 185 |
1
1. draw : negated conditional → KILLED |
else if (orientation == PlotOrientation.VERTICAL) { |
| 186 |
2
1. draw : Replaced double subtraction with addition → SURVIVED 2. draw : Replaced double subtraction with addition → SURVIVED |
box = new Rectangle2D.Double(transX0, transY1, transX1 - transX0, |
| 187 | transY0 - transY1); | |
| 188 | } | |
| 189 | ||
| 190 |
1
1. draw : negated conditional → SURVIVED |
if (this.fillPaint != null) { |
| 191 |
1
1. draw : removed call to java/awt/Graphics2D::setPaint → SURVIVED |
g2.setPaint(this.fillPaint); |
| 192 |
1
1. draw : removed call to java/awt/Graphics2D::fill → SURVIVED |
g2.fill(box); |
| 193 | } | |
| 194 | ||
| 195 |
2
1. draw : negated conditional → SURVIVED 2. draw : negated conditional → SURVIVED |
if (this.stroke != null && this.outlinePaint != null) { |
| 196 |
1
1. draw : removed call to java/awt/Graphics2D::setPaint → SURVIVED |
g2.setPaint(this.outlinePaint); |
| 197 |
1
1. draw : removed call to java/awt/Graphics2D::setStroke → SURVIVED |
g2.setStroke(this.stroke); |
| 198 |
1
1. draw : removed call to java/awt/Graphics2D::draw → SURVIVED |
g2.draw(box); |
| 199 | } | |
| 200 |
1
1. draw : removed call to org/jfree/chart/annotations/XYBoxAnnotation::addEntity → SURVIVED |
addEntity(info, box, rendererIndex, getToolTipText(), getURL()); |
| 201 | ||
| 202 | } | |
| 203 | ||
| 204 | /** | |
| 205 | * Tests this annotation for equality with an arbitrary object. | |
| 206 | * | |
| 207 | * @param obj the object (null permitted). | |
| 208 | * | |
| 209 | * @return A boolean. | |
| 210 | */ | |
| 211 | public boolean equals(Object obj) { | |
| 212 |
1
1. equals : negated conditional → KILLED |
if (obj == this) { |
| 213 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → NO_COVERAGE |
return true; |
| 214 | } | |
| 215 | // now try to reject equality | |
| 216 |
1
1. equals : negated conditional → KILLED |
if (!super.equals(obj)) { |
| 217 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → NO_COVERAGE |
return false; |
| 218 | } | |
| 219 |
1
1. equals : negated conditional → KILLED |
if (!(obj instanceof XYBoxAnnotation)) { |
| 220 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → NO_COVERAGE |
return false; |
| 221 | } | |
| 222 | XYBoxAnnotation that = (XYBoxAnnotation) obj; | |
| 223 |
1
1. equals : negated conditional → KILLED |
if (!(this.x0 == that.x0)) { |
| 224 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED |
return false; |
| 225 | } | |
| 226 |
1
1. equals : negated conditional → KILLED |
if (!(this.y0 == that.y0)) { |
| 227 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → NO_COVERAGE |
return false; |
| 228 | } | |
| 229 |
1
1. equals : negated conditional → KILLED |
if (!(this.x1 == that.x1)) { |
| 230 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → NO_COVERAGE |
return false; |
| 231 | } | |
| 232 |
1
1. equals : negated conditional → KILLED |
if (!(this.y1 == that.y1)) { |
| 233 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → NO_COVERAGE |
return false; |
| 234 | } | |
| 235 |
1
1. equals : negated conditional → KILLED |
if (!ObjectUtilities.equal(this.stroke, that.stroke)) { |
| 236 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → NO_COVERAGE |
return false; |
| 237 | } | |
| 238 |
1
1. equals : negated conditional → KILLED |
if (!PaintUtilities.equal(this.outlinePaint, that.outlinePaint)) { |
| 239 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED |
return false; |
| 240 | } | |
| 241 |
1
1. equals : negated conditional → KILLED |
if (!PaintUtilities.equal(this.fillPaint, that.fillPaint)) { |
| 242 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED |
return false; |
| 243 | } | |
| 244 | // seem to be the same | |
| 245 |
1
1. equals : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED |
return true; |
| 246 | } | |
| 247 | ||
| 248 | /** | |
| 249 | * Returns a hash code. | |
| 250 | * | |
| 251 | * @return A hash code. | |
| 252 | */ | |
| 253 | public int hashCode() { | |
| 254 | int result; | |
| 255 | long temp; | |
| 256 | temp = Double.doubleToLongBits(this.x0); | |
| 257 |
2
1. hashCode : Replaced Unsigned Shift Right with Shift Left → SURVIVED 2. hashCode : Replaced XOR with AND → SURVIVED |
result = (int) (temp ^ (temp >>> 32)); |
| 258 | temp = Double.doubleToLongBits(this.x1); | |
| 259 |
4
1. hashCode : Replaced integer multiplication with division → SURVIVED 2. hashCode : Replaced Unsigned Shift Right with Shift Left → SURVIVED 3. hashCode : Replaced XOR with AND → SURVIVED 4. hashCode : Replaced integer addition with subtraction → SURVIVED |
result = 29 * result + (int) (temp ^ (temp >>> 32)); |
| 260 | temp = Double.doubleToLongBits(this.y0); | |
| 261 |
4
1. hashCode : Replaced integer multiplication with division → SURVIVED 2. hashCode : Replaced Unsigned Shift Right with Shift Left → SURVIVED 3. hashCode : Replaced XOR with AND → SURVIVED 4. hashCode : Replaced integer addition with subtraction → SURVIVED |
result = 29 * result + (int) (temp ^ (temp >>> 32)); |
| 262 | temp = Double.doubleToLongBits(this.y1); | |
| 263 |
4
1. hashCode : Replaced integer multiplication with division → SURVIVED 2. hashCode : Replaced Unsigned Shift Right with Shift Left → SURVIVED 3. hashCode : Replaced XOR with AND → SURVIVED 4. hashCode : Replaced integer addition with subtraction → SURVIVED |
result = 29 * result + (int) (temp ^ (temp >>> 32)); |
| 264 |
1
1. hashCode : replaced return of integer sized value with (x == 0 ? 1 : 0) → SURVIVED |
return result; |
| 265 | } | |
| 266 | ||
| 267 | /** | |
| 268 | * Returns a clone. | |
| 269 | * | |
| 270 | * @return A clone. | |
| 271 | * | |
| 272 | * @throws CloneNotSupportedException not thrown by this class, but may be | |
| 273 | * by subclasses. | |
| 274 | */ | |
| 275 | public Object clone() throws CloneNotSupportedException { | |
| 276 |
1
1. clone : mutated return of Object value for org/jfree/chart/annotations/XYBoxAnnotation::clone to ( if (x != null) null else throw new RuntimeException ) → KILLED |
return super.clone(); |
| 277 | } | |
| 278 | ||
| 279 | /** | |
| 280 | * Provides serialization support. | |
| 281 | * | |
| 282 | * @param stream the output stream (null not permitted). | |
| 283 | * | |
| 284 | * @throws IOException if there is an I/O error. | |
| 285 | */ | |
| 286 | private void writeObject(ObjectOutputStream stream) throws IOException { | |
| 287 |
1
1. writeObject : removed call to java/io/ObjectOutputStream::defaultWriteObject → KILLED |
stream.defaultWriteObject(); |
| 288 |
1
1. writeObject : removed call to org/jfree/chart/util/SerialUtilities::writeStroke → KILLED |
SerialUtilities.writeStroke(this.stroke, stream); |
| 289 |
1
1. writeObject : removed call to org/jfree/chart/util/SerialUtilities::writePaint → KILLED |
SerialUtilities.writePaint(this.outlinePaint, stream); |
| 290 |
1
1. writeObject : removed call to org/jfree/chart/util/SerialUtilities::writePaint → KILLED |
SerialUtilities.writePaint(this.fillPaint, stream); |
| 291 | } | |
| 292 | ||
| 293 | /** | |
| 294 | * Provides serialization support. | |
| 295 | * | |
| 296 | * @param stream the input stream (null not permitted). | |
| 297 | * | |
| 298 | * @throws IOException if there is an I/O error. | |
| 299 | * @throws ClassNotFoundException if there is a classpath problem. | |
| 300 | */ | |
| 301 | private void readObject(ObjectInputStream stream) | |
| 302 | throws IOException, ClassNotFoundException { | |
| 303 | ||
| 304 |
1
1. readObject : removed call to java/io/ObjectInputStream::defaultReadObject → KILLED |
stream.defaultReadObject(); |
| 305 | this.stroke = SerialUtilities.readStroke(stream); | |
| 306 | this.outlinePaint = SerialUtilities.readPaint(stream); | |
| 307 | this.fillPaint = SerialUtilities.readPaint(stream); | |
| 308 | } | |
| 309 | ||
| 310 | } | |
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A word cloud
(also called tag cloud or weighted list) is a visual representation of text data. Words are usually single words, and the importance of each is shown with font size or color.
Here is an example showing the most frequent words used by Nekfeu, a famous french raper, in a few of his songs. You can read more about this story here.
# Libraries
library(tidyverse)
library(hrbrthemes)
library(tm)
library(proustr)
# Load dataset from github
data <- read.table("https://raw.githubusercontent.com/holtzy/data_to_viz/master/Example_dataset/14_SeveralIndepLists.csv", header=TRUE)
to_remove <- c("_|[0-9]|\\.|function|^id|script|var|div|null|typeof|opts|if|^r$|undefined|false|loaded|true|settimeout|eval|else|artist")
data <- data %>% filter(!grepl(to_remove, word)) %>% filter(!word %in% stopwords('fr')) %>% filter(!word %in% proust_stopwords()$word)
# The wordcloud 2 library is the best option for wordcloud in R
library(wordcloud2)
# prepare a list of word (50 most frequent)
mywords <- data %>%
filter(artist=="nekfeu") %>%
dplyr::select(word) %>%
group_by(word) %>%
summarize(freq=n()) %>%
arrange(freq) %>%
tail(30)
# Make the plot
wordcloud2(mywords, minRotation = -pi/2, maxRotation = -pi/2,
backgroundColor = "white", color="#69b3a2")
Wordcloud is useful for quickly perceiving the most prominent terms and for locating a term alphabetically to determine its relative prominence. It is widely used in media and well understood by the public.
However, it is a highly criticized way to convey information due to its lack of accuracy. This is due to 2 main reasons:
Area is a poor metaphor of a numeric value that is hardly perceived by human eye. Thus readers struggle to translate word size to an accurate frequency. (read more)
Longer words appear bigger by construction, since they are composed by more letters. It creates a bias that makes wordcloud even less accurate.
A good workaround is to use barplot or lollipop plot instead. Here is an example using the same data as the previous chart:
# prepare a list of word (30 most frequent)
data %>%
filter(artist=="nekfeu") %>%
dplyr::select(word) %>%
group_by(word) %>%
summarize(freq=n()) %>%
arrange(freq) %>%
tail(30) %>%
mutate(word=factor(word, word)) %>%
ggplot( aes(x=word, y=freq) ) +
geom_segment( aes(x=word ,xend=word, y=0, yend=freq), color="grey") +
geom_point(size=3, color="#69b3a2") +
coord_flip() +
theme_ipsum() +
theme(
panel.grid.minor.y = element_blank(),
panel.grid.major.y = element_blank(),
legend.position="none"
) +
xlab("")
Many variations exist for wordclouds. Shapes are often changed, sometimes using the shape of an object related to the topic. It is also possible to play with text orientation, font, size, colors etc.
mywords <- data %>%
filter(artist=="nekfeu") %>%
dplyr::select(word) %>%
group_by(word) %>%
summarize(freq=n()) %>%
arrange(desc(freq)) %>%
head(200)
# Make the plot
library(webshot)
#webshot::install_phantomjs()
# Make the graph
my_graph=wordcloud2(mywords, size=0.6, shape = 'star', backgroundColor = "white", color="#69b3a2")
library("htmlwidgets")
saveWidget(my_graph,"tmp.html", selfcontained = F)
# and in png
webshot("tmp.html","IMG/fig_1.png", delay =5, vwidth = 700, vheight=700)
The R and Python graph galleries are 2 websites providing hundreds of chart example, always providing the reproducible code. Click the button below to see how to build the chart you need with your favorite programing language.
R graph gallery Python gallery
Any thoughts on this? Found any mistake? Disagree? Please drop me a word on twitter or in the comment section below:
A work by Yan Holtz for data-to-viz.com


programming as an expressive medium ( ͡ᵔ ͜ʖ ͡ᵔ ) !
GDX 2020
Introductions
name and a beloved present given or received
(e.g. a birthday card, a dinner made, etc.)
My relationship/approach to programming
What we're doing tonight:
making a card/poem for your child
inspired by:
For your card, you can combine:
- drawing
- macrophotograph
- picture from online
- let me show you some HTML/CSS basics...
- the template: here to see and here to download bit.ly/gdx-template


Components $\mathbf{e}_1$ and $\mathbf{e}_2$ are parallel transported at speed $\mathbf{\kappa b}$
$\mathbf{e}_1$ and $\mathbf{e}_2$ are relatively parallel normal fields (*)
(*) turns only whathever amount is necessary for it to remain normal, so it is as close to being parallel as possible without losing normality [Bishop 1975]
Reference Frame
Free of geometric torsion : $\tau = 0$
Defined everywhere for a regular curve ($\|\mathbf{x}'\| > 0$)
Evolves at angular velocity $\mathbf{\kappa b}$
Is simply translated when $\mathbf{\kappa b} = \mathbf{0}$
Is invariant within an intial condition
Any other adapted frame is obtained by a rotation $\theta(s)$ around $\mathbf{t}(s)$
Curve-Angle Representation
3 translational DOFs : $\mathbf{x}$
1 rotational DOF : $\theta$
[Langer & Singer 1996] > [Bergou et al. 2008]
Curve-Angle Representation
$\mathbf{x}\,$ and $\theta$ are independant DOFs
$\kappa_1 = \mathbf{\kappa b} \cdot \mathbf{d}_1$
$\kappa_2 = \mathbf{\kappa b} \cdot \mathbf{d}_2$
$\tau = \theta'$
Elastic Energy
Overbars refer to the stress-free configuration
Coupling between bending and torsion
Special case : naturally straight and isotropic rod
Internal Forces and Moments
Differentiating bending and twisting elastic energies relatively to the DoFs
Leads to quasi-static out-of-balance internal forces and moments
Quasistatic assumption [Bergou et al. 2008]
Variation of Bishop frame (holonomy)
Internal Forces and Moments
Curvatures > bending moment
Twist > twisting moment
Variation of moment > shear force
Inextensibility > axial force
Dynamics
Symplectic Euler integrator (*) + Newton : [Bergou et al. 2008]
Dynamic relaxation : [Lefevre et al. 2017]
(*) Also known as dynamic relaxation, Verlet integration or the semi-implicit Euler, symplectic Euler, semi-explicit Euler, Euler–Cromer or Newton–Størmer–Verlet (NSV) method. [Williams 2011]


Tip: Nokia 9.1 PureView dummy images (claimed) with case emerge
by NayanNokia 9.1 PureView, the successor to Nokia 9 PureView may be the next big smartphone offering from HMD. Now a known tipster has sent us some images of what looks like the Nokia 9.1 PureView dummy wearing a case.
The images reveal a wider smartphone than Nokia 9 PureView but with the similar Penta-camera module. Design wise also the Nokia 9.1 looks a bit different from Nokia 9 PureView if one notices the back and side profiles.
While we have earlier reported about HMD targetting Q4 2019 for Nokia 9.1 PureView launch, HMD has moved very slowly in last few months and hence the launch in Q4 2019 seems a bit difficult now. But we hope that HMD surprises us this time.
We have reported some exclusive details about Nokia 9.1 PureView like even better “Light camera” and you can read it by clicking here. It will be powered by Snapdragon 855 and will run Android 10 out of the box.
You can check out leaked specifications, features, images and other detailss related to Nokia 9.1 PureView on this page. Read our complete Nokia 9.1 PureView coverage by clicking here.


Do Not Panic. Take Necessary Precautions. Stay Indoors. Wash Your Hands Regularly. Stay Safe. Jai Hind.


INEC Presents Certificate of Return To Bayelsa Governor-elect David Lyon
by Olugbenga IgeThe Independent National Electoral Commission (INEC) on Thursday issued a Certificate of Return to the Bayelsa State Governor-elect, David Lyon.
Concise News had reported that the commission had declared Lyon as the winner of the Bayelsa state governorship election.
The returning officer, Prof. Faraday Orumwese, had announced that the APC candidate polled 352,552 votes to defeat Duoye Diri of the Peoples Democratic Party (PDP) who polled 143, 172 votes.
However, in his welcome address, the State Resident Electoral Commissioner (REC), Monday Udoh, congratulated Lyon for winning the election and presented him with the certificate at the commission’s headquarters in Yenogoa, Bayelsa state capital.
Speaking further, Udoh said the election conducted by INEC was adjudged to be free, fair and credible by election observers and voters.
Udoh said: “The electoral process which started in May 2019 came with a lot of apprehensions. It followed fears of violence hinged on the outcome of previous elections in the state that were marred by violence and killings.
“However, through various engagements with stakeholders, civil society groups, alternative dispute mechanism and security agencies, the election was free, fair and credible.”
Udoh also presented a Certificate of Return to a member of the Bayelsa State House of Assembly representing Brass Constituency 1, Charles Daniel, whose supplementary election was concluded on November 16.


Drag and drop Neurons to combine their activations!
These neurons are activation visualizations from the Facenet network. Neuron combinations represent images that maximally visualize two separate filters within the convolutional layer. This demo is a human interpratable visualization of how these neurons interact to build more complex concepts in facial image identification


Creates a tensor with all elements set to zero.
tf.compat.v1.zeros_like( tensor, dtype=None, name=None, optimize=True )
Given a single tensor (tensor
), this operation returns a tensor of the
same type and shape as tensor
with all elements set to zero. Optionally,
you can use dtype
to specify a new type for the returned tensor.
tensor = tf.constant([[1, 2, 3], [4, 5, 6]]) tf.zeros_like(tensor) # [[0, 0, 0], [0, 0, 0]]
tensor
: A Tensor
.dtype
: A type for the returned Tensor
. Must be float16
, float32
,
float64
, int8
, uint8
, int16
, uint16
, int32
, int64
,
complex64
, complex128
, bool
or string
.name
: A name for the operation (optional).optimize
: if true, attempt to statically determine the shape of 'tensor' and
encode it as a constant.A Tensor
with all elements set to zero.


Concept
Music Maker's mission:
Teaches kids about the basic principles behind music and sound. Kids can play a note (or sing a note) into the microphone, then LEDs change color accordingly.
start using live input
--
Hz
--
--
cents ♭
cents ♯
this is a test
Tutorial on Hardware
What You will Need!
Wiring Schematic
Code
Download:
/*Arduino speaker song tutorial * This program will play the theme song of the Malayalam movie * 'Ennu Ninte Moideen'. The song is 'Mukkathe Penne'. * The song is played on the speaker connected to pin 3 and GND. * * Created 26 Oct 2015 * by Akshay James * Video at https://www.youtube.com/watch?v=LgtcUxe8fmA */ #include"pitches.h" // notes in the song 'Mukkathe Penne' int melody[] = { NOTE_D4, NOTE_G4, NOTE_FS4, NOTE_A4, NOTE_G4, NOTE_C5, NOTE_AS4, NOTE_A4, NOTE_FS4, NOTE_G4, NOTE_A4, NOTE_FS4, NOTE_DS4, NOTE_D4, NOTE_C4, NOTE_D4,0, NOTE_D4, NOTE_G4, NOTE_FS4, NOTE_A4, NOTE_G4, NOTE_C5, NOTE_D5, NOTE_C5, NOTE_AS4, NOTE_C5, NOTE_AS4, NOTE_A4, //29 //8 NOTE_FS4, NOTE_G4, NOTE_A4, NOTE_FS4, NOTE_DS4, NOTE_D4, NOTE_C4, NOTE_D4,0, NOTE_D4, NOTE_FS4, NOTE_G4, NOTE_A4, NOTE_DS5, NOTE_D5, NOTE_C5, NOTE_AS4, NOTE_A4, NOTE_C5, NOTE_C4, NOTE_D4, NOTE_DS4, NOTE_FS4, NOTE_D5, NOTE_C5, NOTE_AS4, NOTE_A4, NOTE_C5, NOTE_AS4, //58 NOTE_D4, NOTE_FS4, NOTE_G4, NOTE_A4, NOTE_DS5, NOTE_D5, NOTE_C5, NOTE_D5, NOTE_C5, NOTE_AS4, NOTE_C5, NOTE_AS4, NOTE_A4, NOTE_C5, NOTE_G4, NOTE_A4, 0, NOTE_AS4, NOTE_A4, 0, NOTE_G4, NOTE_G4, NOTE_A4, NOTE_G4, NOTE_FS4, 0, NOTE_C4, NOTE_D4, NOTE_G4, NOTE_FS4, NOTE_DS4, NOTE_C4, NOTE_D4, 0, NOTE_C4, NOTE_D4, NOTE_G4, NOTE_FS4, NOTE_DS4, NOTE_C4, NOTE_D4, END };


Create the best active monitoring platform.
Open Source powered automation - made fast, reliable and easy-to-use.
About Checkly
Checkly was founded in Berlin to enable developers to monitor their critical APIs and UIs easily.
Synthetic monitoring and end-to-end testing technologies have been sleepy during the last decade; in contrast, the DevOps-space, CI/CD-workflows, and Developer-tools evolved. Modern automation needs to become faster, easy to implement, open, integrated, and reliable. That's what we are working on every day.
We believe in a bright future where apps are built and shipped more reliably from dev to production and further. Our vision is to create the best active monitoring platform for developers using modern stacks. A platform with a world-class developer experience!
Open Source
Checkly's foundation is Open Source. We are not only using but building and supporting Open Source.
Leadership team
Tim Nolet
CTO
Hannes Lenke
CEO
Timo Euteneuer
CCO
Our investors
We are excited to work with some of the best investors in the world. You might know some of their companies.
- Andrei Brasoveanu
- Accel
- Guillermo Rauch
- CEO @ Vercel
- Robin Vasan
- Founder @ Mango Capital
- Christian Henschel
- CEO @ Adjust
- Paul Müller
- CTO @ Adjust
- Philip Moehring
- Tiny VC
- Ott Kaukver
- ex-CTO Twilio
- Mirko Novakovic
- CEO @ Instana
- Charles Ramsey
- ex-CEO Saucelabs
Contact
<EMAIL_ADDRESS>Checkly Inc. has registered offices at:
🇺🇸 United States
One Boston Place, Suite 2600Boston, MA 02108
🇩🇪 Germany
Kopernikusstraße 3510243 Berlin
🇳🇱 Netherlands
The J.P. Coenstraat 24 BIS3531 ET Utrecht


Functions
entry(t) → {value}
returns the value of a given binary tree
Parameters:
| Name | Type | Description |
|---|---|---|
t |
binary_tree | given binary tree |
Returns:
value of
t
- Type
- value
is_empty_tree(t) → {boolean}
checks whether given binary tree
t
is empty
Parameters:
| Name | Type | Description |
|---|---|---|
t |
binary_tree | given binary tree |
Returns:
- Type
- boolean
is_tree(x) → {boolean}
checks whether a given value is a valid binary tree, according to the abstraction
Parameters:
| Name | Type | Description |
|---|---|---|
x |
value | given value |
Returns:
- Type
- boolean
left_branch(t) → {binary_tree}
returns the left branch of a given binary tree
Parameters:
| Name | Type | Description |
|---|---|---|
t |
binary_tree | given binary tree |
Returns:
left branch of
t
- Type
- binary_tree
make_empty_tree() → {binarytree}
returns an empty binary tree, represented by the empty list null
Returns:
empty binary tree
- Type
- binarytree
make_tree(val, left, right) → {boolean}
returns a binary tree node composed of the
three components passed in
Parameters:
| Name | Type | Description |
|---|---|---|
val |
value | value of the node |
left |
binary_tree | left subtree |
right |
binary_tree | right subtree |
Returns:
- Type
- boolean
right_branch(t) → {binary_tree}
returns the right branch of a given binary tree
Parameters:
| Name | Type | Description |
|---|---|---|
t |
binary_tree | given binary tree |
Returns:
right branch of
t
- Type
- binary_tree


try
statements which catch
java.lang.Error
or any subclass and which do not rethrow the error.
Statements which catch java.lang.ThreadDeath
are not
reported by this inspection.
Example:
try { executeTests(request); } catch (OutOfMemoryError ex) { // warning: Error 'ex' not rethrown return false; }


VITask Terms and Policies
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You are advised to review this Privacy Policy periodically for any changes. Changes to this Privacy Policy are effective when they are posted on this page.
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By email: apratimshukla6@gmail.com


Currently assumes W-4 from 2020 or later, semimonthly payroll period, checkbox is checked, married filing jointly.


Born and raised in central New Jersey (yes, that exists!), I'm an east-coaster at heart but a west coast transplant for the past several years. I like to learn about new innovations in science and technology and chat about housing (we need more), transportation (I don't like cars), and news. I also love exploring new places and food! 😋
I work in the tech industry as a software engineer. Being a software engineer is a pretty big privilege, so it's important to stay grounded and self-motivated. I like to help people, and I try to do that through the tremendous opportunity that technology offers.
In other parts of my life, I wrote legislative referrals to the Berkeley City Council. I've also conducted research on simultaneous localization and mapping (SLAM) for autonomous vehicles. I've enjoyed being a part of student newsrooms as the Online Manager for the Daily Californian and a writer/editor for my high school newspaper, The Sting. If you go further back, I even authored a research paper on biodegradable, flame-retardant polymer blends (try saying that five times fast). Take a look at my LinkedIn for the full picture!


Cong releases manifest for Jharkhand Polls
by PTIThe Congress on Sunday released its manifesto for the upcoming Jharkhand assembly polls, promising a one-time farm loan waiver of up to Rs 2 lakh and stringent law to deal with cases of lynching in the state.
Besides the loan waiver assurance, the manifesto -- released by AICC in-charge RPN Singh here -- pledged to free farmers from the clutches of money lenders and make the process of institutional loans easier.
"An effective 'Kisan Fasal Bima' will be introduced and adequate compensation to agriculture produce affected by pests and natural calamities will be provided, and modern tools and fertiliser will be given to farmers on suitable prices," it said.
The Congress has stitched an alliance with the JMM and the RJD to contest the five-phase assembly elections between November 30 and December 20 to the 81-member House.


IMAGINATION EXPLAINED
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- Jean-Paul Sartre
-words words words words.
- 3h
-words words words words.
- 3h
-words words words words.
- Jean-Paul Sartre
-words words words words.
- Jean-Paul Sartre


QScintilla is a port to Qt of Scintilla. As well as features found in standard text editing components, it includes features especially useful when editing and debugging source code: language syntax styling, error indicators, code completion, call tips, code folding, margins can contain markers like those used in debuggers to indicate breakpoints and the current line, recordable macros, multiple views and, of course, printing.
This package is known to build and work properly using an LFS-7.9 platform.
Download (HTTP): http://downloads.sourceforge.net/pyqt/QScintilla-gpl-2.9.1.tar.gz
Download MD5 sum: 38e6248cb970adf6d05aea7d94f1288e
Download size: 2.4 MB
Estimated disk space required: 38 MB (with documentation)
Estimated build time: 1 SBU (with documentation)
Required patch (if building with Qt5): http://www.linuxfromscratch.org/patches/blfs/7.9/QScintilla-gpl-2.9.1-fixes-1.patch
chrpath-0.16 and Qt-5.5.1 or Qt-4.8.7
PyQt (for Python Qt bindings)
User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/qscintilla
If building with Qt5, run the following commnd:
patch -Np1 -i ../QScintilla-gpl-2.9.1-fixes-1.patch
If Qt4 and Qt5 are installed, choose which one you prefer, by running source setqt4 or source setqt5, respectivelly.
The instructions in this page are just for the QScintilla application. Code is included in the tarball for QScintilla Qt Designer plugin and Python bindings.
Install QScintilla by running the following commands:
cd Qt4Qt5 && qmake qscintilla.pro && make
This package does not come with a test suite.
Now, as the root
user:
make install
If you wish to install the documentation, issue, as the
root
user:
install -v -m755 -d $QT5DIR/share/doc/QScintilla-2.9.1/html && install -v -m644 ../doc/html-Qt4Qt5/* \ $QT5DIR/share/doc/QScintilla-2.9.1/html
if building with Qt5. For
Qt4 build, replace QT5DIR
with QT4DIR
.
Last updated on 2016-03-06 15:31:27 -0800


Books
As well as writing a daily column, magazines and scripts for television, Keith Dunstan wrote over 25 books.
2017, Allen and Unwin -
link
2005
Contributor, 2005
2004, Australian Scholarly Publishing.
A collection of Keiths articles, originally published in the Bulletin Magazine. Edited by David Dunstan.
Links to articles and an introduction on chapters is here.
Commissioned by 'The Age' newspaper to celebrate the bicentennial in 1998, Keith wrote an historical account of Australia's history for each day of the year. They were compiled to form this book. Published in 1989
You can read the introduction and list of article titles here
You can read the introduction and list of article titles here
1999
1994
1991
Viking Books, 1990
Keith's first book of memoirs, published in 1990 cover his career in writing, reflections on Melbourne, working abroad and his family life.
1980
1980
1979
The story of 'Georges', the luxury department store in Collins street, Melbourne.
The story of 'Georges', the luxury department store in Collins street, Melbourne.
1972
1970
1968
1966, published by Cassell Australia
Keith's second book, published in 1966, reflects on the trails of taking on a daily column in the Sun News Pictorial and his efforts in keeping it upright.
Read the Introduction and available chapters here.
Keith's second book, published in 1966, reflects on the trails of taking on a daily column in the Sun News Pictorial and his efforts in keeping it upright.
Read the Introduction and available chapters here.
1962
Keith's first book, published in 1962 about the origins and history of the Melbourne Cricket Ground.
Keith's first book, published in 1962 about the origins and history of the Melbourne Cricket Ground.


exitPoints
meetingRooms
breakoutRooms
quietRooms
desktops1
desktops2
desktops3
desktops4
desktops5
desktops6
desktops7
desktops8


Need a new movie recommendation? We’ve got you covered! Just let us know what your favorites are and we’ll do the rest.
Just finished an entire television series in one sitting and need something new!? No worries. Just let us know what you like to watch, and we’ll provide the next installment for your couch surfing needs.
Finally done with “War and Peace” and not into “Moby Dick?” We’ve got you covered on your next adventure!


Up Next
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About Us
Jessica
Jessica comes from a background in science and has decided it is time for a career change! She learned about Code Fellows a while back and was excited about the program so she joined soon after. One day she hopes to move into a developer position. Other than learning to code, she loves her cats and loves to travel.
Jonathan
Jonathan is a recent transplant to Seattle from Alabama. He’s worked as a software Business Analyst for the past 10 years. He’s a published author with several short pieces and two novels under his belt. He spends his days working on the next book, playing with his Boston Terriers and chatting with the voices in his head.


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Since different languages have different alphabets, GEOS has to allow for characters not in the standard English character set.
You will find that character values are stored via the
Chars
enumerated type. Thus, many standard procedures have been localized. Most of these functions have to do with the lexical value of characters, their place in a lexical, or alphabetic, ordering. These lexical values take the place of ASCII standard character values that you may be used to.


nips nips2009 nips2009-161 nips2009-161-reference knowledge-graph by maker-knowledge-mining
Source: pdf
Author: Michael Brückner, Tobias Scheffer
Abstract: The standard assumption of identically distributed training and test data is violated when an adversary can exercise some control over the generation of the test data. In a prediction game, a learner produces a predictive model while an adversary may alter the distribution of input data. We study single-shot prediction games in which the cost functions of learner and adversary are not necessarily antagonistic. We identify conditions under which the prediction game has a unique Nash equilibrium, and derive algorithms that will ﬁnd the equilibrial prediction models. In a case study, we explore properties of Nash-equilibrial prediction models for email spam ﬁltering empirically. 1
[1] Gert R. G. Lanckriet, Laurent El Ghaoui, Chiranjib Bhattacharyya, and Michael I. Jordan. A robust minimax approach to classiﬁcation. Journal of Machine Learning Research, 3:555–582, 2002.
[2] Laurent El Ghaoui, Gert R. G. Lanckriet, and Georges Natsoulis. Robust classiﬁcation with interval data. Technical Report UCB/CSD-03-1279, EECS Department, University of California, Berkeley, 2003.
[3] Amir Globerson and Sam T. Roweis. Nightmare at test time: robust learning by feature deletion. In Proceedings of the International Conference on Machine Learning, 2006.
[4] Choon Hui Teo, Amir Globerson, Sam T. Roweis, and Alex J. Smola. Convex learning with invariances. In Advances in Neural Information Processing Systems, 2008.
[5] Amir Globerson, Choon Hui Teo, Alex J. Smola, and Sam T. Roweis. Dataset Shift in Machine Learning, chapter An adversarial view of covariate shift and a minimax approach, pages 179– 198. MIT Press, 2009.
[6] Tamer Basar and Geert J. Olsder. Dynamic Noncooperative Game Theory. Society for Industrial and Applied Mathematics, 1999.
[7] J. B. Rosen. Existence and uniqueness of equilibrium points for concave n-person games. Econometrica, 33(3):520–534, 1965.
[8] Anna von Heusinger and Christian Kanzow. Relaxation methods for generalized Nash equilibrium problems with inexact line search. Journal of Optimization Theory and Applications, 143(1):159–183, 2009.
[9] John M. Danskin. The theory of max-min, with applications. SIAM Journal on Applied Mathematics, 14(4):641–664, 1966. 9


This simple demo shows how to build an autocomplete solution using linked data extracted from dbpedia by LinkedData.Center.
View project in GitHub repository.


1) Select a support (Only Twitter for now). 2) Select how much you want to do
For Twitter, you can use the same macro to follow and defollow Follow limit for Twitter : 1 000 per day
Follow limit for Tumblr : 200 per day


Nile View - Zamalek
Boasting on-site dining and free WiFi, Nile View - Zamalek is set in Cairo, 500 m from New Cairo Opera and 600 m from El-Ahly Sporting Club. Well located in the Gezira district, the property is located a 14-minute walk from Sudan Embassy and 1.3 km from Nile Hilton Shopping Centre. The property features river views, an outdoor pool and a 24-hour front desk.
All rooms at the hotel are equipped with a seating area and a flat-screen TV with satellite channels. Rooms have a private bathroom with free toiletries. All units at Nile View - Zamalek feature air conditioning and a desk.
The accommodation offers an American or continental breakfast.
Nile View - Zamalek offers a children's playground.
Ag Museum is 1.4 km from the hotel, while Cairo Museum is 1.4 km from the property. Cairo International Airport is 19 km away.
This property also has one of the best-rated locations in Cairo! Guests are happier about it compared to other properties in the area.
Couples particularly like the location — they rated it 8.3 for a two-person trip.
This property is also rated for the best value in Cairo! Guests are getting more for their money when compared to other properties in this city.


Speak to the user as “you”
Speak directly to users as “you,” not “me.” Don’t put words in the users’ mouths, with phrases that use “I” or “my.”
Exceptions include:
- Some legal opt-ins: “I agree to follow the UX Writing Guidelines.”
- When referring to some BMJ products, such as "My account"
Don’t refer to “we”
Focus on the user and what they can do with your app, rather than what you or your app is doing for the user.
 Here, the use of “we” is appropriate and more personable.
Be concise
The best UI text is written in small, scannable segments to assist in navigation and discovery.
Keep your sentences and phrases short, with as few concepts as possible.
Write in the present
Use the present tense to describe product behavior. Avoid using future tense to describe the way a product always acts.
When you need to write in the past or future, use simple verb forms.
Write simply and directly
Use simple, direct language that is easy for users to understand.
Use simple words that everyone knows
When choosing among synonyms, pick the simplest word.
Avoid terms that only industry insiders know, and don't rely on the names invented for UI features.
Generic terms like "slider" and "menu" are fine, but direct users to the labels on UI elements, not the kind of element (such as menu or button).
Omit unnecessary phrases
You can skip many common introductory phrases and get right to the point.
Use consistent verbs across the arc of an action
The framing concept of an action is typically a verb. Pick one and use it consistently throughout the whole process of an action.
Lead with the goal, not the method
If a sentence includes an action for the user to take and instructions for achieving it, start the sentence with that action.
Reveal detail only as needed
Don’t burden the user with every detail and caution in the first interaction. Reveal increasing detail about features as the user explores them and needs the information.
Never say “never”
Avoid “never” and other absolutes.
Text for buttons and related elements
Buttons appear in dialogs and as blue or underlined text.
Button |
Usage |
[ Action ] |
See above guideline about using consistent verbs. |
Back |
Allows multi-step processes |
Cancel |
Cancels an action |
Dismiss |
Causes a message or dialog to disappear without any consequences |
Done |
Confirms the completion of a multi-step process |
Got it |
Causes a message or dialog to disappear without any consequences (similar to OK) |
Learn more |
Takes the user to additional content |
Next |
Takes the user to the next step of a multi-step process |
No thanks |
Allows a user to decline |
Not now |
Don’t use this abused phrase except in rare cases where the call to action in the dialog is essential to the functionality of the product, for legal reasons, or for another urgent reason. |
OK |
Allows the user to confirm an action that’s relevant to the task at hand |
Skip |
Gives the user a way to avoid an interruption and proceed with a task |


The Shared Link Provider will allow you to link a database over http. Any file with a direct download link will work here. To check if a link is a direct download, paste it into a browser address bar and verify that a download starts automatically.
In addition, this provider supports:


If you have a question that is not answered here, please Contact our HelpDesk
Our help button has changed!
Instead of the blue 'Help' button in the top right corner of each page, you will now find individual buttons next to most headings on the Location, Gene, Transcript and Variation pages.
Click on the button to get a pop-up help box containing a brief explanation of the page or image you're looking at.
The following browsers are fully supported, i.e. all site features including JavaScript and CSS styles should work properly:
We recommend Firefox for browsing Ensembl.
The following are not officially supported but should work with most or all of the site's current features:


Where Are All The Cool People?
August 3, 2015
Diversity in tech. Yeah, it's problem. Diversity is important not just for the sake of being able to say "We're diverse!" There are actual benefits that come from it. I'm gonna group the majority of reasons that we need more diversity into one: diversity makes teams better.
It's almost sad that you may have seen this statement or its equivalent as the attention grabber in article. In several articles, really. It could very well be titleized, it's so headline worthy. This is still being treated as news. Studies show that diversity in teams makes for more creative, more energetic, more productive team mates. How do solve for the lack of diversity? So glad you asked.
If you're working with or for companies that don't have a diversity policy, ask them why. Start a conversation (a friendly debate, even!) and make them wonder whether they're doing all they can to promote diversity.
Focus on company culture, not just hiring for diversity. Diversity isn't just a problem in the pipeline. Make yours a culture that promotes diversity and attracts all sorts of people, regardless of where they're from or what they look like.
Get everyone involved. Diversity isn't just a [insert minority group]'s problem.
Take another look at job postings and interview practices. Look for hidden biases that push away minorities.


Speech to text
Shabbir experiment with speech to text
Error!
A problem has been occurred while submitting your data.
Press mic button to record


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Level of confidence that token is an accurately-transcribed word
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Members tableStickyHeader Directive for sticky table headers and footers. Source: tableStickyHeader.js, line 27


Service Bindings¶
The element iocConfiguration/dependencyInjection/services lists service bindings that will be loaded into IoC container.
The element iocConfiguration/dependencyInjection/services has two types of child elements, service and selfBoundService.


Tap me to begin!
Now collecting coins!
$0.00
Quarter
Dime
Nickel
Penny
I'M DONE!
Good work! You just donated $0.00!
You earned 0 xp and 0 gems.
Restart


BTS Jungkook’s Mattel doll continues its domination on the best seller charts in Japan
by dose-nelJungkook's Mattel dolls and merchandise have had a successful run with them topping the charts in the biggest retailers of USA like Macy's and Target. His merch continues to be the most sought after as his mini doll tops Amazon Japan among all toys in the hobbies section. This is a further proof of Jungkook’s insane selling power and popularity.


{% extends "layout_bsa_popup.html" %} {% block page_title %} Single User View {% endblock %} {% block after_header %} {% endblock %} {% block content %} Personal details: Original Title Mr Forename Joe Surname Bloggs D.O.B. 20/11/1988 NHS No. 20111988 Email Back Close Address line 1 9 Hotspur street Address line 2 Townford Address line 3 Address line 4 Postcode NE1 0LD Telephone {% endblock %}
Mr
Joe
Bloggs
20/11/1988
20111988
Close
9 Hotspur street
Townford
NE1 0LD


The Growing Tree method is a fantastic method for creating mazes. Starting from a chosen cell, we put this cell in to a list and do the following:
Mark the current cell as visited
Create a list of neighbours the are not marked as visited and fall within map bounds
Select a random cell from the neighbours list and create a 'tunnel' by flagging the walls as open between the current cell and the neighbouring cell
Mark the selected cell as visited and add it to the list with our starting cell
Then, we either select the newest cell we added or a random cell from the list and repeat the process. The method is simple and produces very nice mazes without obvious directional bias.
If you cannot see the maze below, check you have Javascript enabled and that your browser supports the Canvas element.


Your game token is like a special password you use to log into games that support high scores and achievements. [ more info ]
Never share your account password. In fact, if a game asks for your password instead of your game token, please report it!
| Current Game Token |
Loading...
|
|---|


I want to see blossom ..... So I created it ...😜😜😝😝
This is also a test for your device
Click it for 9 time and check out your device processor speed in cooler way


Turkish and Russian presidents discuss northeast Syria
by ReutersISTANBUL: President Tayyip Erdogan and Russia’s Vladimir Putin discussed Turkey’s military offensive in Syria in a phone call on Saturday, Turkey’s presidency said.
Turkey launched its cross-border offensive one month ago, saying it aimed to drive Kurdish-led forces from the border region and create a “safe zone” to settle Syrian refugees.
It halted its advance under a deal with the United States which called for the withdrawal from the border of Kurdish YPG fighters – whom Ankara considers to be terrorists because of their links to Kurdish guerrillas waging an insurgency inside Turkey.
Erdogan later agreed a separate deal with Moscow, which also called for the YPG to withdraw at least 30 km (nearly 20 miles) from the border, but has since said that neither Washington nor Moscow has been able to deliver on the deals.
The Turkish statement on Saturday said Erdogan and Putin confirmed their commitment to the accord they struck at a meeting in the Black Sea resort of Sochi which also paved the way for joint Russian-Turkish military patrols inside Syria.
It said the two men also discussed bilateral trade, but gave no further details.
The Turkish president is due to hold talks with US President Donald Trump in Washington on Wednesday.


kml.clear
Clears the current kml file, removing any previous plots
Contents
Syntax
k = kml('kml title here'); --- any plot code here k.clear; --- new plot code here
Description
kml.clear will delete any plot inside the current kml object, leaving it empty for future use. It will not delete any temporary file created on disk, such as images, nor will remove any .kml file previously saved.
Example
% Create a new kml object k = kml('my kml file'); % Plot a sample curve to the kml, and open it in Google Earth t = linspace(0,360,1000); k.plot(20*t, 30*cosd(t/2)); k.run; % Clear the previous contents k.clear; % Plot a new curve there, and open the new contents in Google Earth k.plot(30*t, 90*cosd(t/2)); k.run;
This is the first plot
This is the second plot after clearing the kml object
This file is part of the kml toolbox. Copyright 2012 Rafael Fernandes de Oliveira (rafael@rafael.aero)


--- layout: post title: Analysis Paralysis date: 2006-12-12 00:00:00 category: software-development ---
Analysis Paralysis: "If you can’t define what it is you actually want to achieve then you need more analysis. If you are in the 10th hour of meetings to discuss what particular shade of green will most inspire customers without having developed a functional prototype to see if the solution is even viable then you are wasting valuable time and brain power with analysis paralysis. "


Group WindowThe group window is a convenient container for storing often-used documents. The group window only stores references to documents, not the documents themselves. You can add documents, directories or even disks to this group. When double clicked, Pe first checks if the file is a text file by looking at its mimetype. If it is, Pe will try to open the file itself, otherwise the file is passed on to the Tracker to be opened. To add a document, click the "" icon, or simply drag the document from the Tracker into the group. To remove a document, select it and click the "" icon. Whenever a group window is closed, its contents are saved to a file. If you save it for the first time you will be given a Save File Dialog to name it. You can force a save by typing Command-S when the group window is the active window. Recovering a group windowIf you accidentally destroy the mimetype of the file of a group window, the group window will be opened in Pe as a plain text file displaying all the paths for the items of this group window. If this happens, you can use FileTypes to give back to this file its correct mimetype. The correct mimetype is "text/x-vnd.Hekkel-Pe-Group". |
|||
|
Last updated: 05/17/98 |


Are you sure you want to deactivate?
Please fill the securityCAT field accordingly to complete the activation


Database output serves for storing generated links into the clean database. Minimal and maximal confidence of links to be stored can be specified as real numbers.


| Package | Description |
|---|---|
| org.opensaml.xmlsec.keyinfo.impl |
Interfaces and classes for working with XML KeyInfo elements.
|
| org.opensaml.xmlsec.keyinfo.impl.provider |
Specific implementations of
KeyInfoProvider . |
| Modifier and Type | Method and Description |
|---|---|
protected void |
BasicProviderKeyInfoCredentialResolver.initResolutionContext(KeyInfoResolutionContext kiContext,
KeyInfo keyInfo,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet)
Initialize the resolution context that will be used by the providers.
|
protected void |
LocalKeyInfoCredentialResolver.postProcess(KeyInfoResolutionContext kiContext,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
List<org.opensaml.security.credential.Credential> credentials)
Hook for subclasses to do post-processing of the credential set after all KeyInfo children have been processed.
|
protected void |
BasicProviderKeyInfoCredentialResolver.postProcess(KeyInfoResolutionContext kiContext,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
List<org.opensaml.security.credential.Credential> credentials)
Hook for subclasses to do post-processing of the credential set after all KeyInfo children have been processed.
|
protected void |
BasicProviderKeyInfoCredentialResolver.postProcessEmptyCredentials(KeyInfoResolutionContext kiContext,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
List<org.opensaml.security.credential.Credential> credentials)
Hook for processing the case where no credentials were returned by any resolution method by any provider, nor by
the processing of the
BasicProviderKeyInfoCredentialResolver.postProcess(KeyInfoResolutionContext, CriteriaSet, List) hook. |
Collection<org.opensaml.security.credential.Credential> |
KeyInfoProvider.process(KeyInfoCredentialResolver resolver,
org.opensaml.core.xml.XMLObject keyInfoChild,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
KeyInfoResolutionContext kiContext)
Process a specified KeyInfo child (XMLobject) and attempt to resolve a credential from it.
|
private void |
BasicProviderKeyInfoCredentialResolver.processKeyInfo(KeyInfo keyInfo,
KeyInfoResolutionContext kiContext,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
List<org.opensaml.security.credential.Credential> credentials)
The main processing logic implemented by this resolver.
|
protected Collection<org.opensaml.security.credential.Credential> |
BasicProviderKeyInfoCredentialResolver.processKeyInfoChild(KeyInfoResolutionContext kiContext,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
org.opensaml.core.xml.XMLObject keyInfoChild)
Process the given KeyInfo child with the registered providers.
|
protected void |
BasicProviderKeyInfoCredentialResolver.processKeyInfoChildren(KeyInfoResolutionContext kiContext,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
List<org.opensaml.security.credential.Credential> credentials)
Use registered providers to process the non-KeyValue/DEREncodedKeyValue children of KeyInfo.
|
protected void |
BasicProviderKeyInfoCredentialResolver.resolveKeyValue(KeyInfoResolutionContext kiContext,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
List<? extends org.opensaml.core.xml.XMLObject> keyValues)
Resolve the key from any KeyValue DEREncodedKeyValue element that may be present, and store the resulting key in
the resolution context.
|
| Modifier and Type | Method and Description |
|---|---|
protected KeyInfoCredentialContext |
AbstractKeyInfoProvider.buildCredentialContext(KeyInfoResolutionContext kiContext)
Build a credential context based on the current KeyInfo context, for return
in a resolved credential.
|
Collection<org.opensaml.security.credential.Credential> |
RSAKeyValueProvider.process(KeyInfoCredentialResolver resolver,
org.opensaml.core.xml.XMLObject keyInfoChild,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
KeyInfoResolutionContext kiContext)
Process a specified KeyInfo child (XMLobject) and attempt to resolve a credential from it.
|
Collection<org.opensaml.security.credential.Credential> |
KeyInfoReferenceProvider.process(KeyInfoCredentialResolver resolver,
org.opensaml.core.xml.XMLObject keyInfoChild,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
KeyInfoResolutionContext kiContext)
Process a specified KeyInfo child (XMLobject) and attempt to resolve a credential from it.
|
Collection<org.opensaml.security.credential.Credential> |
InlineX509DataProvider.process(KeyInfoCredentialResolver resolver,
org.opensaml.core.xml.XMLObject keyInfoChild,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
KeyInfoResolutionContext kiContext)
Process a specified KeyInfo child (XMLobject) and attempt to resolve a credential from it.
|
Collection<org.opensaml.security.credential.Credential> |
DSAKeyValueProvider.process(KeyInfoCredentialResolver resolver,
org.opensaml.core.xml.XMLObject keyInfoChild,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
KeyInfoResolutionContext kiContext)
Process a specified KeyInfo child (XMLobject) and attempt to resolve a credential from it.
|
Collection<org.opensaml.security.credential.Credential> |
DEREncodedKeyValueProvider.process(KeyInfoCredentialResolver resolver,
org.opensaml.core.xml.XMLObject keyInfoChild,
net.shibboleth.utilities.java.support.resolver.CriteriaSet criteriaSet,
KeyInfoResolutionContext kiContext)
Process a specified KeyInfo child (XMLobject) and attempt to resolve a credential from it.
|
Copyright © 1999–2016 Shibboleth Consortium. All rights reserved.


2006
2009
Private Developer-Basic Design Phase-Un-built
Apostolic Nunciature-Survey of Existing Premises
Updating of all Existing For Regularisation Purposes
private Developer-Submission Phase-Un-built
2010
2013
St.Georges College Gatehouse -Rio Douro Construction
Hartmann House Jubillee Hall - Ascon Africa - Rio Douro Construction
latter Day Saints Kadoma - Ascon Africa - Lues Construction
Women's law Center Library Extension - Ascon Africa - Real Construction
2014
2017


Adding a New Type¶
It’s easy to add converter functions for new, specialized types.
Remember that DMP already knows how to convert all of your models – you probably don’t need to add new converter functions for specific model classes.
Suppose we want to use geographic locations in the format “20.4,-162.0”. The URL might looks something like this:
http://localhost:8000/homepage/index/20.4,-162.0/
Let’s place our new class and converter function in homepage/apps.py
(you can actually place these in any file that loads with Django). Decorate the function with @parameter_converter
, with the type(s) as arguments.
from django.apps import AppConfig
from django_mako_plus import parameter_converter
class HomepageConfig(AppConfig):
name = 'homepage'
class GeoLocation(object):
def __init__(self, latitude, longitude):
self.latitude = latitude
self.longitude = longitude
@parameter_converter(GeoLocation)
def convert_geo_location(value, parameter):
parts = value.split(',')
if len(parts) < 2:
raise ValueError('Both latitude and longitude are required')
# the float constructor will raise ValueError if invalid
return GeoLocation(float(parts[0]), float(parts[1]))
The function must do one of the following:
- Return the converted type.
- Raise one of these exceptions:
ValueError
, which triggers the Http 404 page. This should be done for “expected” conversion errors (e.g. bad data in url).- DMP’s RedirectException or InternalRedirectException.
- Any other exception, which triggers the Http 500 page. This should be done for unexpected errors.
When Django starts up, the parameter_converter
decorator registers our new function as a converter.
Using the New Type¶
In homepage/views/index.py
, use our custom GeoLocation
class as the type hint in the index file.
from homepage.apps import GeoLocation
@view_function
def process_request(request, loc:GeoLocation):
print(loc.latitude)
print(loc.longitude)
return request.dmp.render('index.html', {})
Then during each request, DMP reads the signature on process_request
, looks up the GeoLocation
type, and calls our function to convert the string to a GeoLocation object.


Amarok is a powerful audio player for the KDE environment. Features include a context browser, integration with many online music services and support for management of several digital music players including Apple's iPod.
This package is known to build and work properly using an LFS-7.9 platform.
Download (HTTP): http://download.kde.org/stable/amarok/2.8.0/src/amarok-2.8.0.tar.bz2
Download (FTP): ftp://ftp.kde.org/pub/kde/stable/amarok/2.8.0/src/amarok-2.8.0.tar.bz2
Download MD5 sum: 53cfcb4819668b10e13b061478c7b32a
Download size: 38.1 MB
Estimated disk space required: 223 MB
Estimated build time: 9.2 SBU
kdelibs-4.14.16, MariaDB-10.1.11 or MySQL, and taglib-1.10
libkcompactdisc and audiocd-kio (for CD-ROM accesa and control) and FFmpeg-2.8.6
cURL-7.47.1 (for MP3tunes integration), libxml2-2.9.3 (for MP3tunes integration), OpenSSL-1.0.2g (for MP3tunes integration), QJson-0.8.1, nepomuk-core, Taglib-extras, Clamz (For Amazon integration), libgpod (for iPod support), liblastfm (for Last.fm integration), libmtp (for MTP device support), libmygpo-qt (for gpodder.net podcast support), libofa (for MusicDNS support), Loudmouth (for MP3tunes integration), qtscript-qt, and Google Mock (for tests)
User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/amarok
Amarok depends strongly on $KDE_PREFIX. If a new version of KDE is installed in a different location (for instance installing kde in a versioned directory of /opt), then this package will need to be reinstalled.
Install Amarok by running the following commands:
sed -i '/set.TAGLIB_MIN_VERSION/s/7/10/' CMakeLists.txt && mkdir build && cd build && cmake -DCMAKE_INSTALL_PREFIX=$KDE_PREFIX \ -DCMAKE_BUILD_TYPE=Release \ -DKDE4_BUILD_TESTS=OFF \ -Wno-dev .. && make
Now, as the root
user:
make install
sed ... CMakeLists.txt: Change the minimum requirement for taglib to allow it to be found.
-DKDE4_BUILD_TESTS=OFF
: This switch
disables the integrated tests. The test suite requires Google Mock.
Last updated on 2016-03-02 18:22:08 -0800


If you are interested in, or have questions about any of these projects, please contact the nominated developer.
We are also a well established software project (10 years old in September) with high aesthetic and quality standards for new code. This will provide a rewarding learning experience for someone new to free software development. Students looking for academic projects should be aware that a number of high quality papers have been written about various aspects of OpenSSH's implementation.
Source code is managed using CVS and bugs are tracked using Bugzilla. Familiarity with these tools is desirable, but not absolutely required. Final code submissions must compile without warnings and function properly on OpenBSD and Linux (at least).
After the initial application, selection and project startup, contributors will be asked to communicate on the public mailing lists and bugtracker. Contributors should expect debate and criticism of their proposals and implementation, but they can also expect this debate to be constructive.
Finally, contributors are not on their own - their mentors and the OpenSSH mailing list community are good sources of advice, ideas and wisdom.
| Project | Complexity | Contact |
|---|---|---|
| Renovate sftp(1) | low-medium | djm |
| Improve testing infrastructure | medium | djm |
| Performance improvements | medium | djm |
| Something else... | djm |
sftp(1) is, at present, primarily an interactive program with a relatively weak commandline interface. It lacks essential features that are present in scp(1), especially support for recursive operations.
This project would seek to make sftp(1) a drop-in replacement for commands that use scp(1) by implementing a compatible commandline syntax. This would require implementation of recursive uploads/downloads, as these are essential features supported by scp(1). The new features will need documentation (manual pages) and regression tests.
Further projects might include:
OpenSSH currently has a set of regression and interoperability tests, but these are by no means rigourous. They do not achieve 100% coverage of the available configuration and command-line options, let alone code coverage. There is no support for protocol-level testing, especially fuzzing.
The goal of this project would be to improve testing by
There are three aspects of ssh(1)/sshd(8) performance that are particularly interesting: CPU usage, memory usage and network performance. Some attention has been given to CPU and network performance, but more work could be done.
This project would examine and make quantifiable improvements to one or more of these performance aspects. A necessary precursor to this work will be development the some performance measurement standards and tools that will be used to assess the outcome.
This is probably the most open-ended of the suggested projects.
We are open to new ideas and opportunities to improve OpenSSH, so feel free to suggest something. If you would like some inspiration, you might also want to look at the portable OpenSSH bugtracker, as many enhancement requests are listed there.


Defined in generated file: python/ops/gen_array_ops.py
Subtracts sparse updates
from an existing tensor according to indices
.
tf.compat.v1.tensor_scatter_nd_sub
tf.compat.v1.tensor_scatter_sub
tf.compat.v2.tensor_scatter_nd_sub
tf.tensor_scatter_nd_sub( tensor, indices, updates, name=None )
This operation creates a new tensor by subtracting sparse updates
from the
passed in tensor
.
This operation is very similar to tf.scatter_nd_sub
, except that the updates
are subtracted from an existing tensor (as opposed to a variable). If the memory
for the existing tensor cannot be re-used, a copy is made and updated.
indices
is an integer tensor containing indices into a new tensor of shape
shape
. The last dimension of indices
can be at most the rank of shape
:
indices.shape[-1] <= shape.rank
The last dimension of indices
corresponds to indices into elements
(if indices.shape[-1] = shape.rank
) or slices
(if indices.shape[-1] < shape.rank
) along dimension indices.shape[-1]
of
shape
. updates
is a tensor with shape
indices.shape[:-1] + shape[indices.shape[-1]:]
The simplest form of tensor_scatter_sub is to subtract individual elements from a tensor by index. For example, say we want to insert 4 scattered elements in a rank-1 tensor with 8 elements.
In Python, this scatter subtract operation would look like this:
indices = tf.constant([[4], [3], [1], [7]]) updates = tf.constant([9, 10, 11, 12]) tensor = tf.ones([8], dtype=tf.int32) updated = tf.tensor_scatter_sub(tensor, indices, updates) with tf.Session() as sess: print(sess.run(scatter))
The resulting tensor would look like this:
[1, -10, 1, -9, -8, 1, 1, -11]
We can also, insert entire slices of a higher rank tensor all at once. For example, if we wanted to insert two slices in the first dimension of a rank-3 tensor with two matrices of new values.
In Python, this scatter add operation would look like this:
indices = tf.constant([[0], [2]]) updates = tf.constant([[[5, 5, 5, 5], [6, 6, 6, 6], [7, 7, 7, 7], [8, 8, 8, 8]], [[5, 5, 5, 5], [6, 6, 6, 6], [7, 7, 7, 7], [8, 8, 8, 8]]]) tensor = tf.ones([4, 4, 4]) updated = tf.tensor_scatter_sub(tensor, indices, updates) with tf.Session() as sess: print(sess.run(scatter))
The resulting tensor would look like this:
[[[-4, -4, -4, -4], [-5, -5, -5, -5], [-6, -6, -6, -6], [-7, -7, -7, -7]], [[1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]], [[-4, -4, -4, -4], [-5, -5, -5, -5], [-6, -6, -6, -6], [-7, -7, -7, -7]], [[1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]]]
Note that on CPU, if an out of bound index is found, an error is returned. On GPU, if an out of bound index is found, the index is ignored.
tensor
: A Tensor
. Tensor to copy/update.indices
: A Tensor
. Must be one of the following types: int32
, int64
.
Index tensor.updates
: A Tensor
. Must have the same type as tensor
.
Updates to scatter into output.name
: A name for the operation (optional).A Tensor
. Has the same type as tensor
.


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