The best is QSpinBox.

And for a double value use QDoubleSpinBox.

QSpinBox myInt;
myInt.setMinimum(-5);
myInt.setMaximum(5);
myInt.setSingleStep(1);// Will increment the current value with 1 (if you use up arrow key) (if you use down arrow key => -1)
myInt.setValue(2);// Default/begining value
myInt.value();// Get the current value
//connect(&myInt, SIGNAL(valueChanged(int)), this, SLOT(myValueChanged(int)));

I had the same issue for a long time and I spent God knows how much on it until I accidentally figured what to do. This solution worked on windows 10. All you need to do is to add C:\WINDOWS\System32 to Path variable under User Variables in Environmental Variables... Note that if you add this to the system variables, it may also work. But, that didn't work for me.

In Qt 4.7, there is the QDateTime::currentMSecsSinceEpoch() static function, which does exactly what you need, without any intermediary steps. Hence I'd recommend that for projects using Qt 4.7 or newer.

//How to Run App

bool ok = QProcess::startDetached("C:\\TTEC\\CozxyLogger\\CozxyLogger.exe");
qDebug() <<  "Run = " << ok;


//How to Kill App

system("taskkill /im CozxyLogger.exe /f");
qDebug() << "Close";

example

Are you sure you're in the right directory?
Opening a file without a full path will open it in the current working directory. In most cases this is not what you want. Try changing the first line to

QString filename="c:\\Data.txt" or
QString filename="c:/Data.txt"

and see if the file is created in c:\

You can change build versiyon.For example i tried QT 5.6.1 but it didn't work.Than i tried QT 5.7.0 .So it worked , Good Luck! :)

Install Qt

sudo apt-get install build-essential

sudo apt-get install qtcreator

sudo apt-get install qt5-default

Install documentation and examples If Qt Creator is installed thanks to the Ubuntu Sofware Center or thanks to the synaptic package manager, documentation for Qt Creator is not installed. Hitting the F1 key will show you the following message : "No documentation available". This can easily be solved by installing the Qt documentation:

sudo apt-get install qt5-doc

sudo apt-get install qt5-doc-html qtbase5-doc-html

sudo apt-get install qtbase5-examples

Restart Qt Creator to make the documentation available.

Error while loading shared libraries

Problem:

radiusd: error while loading shared libraries: libfreeradius-radius-2.1.10.so: cannot open shared object file: No such file or directory

Reason:

Actually, the libraries have been installed in a place where dynamic linker cannot find it.

Solution:

While this is not a guarantee but using the following command may help you solve the “cannot open shared object file” error:

sudo /sbin/ldconfig -v

http://www.lucidarme.me/how-install-documentation-for-qt-creator/

https://ubuntuforums.org/showthread.php?t=2199929

https://itsfoss.com/error-while-loading-shared-libraries/

ModelSim-Altera error

If you know the text in the combo box that you want to select, just use the setCurrentText() method to select that item.

ui->comboBox->setCurrentText("choice 2");

From the Qt 5.7 documentation

The setter setCurrentText() simply calls setEditText() if the combo box is editable. Otherwise, if there is a matching text in the list, currentIndex is set to the corresponding index.

So as long as the combo box is not editable, the text specified in the function call will be selected in the combo box.

Reference: http://doc.qt.io/qt-5/qcombobox.html#currentText-prop

void    QWidget::setWindowTitle ( const QString & )

EDIT: If you are using QtDesigner, on the property tab, there is an editable property called windowTitle which can be found under the QWidget section. The property tab can usually be found on the lower right part of the designer window.

The error you mean is due to missing additional include path. Try adding it with: INCLUDEPATH += C:\path\to\include\files\ Hope it works. Regards.

void Console()
{
    AllocConsole();
    FILE *pFileCon = NULL;
    pFileCon = freopen("CONOUT$", "w", stdout);

    COORD coordInfo;
    coordInfo.X = 130;
    coordInfo.Y = 9000;

    SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE), coordInfo);
    SetConsoleMode(GetStdHandle(STD_OUTPUT_HANDLE),ENABLE_QUICK_EDIT_MODE| ENABLE_EXTENDED_FLAGS);
}

int main(int argc, char *argv[])
{
    Console();
    std::cout<<"start@@";
    qDebug()<<"start!";

You can't use std::cout as others have said,my way is perfect even for some code can't include "qdebug" !

It seems you need to do combobox->itemData(combobox->currentIndex()) if you want to get the current data of the QComboBox.

If you are using your own class derived from QComboBox, you can add a currentData() function.

create dir platforms and copy qwindows.dll to it, platforms and app.exe are in the same dir

cd app_dir mkdir platforms xcopy qwindows.dll platforms\qwindows.dll

Folder structure + app.exe + platforms\qwindows.dll

If you are facing problem with pip3 install pyqt5 then try pip3 install pyqt5==5.12.0
This solved the problem for me

You have to replace string line

QString line = in.readLine();

into while:

QFile file("/home/hamad/lesson11.txt");
if(!file.open(QIODevice::ReadOnly)) {
    QMessageBox::information(0, "error", file.errorString());
}

QTextStream in(&file);

while(!in.atEnd()) {
    QString line = in.readLine();    
    QStringList fields = line.split(",");    
    model->appendRow(fields);    
}

file.close();

The best way to set any feature regarding the colors of any widget is to use QPalette.

And the easiest way to find what you are looking for is to open Qt Designer and set the palette of a QLabel and check the generated code.

You need to generate a python file from your ui file with the pyuic tool (site-packages\pyqt4\bin)

pyuic form1.ui > form1.py

with pyqt4

pyuic4.bat form1.ui > form1.py

Then you can import the form1 into your script.

Building on @Kristian's answer, I had a desire to display a fixed number of decimal places. That can be accomplished with other arguments in the QString::number(...) function. For instance, I wanted 3 decimal places:

double value = 34.0495834;
QString strValue = QString::number(value, 'f', 3);
// strValue == "34.050"

The 'f' specifies decimal format notation (more info here, you can also specify scientific notation) and the 3 specifies the precision (number of decimal places). Probably already linked in other answers, but more info about the QString::number function can be found here in the QString documentation

Ubuntu 16.04 64bit. I got the problem for apparently no reasons. The night before I watched a movie on my VideoLan instance, that night I would like to watch another one with VideoLan. VLC just didn't want to run because of the error into the question. I google a bit and I found the solution it solved my problem: from now on, VLC is runnable just like before. The solution is this comand:

sudo ln -sf /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/ /usr/bin/

I am not able to explain what are its consequencies, but I know it creates some missing symbolic link.

On the comments:

sscanf(Abcd, "%f %s", &f,&s);

Gives an Error.

This is the right way:

sscanf(Abcd, "%f %s", &f,qPrintable(s));

As an update of @Live's answer, for Qt = 5.2 there is no more need to subclass QThread, as now the sleep functions are public:

Static Public Members

• QThread * currentThread()
• Qt::HANDLE currentThreadId()
• int idealThreadCount()
• void msleep(unsigned long msecs)
• void sleep(unsigned long secs)
• void usleep(unsigned long usecs)
• void yieldCurrentThread()

cf http://qt-project.org/doc/qt-5/qthread.html#static-public-members

You can use the sprintf method, however the arg method is preferred as it supports unicode.

QString str;
str.sprintf("%s %d", "string", 213);

After creating your QVBoxLayout in Qt Designer, right-click on the background of your widget/dialog/window (not the QVBoxLayout, but the parent widget) and select Lay Out -> Lay Out in a Grid from the bottom of the context-menu. The QVBoxLayout should now stretch to fit the window and will resize automatically when the entire window is resized.

Like it's written up there, you forget to type #include <sstream>

#include <sstream>
using namespace std;

QString Stats_Manager::convertInt(int num)
{
   stringstream ss;
   ss << num;
   return ss.str();
}

You can also use some other ways to convert int to string, like

char numstr[21]; // enough to hold all numbers up to 64-bits
sprintf(numstr, "%d", age);
result = name + numstr;

check this!

Example: Read json from file

/* test.json */
{
   "appDesc": {
      "description": "SomeDescription",
      "message": "SomeMessage"
   },
   "appName": {
      "description": "Home",
      "message": "Welcome",
      "imp":["awesome","best","good"]
   }
}


void readJson()
   {
      QString val;
      QFile file;
      file.setFileName("test.json");
      file.open(QIODevice::ReadOnly | QIODevice::Text);
      val = file.readAll();
      file.close();
      qWarning() << val;
      QJsonDocument d = QJsonDocument::fromJson(val.toUtf8());
      QJsonObject sett2 = d.object();
      QJsonValue value = sett2.value(QString("appName"));
      qWarning() << value;
      QJsonObject item = value.toObject();
      qWarning() << tr("QJsonObject of description: ") << item;

      /* in case of string value get value and convert into string*/
      qWarning() << tr("QJsonObject[appName] of description: ") << item["description"];
      QJsonValue subobj = item["description"];
      qWarning() << subobj.toString();

      /* in case of array get array and convert into string*/
      qWarning() << tr("QJsonObject[appName] of value: ") << item["imp"];
      QJsonArray test = item["imp"].toArray();
      qWarning() << test[1].toString();
   }

OUTPUT

QJsonValue(object, QJsonObject({"description": "Home","imp": ["awesome","best","good"],"message": "YouTube"}) ) 
"QJsonObject of description: " QJsonObject({"description": "Home","imp": ["awesome","best","good"],"message": "YouTube"}) 
"QJsonObject[appName] of description: " QJsonValue(string, "Home") 
"Home" 
"QJsonObject[appName] of value: " QJsonValue(array, QJsonArray(["awesome","best","good"]) ) 
"best" 

Example: Read json from string

Assign json to string as below and use the readJson() function shown before:

val =   
'  {
       "appDesc": {
          "description": "SomeDescription",
          "message": "SomeMessage"
       },
       "appName": {
          "description": "Home",
          "message": "Welcome",
          "imp":["awesome","best","good"]
       }
    }';

OUTPUT

QJsonValue(object, QJsonObject({"description": "Home","imp": ["awesome","best","good"],"message": "YouTube"}) ) 
"QJsonObject of description: " QJsonObject({"description": "Home","imp": ["awesome","best","good"],"message": "YouTube"}) 
"QJsonObject[appName] of description: " QJsonValue(string, "Home") 
"Home" 
"QJsonObject[appName] of value: " QJsonValue(array, QJsonArray(["awesome","best","good"]) ) 
"best" 

You can use QTextCodec to convert the bytearray to a string:

QString DataAsString = QTextCodec::codecForMib(1015)->toUnicode(Data);

(1015 is UTF-16, 1014 UTF-16LE, 1013 UTF-16BE, 106 UTF-8)

From your example we can see that the string "test" is encoded as "t\0 e\0 s\0 t\0 \0 \0" in your encoding, i.e. every ascii character is followed by a \0-byte, or resp. every ascii character is encoded as 2 bytes. The only unicode encoding in which ascii letters are encoded in this way, are UTF-16 or UCS-2 (which is a restricted version of UTF-16), so in your case the 1015 mib is needed (assuming your local endianess is the same as the input endianess).

I use the same method suggested by chalup,

ParentDirectory = <your directory>

RCC_DIR = "$$ParentDirectory\Build\RCCFiles"
UI_DIR = "$$ParentDirectory\Build\UICFiles"
MOC_DIR = "$$ParentDirectory\Build\MOCFiles"
OBJECTS_DIR = "$$ParentDirectory\Build\ObjFiles"

CONFIG(debug, debug|release) { 
    DESTDIR = "$$ParentDirectory\debug"
}
CONFIG(release, debug|release) { 
    DESTDIR = "$$ParentDirectory\release"
}

Thank you RedX and Kaz for your answers. I don't get why by me it gives the path of the exe. I found an other way to do it :

QString pwd("");
char * PWD;
PWD = getenv ("PWD");
pwd.append(PWD);
cout << "Working directory : " << pwd << flush;

It is less elegant than a single line... but it works for me.

1. Implement a slot in your QMainWindow where you will open your new Window,
2. Place a widget on your QMainWindow,
3. Connect a signal from this widget to a slot from the QMainWindow (for example: if the widget is a QPushButton connect the signal click() to the QMainWindow custom slot you have created).

Code example:

MainWindow.h

// ...
include "newwindow.h"
// ...
public slots:
   void openNewWindow();
// ...
private:
   NewWindow *mMyNewWindow;
// ...
}

MainWindow.cpp

// ...
   MainWindow::MainWindow()
   {
      // ...
      connect(mMyButton, SIGNAL(click()), this, SLOT(openNewWindow()));
      // ...
   }
// ...
void MainWindow::openNewWindow()
{
   mMyNewWindow = new NewWindow(); // Be sure to destroy your window somewhere
   mMyNewWindow->show();
   // ...
}

This is an example on how display a custom new window. There are a lot of ways to do this.

If you are printing to stderr using the stdio library, a call to fflush(stderr) should flush the buffer and get you real-time logging.

I came across this question because I had a problem when following the answers, so I post my solution here.

The above examples all show samples with strings containing only ASCII values, in which case everything works fine. However, when dealing with strings in Windows whcih can also contain other characters, like german umlauts, then these solutions don't work

The only code that gives correct results in such cases is

std::string s = "Übernahme";
QString q = QString::fromLocal8Bit(s.c_str());

If you don't have to deal with such strings, then the above answers will work fine.

Drawing an image using a QLabel seems like a bit of a kludge to me. With newer versions of Qt you can use a QGraphicsView widget. In Qt Creator, drag a Graphics View widget onto your UI and name it something (it is named mainImage in the code below). In mainwindow.h, add something like the following as private variables to your MainWindow class:

QGraphicsScene *scene;
QPixmap image;

Then just edit mainwindow.cpp and make the constructor something like this:

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent), ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    image.load("myimage.png");
    scene = new QGraphicsScene(this);
    scene->addPixmap(image);
    scene->setSceneRect(image.rect());

    ui->mainImage->setScene(scene);
}

add to your qmake file

QMAKE_CXXFLAGS+= -std=c++11
QMAKE_LFLAGS +=  -std=c++11

You can use this;

QString data;
data.toStdString().c_str();

Let's go to the source -- 2.6.32, for example. The message is printed by show_signal_msg() function in arch/x86/mm/fault.c if the show_unhandled_signals sysctl is set.

"error" is not an errno nor a signal number, it's a "page fault error code" -- see definition of enum x86_pf_error_code.

"[7fa44d2f8000+f6f000]" is starting address and size of virtual memory area where offending object was mapped at the time of crash. Value of "ip" should fit in this region. With this info in hand, it should be easy to find offending code in gdb.

You can use the QMessage object to create a Message Box then add buttons :

QMessageBox msgBox;
msgBox.setWindowTitle("title");
msgBox.setText("Question");
msgBox.setStandardButtons(QMessageBox::Yes);
msgBox.addButton(QMessageBox::No);
msgBox.setDefaultButton(QMessageBox::No);
if(msgBox.exec() == QMessageBox::Yes){
  // do something
}else {
  // do something else
}

In my case the issue was that my default kit's Qt version was None.

Go to Tools -> Options... -> Build & Run -> Kits tab, click on the kit you want to make as default and you'll see a list of fields beneath, one of which is Qt version. If it's None, change it to one of the versions available to you in the Qt versions tab which is just next to the Kits tab.

Use the left function:

QString yourString = "This is a string";
QString leftSide = yourString.left(5);
qDebug() << leftSide; // output "This "

Also have a look at mid() if you want more control.

To both check if it exists and create if it doesn't, including intermediaries:

QDir dir("path/to/dir");
if (!dir.exists())
    dir.mkpath(".");

I tried using phyatt's AspectRatioPixmapLabel class, but experienced a few problems:

• Sometimes my app entered an infinite loop of resize events. I traced this back to the call of QLabel::setPixmap(...) inside the resizeEvent method, because QLabel actually calls updateGeometry inside setPixmap, which may trigger resize events...
• heightForWidth seemed to be ignored by the containing widget (a QScrollArea in my case) until I started setting a size policy for the label, explicitly calling policy.setHeightForWidth(true)
• I want the label to never grow more than the original pixmap size
• QLabel's implementation of minimumSizeHint() does some magic for labels containing text, but always resets the size policy to the default one, so I had to overwrite it

That said, here is my solution. I found that I could just use setScaledContents(true) and let QLabel handle the resizing. Of course, this depends on the containing widget / layout honoring the heightForWidth.

aspectratiopixmaplabel.h

#ifndef ASPECTRATIOPIXMAPLABEL_H
#define ASPECTRATIOPIXMAPLABEL_H

#include <QLabel>
#include <QPixmap>

class AspectRatioPixmapLabel : public QLabel
{
    Q_OBJECT
public:
    explicit AspectRatioPixmapLabel(const QPixmap &pixmap, QWidget *parent = 0);
    virtual int heightForWidth(int width) const;
    virtual bool hasHeightForWidth() { return true; }
    virtual QSize sizeHint() const { return pixmap()->size(); }
    virtual QSize minimumSizeHint() const { return QSize(0, 0); }
};

#endif // ASPECTRATIOPIXMAPLABEL_H

aspectratiopixmaplabel.cpp

#include "aspectratiopixmaplabel.h"

AspectRatioPixmapLabel::AspectRatioPixmapLabel(const QPixmap &pixmap, QWidget *parent) :
    QLabel(parent)
{
    QLabel::setPixmap(pixmap);
    setScaledContents(true);
    QSizePolicy policy(QSizePolicy::Maximum, QSizePolicy::Maximum);
    policy.setHeightForWidth(true);
    this->setSizePolicy(policy);
}

int AspectRatioPixmapLabel::heightForWidth(int width) const
{
    if (width > pixmap()->width()) {
        return pixmap()->height();
    } else {
        return ((qreal)pixmap()->height()*width)/pixmap()->width();
    }
}

David's answer works fine if you're only using it for outputting to a file or displaying on the screen, but if a function or library requires a char* for parsing, then this method works best:

// copy QString to char*
QString filename = "C:\dev\file.xml";
char* cstr;
string fname = filename.toStdString();
cstr = new char [fname.size()+1];
strcpy( cstr, fname.c_str() );

// function that requires a char* parameter
parseXML(cstr);

mytimer.h:

    #ifndef MYTIMER_H
    #define MYTIMER_H

    #include <QTimer>

    class MyTimer : public QObject
    {
        Q_OBJECT
    public:
        MyTimer();
        QTimer *timer;

    public slots:
        void MyTimerSlot();
    };

    #endif // MYTIME

mytimer.cpp:

#include "mytimer.h"
#include <QDebug>

MyTimer::MyTimer()
{
    // create a timer
    timer = new QTimer(this);

    // setup signal and slot
    connect(timer, SIGNAL(timeout()),
          this, SLOT(MyTimerSlot()));

    // msec
    timer->start(1000);
}

void MyTimer::MyTimerSlot()
{
    qDebug() << "Timer...";
}

main.cpp:

#include <QCoreApplication>
#include "mytimer.h"

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    // Create MyTimer instance
    // QTimer object will be created in the MyTimer constructor
    MyTimer timer;

    return a.exec();
}

If we run the code:

Timer...
Timer...
Timer...
Timer...
Timer...
...

resources

For my Qt 5.7, open QtCreator, go to Tools -> Options -> Build & Run -> Qt Versions gave me the location of qmake.

I've had a lot of trouble over the years trying to get QApplication::processEvents to work, as is used in some of the top answers. IIRC, if multiple locations end up calling it, it can end up causing some signals to not get processed (https://doc.qt.io/archives/qq/qq27-responsive-guis.html). My usual preferred option is to utilize a QEventLoop (https://doc.qt.io/archives/qq/qq27-responsive-guis.html#waitinginalocaleventloop).

inline void delay(int millisecondsWait)
{
    QEventLoop loop;
    QTimer t;
    t.connect(&t, &QTimer::timeout, &loop, &QEventLoop::quit);
    t.start(millisecondsWait);
    loop.exec();
}

Moreover to convert whatever you want, you can use QVariant. For an int to a QString you get:

QVariant(3).toString();

A float to a string or a string to a float:

QVariant(3.2).toString();
QVariant("5.2").toFloat();

You can call QCoreApplication::exit(0) to exit with code 0

QPushButton *button = new QPushButton;
button->setIcon(QIcon(":/icons/..."));
button->setIconSize(QSize(65, 65));

I understand your frustration the " Graphics view widget" is not the best way to do this, yes it can be done, but it's almost exactly the same as using a label ( for what you want any way) now all the ways listed do work but...

For you and any one else that may come across this question he easiest way to do it ( what you're asking any way ) is this.

QPixmap pix("Path\\path\\entername.jpeg");
    ui->label->setPixmap(pix);

}

Since Qt 5.5 you can use QTextStream::readLineInto. It behaves similar to std::getline and is maybe faster as QTextStream::readLine, because it reuses the string:

QIODevice* device;
QTextStream in(&device);

QString line;
while (in.readLineInto(&line)) {
  // ...
}

Well, I got it. One way is to override the QWidget::closeEvent(QCloseEvent *event) method in your class definition and add your code into that function. Example:

class foo : public QMainWindow
{
    Q_OBJECT
private:
    void closeEvent(QCloseEvent *bar);
    // ...
};


void foo::closeEvent(QCloseEvent *bar)
{
    // Do something
    bar->accept();
}

Once java-8 is out (March 2014) you'll be able to use streams:

If you have a List<Integer>

int sum = list.stream().mapToInt(Integer::intValue).sum();

If it's an int[]

int sum = IntStream.of(a).sum();

For Java 8, Oracle JDK vs. OpenJDK my take of key differences:

• OpenJDK is an open source implementation of the Java Standard Edition platform with contribution from Oracle and the open Java community.

• OpenJDK is released under license GPL v2 wherein Oracle JDK is licensed under Oracle Binary Code License Agreement.

• Actually, Oracle JDK’s build process builds from OpenJDK source code. So there is no major technical difference between Oracle JDK and OpenJDK. Apart from the base code, Oracle JDK includes, Oracle’s implementation of Java Plugin and Java WebStart. It also includes third-party closed source and open source components like graphics rasterizer and Rhino respectively. OpenJDK Font Renderer and Oracle JDK Flight Recorder are the noticeable major differences between Oracle JDK and OpenJDK.

• Rockit was the Oracle’s JVM and from Java SE 7, HotSpot and JRockit merged into a single JVM. So now we have only the merged HotSpot JVM available.
• There are instances where people claim that they had issues while running OpenJDK and that got solved when switched over to Oracle JDK.
• Twitter has its own JDK.
• Software like Minecraft expects Oracle JDK to be used. In fact, warns.

For a full list of differences please see the source article: Oracle JDK vs OpenJDK and Java JDK Development Process

Well, If you want to update a node in XML, the XmlDocument is fine - you needn't use XmlTextWriter.

XmlDocument doc = new XmlDocument();
doc.Load("D:\\build.xml");
XmlNode root = doc.DocumentElement;
XmlNode myNode = root.SelectSingleNode("descendant::books");
myNode.Value = "blabla";
doc.Save("D:\\build.xml");

Indeed you can access the information from the session even when the session is being destroyed on an HttpSessionLisener by doing:

public void sessionDestroyed(HttpSessionEvent hse) {
    SecurityContextImpl sci = (SecurityContextImpl) hse.getSession().getAttribute("SPRING_SECURITY_CONTEXT");
    // be sure to check is not null since for users who just get into the home page but never get authenticated it will be
    if (sci != null) {
        UserDetails cud = (UserDetails) sci.getAuthentication().getPrincipal();
        // do whatever you need here with the UserDetails
    }
 }

or you could also access the information anywhere you have the HttpSession object available like:

SecurityContextImpl sci = (SecurityContextImpl) session().getAttribute("SPRING_SECURITY_CONTEXT");

the last assuming you have something like:

HttpSession sesssion = ...; // can come from request.getSession(false);

I created a widget that can completely disable or present a read-only view of the content on your page. It disables all buttons, anchors, removes all click events, etc., and can re-enable them all back again. It even supports all jQuery UI widgets as well. I created it for an application I wrote at work. You're free to use it.

Check it out at ( http://www.dougestep.com/dme/jquery-disabler-widget ).

Swift 2.0

Updated version of Ivica M's answer:

let wordDict = [
     "A" : [1, 2],
     "Z" : [3, 4],
     "D" : [5, 6]
]

let sortedDict = wordDict.sort { $0.0 < $1.0 }
print("\(sortedDict)") // 

Swift 3

wordDict.sorted(by: { $0.0 < $1.0 })

Notice:

Don't be surprised that the resulting type is an array rather than a dictionary. Dictionaries cannot be sorted! The resulting data-type is a sorted array, just like in @Ivica's answer.

In some contexts using a ' character beforehand will work, but if you save to CSV and load again this is impossible.

'01/01/2010 14:30:00

Code from the above answer by Dutchie432

.FixedHeightContainer {
    float:right;
    height: 250px;
    width:250px; 
    padding:3px; 
    background:#f00;
}

.Content {
    height:224px;
    overflow:auto;
    background:#fff;
}

var newTH = document.createElement('th');
newTH.onclick = function() {
      //Your code here
}

I had the same issue with PuttyGen not wanting to import an openSSH private key. I tried everything and what I found out was the old version of PuttyGen did not support importing OpenSSH. Once I downloaded the latest Putty, puttygen then allowed it to import the openssh private key just fine. I now have a hole in the side of my desk for pounding my head against it for the past hour.

public class TagYourDiseaseAdapter extends RecyclerView.Adapter { private ReCyclerViewItemClickListener mRecyclerViewItemClickListener; private Context mContext;

List<Datum> deviceList = Collections.emptyList();

/**
 * Initialize the values
 *
 * @param context : context reference
 * @param devices : data
 */

public TagYourDiseaseAdapter(Context context, List<Datum> devices,
                             ReCyclerViewItemClickListener mreCyclerViewItemClickListener) {
    this.mContext = context;
    this.deviceList = devices;
    this.mRecyclerViewItemClickListener = mreCyclerViewItemClickListener;
}


/**
 * @param parent   : parent ViewPgroup
 * @param viewType : viewType
 * @return ViewHolder
 * <p>
 * Inflate the Views
 * Create the each views and Hold for Reuse
 */
@Override
public TagYourDiseaseAdapter.OrderHistoryViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_tag_disease, parent, false);
    TagYourDiseaseAdapter.OrderHistoryViewHolder myViewHolder = new TagYourDiseaseAdapter.OrderHistoryViewHolder(view);
    return myViewHolder;
}


/**
 * @param holder   :view Holder
 * @param position : position of each Row
 *                 set the values to the views
 */
@Override
public void onBindViewHolder(final TagYourDiseaseAdapter.OrderHistoryViewHolder holder, final int position) {
    Picasso.with(mContext).load(deviceList.get(position).getIconUrl()).into(holder.document);
    holder.name.setText(deviceList.get(position).getDiseaseName());

    holder.radioButton.setOnCheckedChangeListener(null);
    holder.radioButton.setChecked(deviceList.get(position).isChecked());

    //if true, your checkbox will be selected, else unselected
    //holder.radioButton.setChecked(objIncome.isSelected());

    holder.radioButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            deviceList.get(position).setChecked(isChecked);
        }
    });


}

@Override
public int getItemCount() {
    return deviceList.size();
}


/**
 * Create The view First Time and hold for reuse
 * View Holder for Create and Hold the view for ReUse the views instead of create again
 * Initialize the views
 */

public class OrderHistoryViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    ImageView document;
    TextView name;
    CheckBox radioButton;

    public OrderHistoryViewHolder(View itemView) {
        super(itemView);
        document = itemView.findViewById(R.id.img_tag);
        name = itemView.findViewById(R.id.text_tag_name);
        radioButton = itemView.findViewById(R.id.rdBtn_tag_disease);
        radioButton.setOnClickListener(this);
        //this.setIsRecyclable(false);
    }


    @Override
    public void onClick(View view) {
        mRecyclerViewItemClickListener.onItemClickListener(this.getAdapterPosition(), view);
    }
}

}

In my case ,I just needed to add a dummy .ts file.So I created a test.ts file with no contents and ran npm start to solve the problem.

I don't think there is a way to ignore adding DEFINERs to the dump. But there are ways to remove them after the dump file is created.

1. Open the dump file in a text editor and replace all occurrences of DEFINER=root@localhost with an empty string ""

2. Edit the dump (or pipe the output) using perl:

   perl -p -i.bak -e "s/DEFINER=\`\w.*\`@\`\d[0-3].*[0-3]\`//g" mydatabase.sql
   

3. Pipe the output through sed:

   mysqldump ... | sed -e 's/DEFINER[ ]*=[ ]*[^*]*\*/\*/' > triggers_backup.sql
   

I had the same error in Laravel 5.2, turns out the namespace is incorrect in the model class definition.

I created my model using the command:

php artisan make:model myModel

By default, Laravel 5 creates the model under App folder, but if you were to move the model to another folder like I did, you must change the the namespace inside the model definition too:

namespace App\ModelFolder;

To include the folder name when creating the model you could use (don't forget to use double back slashes):

php artisan make:model ModelFolder\\myModel

@Html.ActionLink("Edit","ActionName",new{id=item.id},new{onclick="functionname();"})

I think this does the best job

https://angular.io/api/platform-browser/EventManager

for instance in app.component

constructor(private eventManager: EventManager) {
    const removeGlobalEventListener = this.eventManager.addGlobalEventListener(
      'document',
      'keypress',
      (ev) => {
        console.log('ev', ev);
      }
    );
  }

This is a good and a tricky question. The topic of URI design is at the same time the most prominent part of a REST API and, therefore, a potentially long-term commitment towards the users of that API.

Since evolution of an application and, to a lesser extent, its API is a fact of life and that it's even similar to the evolution of a seemingly complex product like a programming language, the URI design should have less natural constraints and it should be preserved over time. The longer the application's and API's lifespan, the greater the commitment to the users of the application and API.

On the other hand, another fact of life is that it is hard to foresee all the resources and their aspects that would be consumed through the API. Luckily, it is not necessary to design the entire API which will be used until Apocalypse. It is sufficient to correctly define all the resource end-points and the addressing scheme of every resource and resource instance.

Over time you may need to add new resources and new attributes to each particular resource, but the method that API users follow to access a particular resources should not change once a resource addressing scheme becomes public and therefore final.

This method applies to HTTP verb semantics (e.g. PUT should always update/replace) and HTTP status codes that are supported in earlier API versions (they should continue to work so that API clients that have worked without human intervention should be able to continue to work like that).

Furthermore, since embedding of API version into the URI would disrupt the concept of hypermedia as the engine of application state (stated in Roy T. Fieldings PhD dissertation) by having a resource address/URI that would change over time, I would conclude that API versions should not be kept in resource URIs for a long time meaning that resource URIs that API users can depend on should be permalinks.

Sure, it is possible to embed API version in base URI but only for reasonable and restricted uses like debugging a API client that works with the the new API version. Such versioned APIs should be time-limited and available to limited groups of API users (like during closed betas) only. Otherwise, you commit yourself where you shouldn't.

A couple of thoughts regarding maintenance of API versions that have expiration date on them. All programming platforms/languages commonly used to implement web services (Java, .NET, PHP, Perl, Rails, etc.) allow easy binding of web service end-point(s) to a base URI. This way it's easy to gather and keep a collection of files/classes/methods separate across different API versions.

From the API users POV, it's also easier to work with and bind to a particular API version when it's this obvious but only for limited time, i.e. during development.

From the API maintainer's POV, it's easier to maintain different API versions in parallel by using source control systems that predominantly work on files as the smallest unit of (source code) versioning.

However, with API versions clearly visible in URI there's a caveat: one might also object this approach since API history becomes visible/aparent in the URI design and therefore is prone to changes over time which goes against the guidelines of REST. I agree!

The way to go around this reasonable objection, is to implement the latest API version under versionless API base URI. In this case, API client developers can choose to either:

• develop against the latest one (committing themselves to maintain the application protecting it from eventual API changes that might break their badly designed API client).

• bind to a specific version of the API (which becomes apparent) but only for a limited time

For example, if API v3.0 is the latest API version, the following two should be aliases (i.e. behave identically to all API requests):

http://shonzilla/api/customers/1234
http://shonzilla/api/v3.0/customers/1234
http://shonzilla/api/v3/customers/1234

In addition, API clients that still try to point to the old API should be informed to use the latest previous API version, if the API version they're using is obsolete or not supported anymore. So accessing any of the obsolete URIs like these:

http://shonzilla/api/v2.2/customers/1234
http://shonzilla/api/v2.0/customers/1234
http://shonzilla/api/v2/customers/1234
http://shonzilla/api/v1.1/customers/1234
http://shonzilla/api/v1/customers/1234

should return any of the 30x HTTP status codes that indicate redirection that are used in conjunction with Location HTTP header that redirects to the appropriate version of resource URI which remain to be this one:

http://shonzilla/api/customers/1234

There are at least two redirection HTTP status codes that are appropriate for API versioning scenarios:

• 301 Moved permanently indicating that the resource with a requested URI is moved permanently to another URI (which should be a resource instance permalink that does not contain API version info). This status code can be used to indicate an obsolete/unsupported API version, informing API client that a versioned resource URI been replaced by a resource permalink.

• 302 Found indicating that the requested resource temporarily is located at another location, while requested URI may still supported. This status code may be useful when the version-less URIs are temporarily unavailable and that a request should be repeated using the redirection address (e.g. pointing to the URI with APi version embedded) and we want to tell clients to keep using it (i.e. the permalinks).

• other scenarios can be found in Redirection 3xx chapter of HTTP 1.1 specification

Ubuntu these days comes with ufw - Uncomplicated Firewall. ufw is an easy-to-use method of handling iptables rules.

Try using this command to allow a port

sudo ufw allow 1701

To test connectivity, you could try shutting down the VPN software (freeing up the ports) and using netcat to listen, like this:

nc -l 1701

Then use telnet from your Windows host and see what shows up on your Ubuntu terminal. This can be repeated for each port you'd like to test.

Your code is not doing what I think you think it is doing. The line for item in z: will iterate through z, each time making item equal to one single element of z. The original item list is therefore overwritten before you've done anything with it.

I think you want something like this:

item = [0,1,2,3,4,5,6,7,8,9]

for element in item:
    if element not in z:
        print element

But you could easily do this like:

[x for x in item if x not in z]

or (if you don't mind losing duplicates of non-unique elements):

set(item) - set(z)

 <TextView
        android:id="@+id/tvName"
        style="@style/textViewBoldLarge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:text="Welcome"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>

After careful review, I propose this as a far cleaner solution within this thread:

$("input").focus(function(){
    $(this).on("click.a keyup.a", function(e){      
        $(this).off("click.a keyup.a").select();
    });
});

Demo in jsFiddle

The Problem:

Here's a little bit of explanation:

First, let's take a look at the order of events when you mouse or tab into a field.
We can log all the relevant events like this:

$("input").on("mousedown focus mouseup click blur keydown keypress keyup change",
              function(e) { console.log(e.type); });

Note: I've changed this solution to use click rather than mouseup as it happens later in the event pipeline and seemed to be causing some issues in firefox as per @Jocie's comment

Some browsers attempt to position the cursor during the mouseup or click events. This makes sense since you might want to start the caret in one position and drag over to highlight some text. It can't make a designation about the caret position until you have actually lifted the mouse. So functions that handle focus are fated to respond too early, leaving the browser to override your positioning.

But the rub is that we really do want to handle the focus event. It lets us know the first time that someone has entered the field. After that point, we don't want to continue to override user selection behavior.

The Solution:

Instead, within the focus event handler, we can quickly attach listeners for the click (click in) and keyup (tab in) events that are about to fire.

Note: The keyup of a tab event will actually fire in the new input field, not the previous one

We only want to fire the event once. We could use .one("click keyup), but this would call the event handler once for each event type. Instead, as soon as either mouseup or keyup is pressed we'll call our function. The first thing we'll do, is remove the handlers for both. That way it won't matter whether we tabbed or moused in. The function should execute exactly once.

Note: Most browsers naturally select all text during a tab event, but as animatedgif pointed out, we still want to handle the keyup event, otherwise the mouseup event will still be lingering around anytime we've tabbed in. We listen to both so we can turn off the listeners as soon as we've processed the selection.

Now, we can call select() after the browser has made its selection so we're sure to override the default behavior.

Finally, for extra protection, we can add event namespaces to the mouseup and keyup functions so the .off() method doesn't remove any other listeners that might be in play.

Tested in IE 10+, FF 28+, & Chrome 35+

Alternatively, if you want to extend jQuery with a function called once that will fire exactly once for any number of events:

$.fn.once = function (events, callback) {
    return this.each(function () {
        var myCallback = function (e) {
            callback.call(this, e);
            $(this).off(events, myCallback);
        };
        $(this).on(events, myCallback);
    });
};

Then you can simplify the code further like this:

$("input").focus(function(){
    $(this).once("click keyup", function(e){      
        $(this).select();
    });
});

Demo in fiddle

Select e.lastname as employee ,m.lastname as manager
  from employees e,employees m
 where e.managerid=m.employyid(+)

Someone pointed me to args4j lately which is annotation based. I really like it!

Deleting Parameters

        oldJson=[{firstName:'s1',lastName:'v1'},
                 {firstName:'s2',lastName:'v2'},
                 {firstName:'s3',lastName:'v3'}]
        
        newJson = oldJson.map(({...ele}) => {
          delete ele.firstName;
          return ele;
          })

it deletes and and create new array and as we are using spread operator on each objects so the original array objects are also remains unharmed

You can force an implicit conversion by using a string in an arithmetic operations as in a= "10" + 0, but this is not quite as clear or as clean as using tonumber explicitly.

Only methods with WebGet can be accessed from browser IE ; you can access other http verbs by just typing address

You can either try Restful service startup kit of codeples or use fiddler to test your other http verbs

Arrays in C are converted, in most of the cases, to a pointer to the first element of the array itself. And more in detail arrays passed into functions are always converted into pointers.

Here a quote from K&R2nd:

When an array name is passed to a function, what is passed is the location of the initial element. Within the called function, this argument is a local variable, and so an array name parameter is a pointer, that is, a variable containing an address.

Writing:

void arraytest(int a[])

has the same meaning as writing:

void arraytest(int *a)

So despite you are not writing it explicitly it is as you are passing a pointer and so you are modifying the values in the main.

For more I really suggest reading this.

Moreover, you can find other answers on SO here

As stated in the other answer, width: auto doesn't work due to the width being generated by the input's size attribute, which cannot be set to "auto" or anything similar.

There are a few workarounds you can use to cause it to play nicely with the box model, but nothing fantastic as far as I know.

First you can set the padding in the field using percentages, making sure that the width adds up to 100%, e.g.:

input {
  width: 98%;
  padding: 1%;
}

Another thing you might try is using absolute positioning, with left and right set to 0. Using this markup:

<fieldset>
    <input type="text" />
</fieldset>

And this CSS:

fieldset {
  position: relative;
}

input {
    position: absolute;
    left: 0;
    right: 0;
}

This absolute positioning will cause the input to fill the parent fieldset horizontally, regardless of the input's padding or margin. However a huge downside of this is that you now have to deal with the height of the fieldset, which will be 0 unless you set it. If your inputs are all the same height this will work for you, simply set the fieldset's height to whatever the input's height should be.

Other than this there are some JS solutions, but I don't like applying basic styling with JS.

with this solution:

for(int i = dtPerson.Rows.Count-1; i >= 0; i--) 
{ 
    DataRow dr = dtPerson.Rows[i]; 
    if (dr["name"] == "Joe")
        dr.Delete();
} 

if you are going to use the datatable after deleting the row, you will get an error. So what you can do is: replace dr.Delete(); with dtPerson.Rows.Remove(dr);

The JSONP comes to mind:

JSONP or "JSON with padding" is a complement to the base JSON data format, a usage pattern that allows a page to request and more meaningfully use JSON from a server other than the primary server. JSONP is an alternative to a more recent method called Cross-Origin Resource Sharing.

You can create your own custom Dialog. It's fairly easy. If you want to dismiss it with a selection in the spinner, then add an OnItemClickListener and add

int n = mSpinner.getSelectedItemPosition();
mReadyListener.ready(n);
SpinnerDialog.this.dismiss();

as in the OnClickListener for the OK button. There's one caveat, though, and it's that the onclick listener does not fire if you reselect the default option. You need the OK button also.

Start with the layout:

res/layout/spinner_dialog.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content">
<TextView 
    android:id="@+id/dialog_label" 
    android:layout_height="wrap_content" 
    android:layout_width="fill_parent"
    android:hint="Please select an option" 
    />
<Spinner
    android:id="@+id/dialog_spinner" 
    android:layout_height="wrap_content" 
    android:layout_width="fill_parent"
    />
<Button
    android:id="@+id/dialogOK" 
    android:layout_width="120dp"
    android:layout_height="wrap_content" 
    android:text="OK"
    android:layout_below="@id/dialog_spinner"
    />
<Button
    android:id="@+id/dialogCancel" 
    android:layout_width="120dp"
    android:layout_height="wrap_content" 
    android:text="Cancel"
    android:layout_below="@id/dialog_spinner"
    android:layout_toRightOf="@id/dialogOK"
    />
</RelativeLayout>

Then, create the class:

src/your/package/SpinnerDialog.java:

public class SpinnerDialog extends Dialog {
    private ArrayList<String> mList;
    private Context mContext;
    private Spinner mSpinner;

   public interface DialogListener {
        public void ready(int n);
        public void cancelled();
    }

    private DialogListener mReadyListener;

    public SpinnerDialog(Context context, ArrayList<String> list, DialogListener readyListener) {
        super(context);
        mReadyListener = readyListener;
        mContext = context;
        mList = new ArrayList<String>();
        mList = list;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.spinner_dialog);
        mSpinner = (Spinner) findViewById (R.id.dialog_spinner);
        ArrayAdapter<String> adapter = new ArrayAdapter<String> (mContext, android.R.layout.simple_spinner_dropdown_item, mList);
        mSpinner.setAdapter(adapter);

        Button buttonOK = (Button) findViewById(R.id.dialogOK);
        Button buttonCancel = (Button) findViewById(R.id.dialogCancel);
        buttonOK.setOnClickListener(new android.view.View.OnClickListener(){
            public void onClick(View v) {
                int n = mSpinner.getSelectedItemPosition();
                mReadyListener.ready(n);
                SpinnerDialog.this.dismiss();
            }
        });
        buttonCancel.setOnClickListener(new android.view.View.OnClickListener(){
            public void onClick(View v) {
                mReadyListener.cancelled();
                SpinnerDialog.this.dismiss();
            }
        });
    }
}

Finally, use it as:

mSpinnerDialog = new SpinnerDialog(this, mTimers, new SpinnerDialog.DialogListener() {
  public void cancelled() {
    // do your code here
  }
  public void ready(int n) {
    // do your code here
  }
});

    jQuery("#input").live('change', function() {
        // since we check more than once against the value, place it in a var.
        var inputvalue = $("#input").attr("value");

        // if it's value **IS NOT** ""
        if(inputvalue !== "") {
            jQuery(this).css('outline', 'solid 1px red'); 
        }   

        // else if it's value **IS** ""
        else if(inputvalue === "") {
            alert('empty'); 
        }

    });

The problem in my case was having two versions of the same library in the build path. The older version of the library didn't have the function, and newer one did.

$("element").removeClass("class1 class2");

From removeClass(), the class parameter:

One or more CSS classes to remove from the elements, these are separated by spaces.

How about this?

fscanf(file,"%d %d %d %d %d %d %d",&line1_1,&line1_2, &line1_3, &line2_1, &line2_2, &line3_1, &line3_2); 

In this case spaces in fscanf match multiple occurrences of any whitespace until the next token in found.

All,

The answer with the most votes, does not really work if you are working with an object. In that case, if a property is not present, the check will not work. And that was the issue in our case: see this sample:

var x =
{ name: "Homer", LastName: "Simpson" };

var y =
{ name: "Marge"} ;

var z =
{ name: "Bart" , LastName: undefined} ;

var a =
{ name: "Lisa" , LastName: ""} ;

var hasLastNameX = x.LastName != null;
var hasLastNameY = y.LastName != null;
var hasLastNameZ = z.LastName != null;
var hasLastNameA = a.LastName != null;



alert (hasLastNameX + ' ' + hasLastNameY + ' ' + hasLastNameZ + ' ' + hasLastNameA);

var hasLastNameXX = x.LastName !== null;
var hasLastNameYY = y.LastName !== null;
var hasLastNameZZ = z.LastName !== null;
var hasLastNameAA = a.LastName !== null;

alert (hasLastNameXX + ' ' + hasLastNameYY + ' ' + hasLastNameZZ + ' ' + hasLastNameAA);

Outcome:

true , false, false , true (in case of !=)
true , true, true, true (in case of !==) => so in this sample not the correct answer

plunkr link: https://plnkr.co/edit/BJpVHD95FhKlpHp1skUE

For beginners, the accepted answer is correct, but a little terse if you're not that familiar with either VSC or Regex.

So, in case this is your first contact with either:

To find and modify text,

1. In the "Find" step, you can use regex with "capturing groups," e.g. I want to find (group1) and (group2), using parentheses. This would find the same text as I want to find group1 and group2, but with the difference that you can then reference group1 and group2 in the next step:

2. In the "Replace" step, you can refer to the capturing groups via $1, $2 etc, so you could change the sentence to I found $1 and $2 having a picnic, which would output I found group1 and group2 having a picnic.

Notes:

• Instead of just a string, anything inside or outside the () can be a regular expression.

• $0 refers to the whole match

Updated(from @Antoine comment)

You can use @supports

@supports (-moz-appearance:none) {_x000D_
    h1 { color:red; } _x000D_
}

<h1>This should be red in FF</h1>

More on @supports here

I was getting the same UnicodeEncodeError when saving scraped web content to a file. To fix it I replaced this code:

with open(fname, "w") as f:
    f.write(html)

with this:

import io
with io.open(fname, "w", encoding="utf-8") as f:
    f.write(html)

Using io gives you backward compatibility with Python 2.

If you only need to support Python 3 you can use the builtin open function instead:

with open(fname, "w", encoding="utf-8") as f:
    f.write(html)

If you store an object in session state, that object must be serializable.

http://www.hpenterprisesecurity.com/vulncat/en/vulncat/dotnet/asp_dotnet_bad_practices_non_serializable_object_stored_in_session.html

edit:

In order for the session to be serialized correctly, all objects the application stores as session attributes must declare the [Serializable] attribute. Additionally, if the object requires custom serialization methods, it must also implement the ISerializable interface.

https://vulncat.hpefod.com/en/detail?id=desc.structural.dotnet.asp_dotnet_bad_practices_non_serializable_object_stored_in_session#C%23%2fVB.NET%2fASP.NET

Use "vol" shell command and parse serial from it's output, like this. Works at least in Win7

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace CheckHD
{
        class HDSerial
        {
            const string MY_SERIAL = "F845-BB23";
            public static bool CheckSerial()
            {
                string res = ExecuteCommandSync("vol");
                const string search = "Number is";
                int startI = res.IndexOf(search, StringComparison.InvariantCultureIgnoreCase);

                if (startI > 0)
                {
                    string currentDiskID = res.Substring(startI + search.Length).Trim();
                    if (currentDiskID.Equals(MY_SERIAL))
                        return true;
                }
                return false;
            }

            public static string ExecuteCommandSync(object command)
            {
                try
                {
                    // create the ProcessStartInfo using "cmd" as the program to be run,
                    // and "/c " as the parameters.
                    // Incidentally, /c tells cmd that we want it to execute the command that follows,
                    // and then exit.
                    System.Diagnostics.ProcessStartInfo procStartInfo =
                        new System.Diagnostics.ProcessStartInfo("cmd", "/c " + command);

                    // The following commands are needed to redirect the standard output.
                    // This means that it will be redirected to the Process.StandardOutput StreamReader.
                    procStartInfo.RedirectStandardOutput = true;
                    procStartInfo.UseShellExecute = false;
                    // Do not create the black window.
                    procStartInfo.CreateNoWindow = true;
                    // Now we create a process, assign its ProcessStartInfo and start it
                    System.Diagnostics.Process proc = new System.Diagnostics.Process();
                    proc.StartInfo = procStartInfo;
                    proc.Start();
                    // Get the output into a string
                    string result = proc.StandardOutput.ReadToEnd();
                    // Display the command output.
                    return result;
                }
                catch (Exception)
                {
                    // Log the exception
                    return null;
                }
            }
        }
    }

@Vertexwahns answer, but written in bash. For the people who are lazy:

boost_version=$(cat /usr/include/boost/version.hpp | grep define | grep "BOOST_VERSION " | cut -d' ' -f3)
echo "installed boost version: $(echo "$boost_version / 100000" | bc).$(echo "$boost_version / 100 % 1000" | bc).$(echo "$boost_version % 100 " | bc)"

Gives me installed boost version: 1.71.0

after putting "Allow from all", you need to restart your xampp to apply the setting. thanks

Do you want to match a class exactly, e.g. only matching FileInputStream instead of any subclass of FileInputStream? If so, use getClass() and ==. I would typically do this in an equals, so that an instance of X isn't deemed equal to an instance of a subclass of X - otherwise you can get into tricky symmetry problems. On the other hand, that's more usually useful for comparing that two objects are of the same class than of one specific class.

Otherwise, use instanceof. Note that with getClass() you will need to ensure you have a non-null reference to start with, or you'll get a NullPointerException, whereas instanceof will just return false if the first operand is null.

Personally I'd say instanceof is more idiomatic - but using either of them extensively is a design smell in most cases.

transient is the solution for me. thanks! it's native to Java and avoids you to add another framework-specific annotation.

   public static class StringEx
    {
        public static bool Contains(this String str, string[] Arr, StringComparison comp)
        {
            if (Arr != null)
            {
                foreach (string s in Arr)
                {
                    if (str.IndexOf(s, comp)>=0)
                    { return true; }
                }
            }

            return false;
        }

        public static bool Contains(this String str,string[] Arr)
        {
            if (Arr != null)
            {
                foreach (string s in Arr)
                {
                    if (str.Contains(s))
                    { return true; }
                }
            }

            return false;
        }
    }


var portCode = Database.DischargePorts
                   .Single(p => p.PortName.Contains( new string[] {"BALTIMORE"},  StringComparison.CurrentCultureIgnoreCase) ))
                   .PortCode;

The only way to know for sure is to benchmark it, and even that is not as simple as it may sound. The JIT compiler can do very unexpected things to your code.

Quick Answer (TL;DR)

• Twig string concatenation may also be done with the format() filter

Detailed Answer

Context

• Twig 2.x
• String building and concatenation

Problem

• Scenario: DeveloperGailSim wishes to do string concatenation in Twig
  • Other answers in this thread already address the concat operator
  • This answer focuses on the format filter which is more expressive

Solution

• Alternative approach is to use the format filter
• The format filter works like the sprintf function in other programming languages
• The format filter may be less cumbersome than the ~ operator for more complex strings

Example00

• example00 string concat bare

  
  {{ "%s%s%s!"|format('alpha','bravo','charlie') }}
  
  --- result --
  
  alphabravocharlie!
  
  

Example01

• example01 string concat with intervening text

  
  {{ "The %s in %s falls mainly on the %s!"|format('alpha','bravo','charlie') }}
  
  --- result --
  
  The alpha in bravo falls mainly on the charlie!
  
  

Example02

• example02 string concat with numeric formatting

• follows the same syntax as sprintf in other languages

  
  {{ "The %04d in %04d falls mainly on the %s!"|format(2,3,'tree') }}
  
  --- result --
  
  The 0002 in 0003 falls mainly on the tree!
  
  

See also

• http://twig.sensiolabs.org/doc/2.x/filters/format.html
• https://stackoverflow.com/tags/printf/info

Well, to calculate the average of an array, you can consider using for loop instead of while loop.

So as per your question let me assume an array as arrNumbers ( here i'm considering the same array elements as in your question )

int arrNumbers[] = new int[]{1, 3, 2, 5, 8};
int sum = 0;

for(int a = 0; a < arrNumbers.length; a++)
{
   sum = sum + arrNumbers[a];
}

double average = sum / arrNumbers.length;

System.out.println("Average is: " + average);

You can use scanner class as well. It's left to you.

On OS X, use pbcopy; pbpaste goes in the opposite direction.

pbcopy < .ssh/id_rsa.pub

You can try something like this:

StringBuilder sb = new StringBuilder();
if (condition) { sb.append("elementName").append(","); }
if (anotherCondition) { sb.append("anotherElementName").append(","); }
String parameterString = sb.toString();

Do not use >; it messes up the character encoding. Use:

Get-Content files.* | Set-Content newfile.file

Go to the downloaded folder and there you find config.m4. Open the terminal and run phpsize.

Note that %in% returns a logical vector of TRUE and FALSE. To negate it, you can use ! in front of the logical statement:

SE_CSVLinelist_filtered <- filter(SE_CSVLinelist_clean, 
 !where_case_travelled_1 %in% 
   c('Outside Canada','Outside province/territory of residence but within Canada'))

Regarding your original approach with -c(...), - is a unary operator that "performs arithmetic on numeric or complex vectors (or objects which can be coerced to them)" (from help("-")). Since you are dealing with a character vector that cannot be coerced to numeric or complex, you cannot use -.

Disabling the "SETTINGS > PRIVACY > don´t allow JavaScript" in Chrome will enable the right click function and allow the Firebug Console to work; but will also disable all the other JavaScript codes.

The right way to do this is to disable only the specific JavaScript; looking for any of the following lines of code:

• Function disableclick
• Function click … return false;
• body oncontextmenu="return false;"

mapply(sum,people[,-1])

Height Weight 
   199    425 

String value = "{first_name = naresh,last_name = kumar,gender = male}"

Let's start

1. Remove { and } from the String>>first_name = naresh,last_name = kumar,gender = male
2. Split the String from ,>> array of 3 element
3. Now you have an array with 3 element
4. Iterate the array and split each element by =
5. Create a Map<String,String> put each part separated by =. first part as Key and second part as Value

Here is another way, without the need for nesting the repeaters.

From the Angularjs docs:

It is possible to get ngRepeat to iterate over the properties of an object using the following syntax:

<div ng-repeat="(key, value) in steps"> {{key}} : {{value}} </div>

The problem is with the API interaction method. The JSON parsing is changed only in syntax. The main problem is with the way of fetching data. What you are using is a synchronous way of getting data. This doesn't work in every case. What you should be using is an asynchronous way to fetch data. In this way, you have to request data through the API and wait for it to respond with data. You can achieve this with URL session and third party libraries like Alamofire. Below is the code for URL Session method.

let urlString = "https://api.forecast.io/forecast/apiKey/37.5673776,122.048951"
let url = URL.init(string: urlString)
URLSession.shared.dataTask(with:url!) { (data, response, error) in
    guard error == nil else {
        print(error)
    }
    do {
        let Data = try JSONSerialization.jsonObject(with: data!) as! [String:Any]
        // Note if your data is coming in Array you should be using [Any]()
        //Now your data is parsed in Data variable and you can use it normally
        let currentConditions = Data["currently"] as! [String:Any]
        print(currentConditions)
        let currentTemperatureF = currentConditions["temperature"] as! Double
        print(currentTemperatureF)
    } catch let error as NSError {
        print(error)
    }
}.resume()

Actually, you are applying CSS on modal div.

you have to apply CSS on .modal-dialog

For example, see the following code.

<div class="modal" id="myModal">
 <div class="modal-dialog" style="width:xxxpx;"> <!-- Set width of div which you want -->
      <div class="modal-content">
           Lorem Ipsum some text...content 

        </div>
     </div>
 </div>

Bootstrap also provides classes for setting div width.

For small modal use modal-sm

And for large modal modal-lg

Here's a detailed explanation about the calculation of MaxClients and MaxRequestsPerChild

http://web.archive.org/web/20160415001028/http://www.genericarticles.com/mediawiki/index.php?title=How_to_optimize_apache_web_server_for_maximum_concurrent_connections_or_increase_max_clients_in_apache

ServerLimit 16
StartServers 2
MaxClients 200
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25

First of all, whenever an apache is started, it will start 2 child processes which is determined by StartServers parameter. Then each process will start 25 threads determined by ThreadsPerChild parameter so this means 2 process can service only 50 concurrent connections/clients i.e. 25x2=50. Now if more concurrent users comes, then another child process will start, that can service another 25 users. But how many child processes can be started is controlled by ServerLimit parameter, this means that in the configuration above, I can have 16 child processes in total, with each child process can handle 25 thread, in total handling 16x25=400 concurrent users. But if number defined in MaxClients is less which is 200 here, then this means that after 8 child processes, no extra process will start since we have defined an upper cap of MaxClients. This also means that if I set MaxClients to 1000, after 16 child processes and 400 connections, no extra process will start and we cannot service more than 400 concurrent clients even if we have increase the MaxClient parameter. In this case, we need to also increase ServerLimit to 1000/25 i.e. MaxClients/ThreadsPerChild=40 So this is the optmized configuration to server 1000 clients

<IfModule mpm_worker_module>
    ServerLimit          40
    StartServers          2
    MaxClients          1000
    MinSpareThreads      25
    MaxSpareThreads      75 
    ThreadsPerChild      25
    MaxRequestsPerChild   0
</IfModule>

Open Atom and press ALT key you are done.

Use ENUM in MySQL for true / false it gives and accepts the true / false values without any extra code.

ALTER TABLE `itemcategory` ADD `aaa` ENUM('false', 'true') NOT NULL DEFAULT 'false'

public partial class App : System.Windows.Application
{
    public bool IsProcessOpen(string name)
    {
        foreach (Process clsProcess in Process.GetProcesses()) 
        {
            if (clsProcess.ProcessName.Contains(name))
            {
                return true;
            }
        }

        return false;
    }

    protected override void OnStartup(StartupEventArgs e)
    {
        // Get Reference to the current Process
        Process thisProc = Process.GetCurrentProcess();

        if (IsProcessOpen("name of application.exe") == false)
        {
            //System.Windows.MessageBox.Show("Application not open!");
            //System.Windows.Application.Current.Shutdown();
        }
        else
        {
            // Check how many total processes have the same name as the current one
            if (Process.GetProcessesByName(thisProc.ProcessName).Length > 1)
            {
                // If ther is more than one, than it is already running.
                System.Windows.MessageBox.Show("Application is already running.");
                System.Windows.Application.Current.Shutdown();
                return;
            }

            base.OnStartup(e);
        }
    }

As per comments, First you need to install an instance of SQL Server if you don't already have one - https://msdn.microsoft.com/en-us/library/ms143219.aspx

Once this is installed you must connect to this instance (server) and then you can create a database here - https://msdn.microsoft.com/en-US/library/ms186312.aspx

You have everything right, but the problem is with getLine1Number() function.

getLine1Number()- this method returns the phone number string for line 1, i.e the MSISDN for a GSM phone. Return null if it is unavailable.

this method works only for few cell phone but not all phones.

So, if you need to perform operations according to the sim(other than calling), then you should use getSimSerialNumber(). It is always unique, valid and it always exists.

You can use [ngClass] or [class.classname], both will work the same.
[class.my-class]="step==='step1'"

   OR

[ngClass]="{'my-class': step=='step1'}"

Both will work the same!

Can't you just send to INADDR_BROADCAST? Admittedly, that'll send on all interfaces - but that's rarely a problem.

Otherwise, ioctl and SIOCGIFBRDADDR should get you the address on *nix, and WSAioctl and SIO_GET_BROADCAST_ADDRESS on win32.

Since macOS Big Sur and IntelliJ IDEA 2020.3.2 you can use "open projects in tabs on macOS Big Sur" feature. To use it, you have to enable this feature in your system settings:

System Preferences -> General -> Prefer tabs [always] when opening documents

After this step, when you will try to open second project in IntelliJ, choose New Window (yes, New Window, not This Window).

It should result with opening new project in same window, but in the new card:

Easier way:

#required_number = 18

required_number=input("Insert a number: ")
while required_number != 18
    print("Oops! Something is wrong")
    required_number=input("Try again: ")
if required_number == '18'
    print("That's right!")

#continue the code

If you want to use it in plain SQL, I would let the store procedure fill a table or temp table with the resulting rows (or go for @Tony Andrews approach).
If you want to use @Thilo's solution, you have to loop the cursor using PL/SQL. Here an example: (I used a procedure instead of a function, like @Thilo did)

create or replace procedure myprocedure(retval in out sys_refcursor) is
begin
  open retval for
    select TABLE_NAME from user_tables;
end myprocedure;

 declare 
   myrefcur sys_refcursor;
   tablename user_tables.TABLE_NAME%type;
 begin
   myprocedure(myrefcur);
   loop
     fetch myrefcur into tablename;
     exit when myrefcur%notfound;
     dbms_output.put_line(tablename);
   end loop;
   close myrefcur;
 end;

try confirmed and without password_confirmation rule:

$this->validate($request, [
        'name' => 'required|min:3|max:50',
        'email' => 'email',
        'vat_number' => 'max:13',
        'password' => 'confirmed|min:6',
    ]);

I know this question is old, but I recently dealt with the exact same problem and went round and round on it for a couple weeks. Multiple searches on Google turned up a lot of useful information, but most of it was focused on Open Graph tags, which I wasn't interested in using. Turns out my site had multiple issues, but here are some of the basics.

1. As EightyEight said, make sure your HTML is valid - and the same goes for your javascript and server-side code (PHP, ASP, etc.). I had a small PHP error in a piece of code that was executing as a separate call to the server from the main page. Due to a number of bizarre coincidences, that code was generating a 500 error - but ONLY for IE6 and strict parsing engines like the W3C validator and the Facebook page crawler. The problem didn't appear in modern browsers (Chrome 4, FF 3.5, IE 8, etc) so I didn't see it right away, but older/stricter clients were showing the 500 every time and that was the main reason FB wasn't crawling our page (when everything else seemed to be correct).

2. Regarding Randy's response, he's correct that Facebook will keep an old cached copy of your page long after you've updated it. FB claims it's only held for 24 hours, but I experienced much longer times than that. FORTUNATELY, FB has released their "URL Linter" tool that will show you a preview of how your page will appear when being shared on FB, and it will force FB to instantly update its cache of your page. This was a lifesaving tool. You can find it at http://developers.facebook.com/tools/lint/

3. Regarding the URL Linter tool, be aware that each variation of a URL is cached separately on Facebook, so "www.example.com" is not the same as "example.com". Also, unique capitalization is stored as well, so "ExampleOne.com" is not the same as "exampleone.com". (This led to a lot of confusion between my client and myself when it appeared to me that the cache had been updated just fine and the client claimed they weren't seeing the updates. Turns out I was looking at exampleone.com and had used Linter to update the cache, but they were looking at exampleOne.com which I hadn't submitted to Linter. As a result, I ended up submitting quite a few variations of the URL to Linter just to cover the bases.)

4. WyrdNEXUS's advice to use the image_src link tag is spot-on. This allows you to be sure that FB is scraping the best possible image for your page. There are some varying guidelines out there about what specs the image file should have, but I've successfully used a 128px square image and have seen a 130x97 image make it through as well. Here is Facebook's official documentation from http://developers.facebook.com/docs/reference/plugins/like/:

   Images must be at least 50 pixels by 50 pixels. Square images work best, but you are allowed to use images up to three times as wide as they are tall.

   Obviously, FB will resize a large image for you, but you'll almost always get better results if you resize it yourself beforehand.

5. Regarding Mike Cooper's link to the eHow article, avoid using step #1 in that article. It was valid advice when the article was written and when Mike posted the link, but it's now better to use the URL Linter tool for previewing how your page will appear when being shared. By using Linter, you won't cause FB to cache a (potentially) bad copy of the page before you get a chance to tweak it.

For this (and most plotting) I would not rely on the Pandas wrappers to matplotlib. Instead, just use matplotlib directly:

import matplotlib.pyplot as plt
plt.scatter(df['col_name_1'], df['col_name_2'])
plt.show() # Depending on whether you use IPython or interactive mode, etc.

and remember that you can access a NumPy array of the column's values with df.col_name_1.values for example.

I ran into trouble using this with Pandas default plotting in the case of a column of Timestamp values with millisecond precision. In trying to convert the objects to datetime64 type, I also discovered a nasty issue: < Pandas gives incorrect result when asking if Timestamp column values have attr astype >.

You should provide a valid buffer placeholder. that is:

TCHAR s[100];
DWORD a = GetCurrentDirectory(100, s);

You may also be interested in using joins on updates, which is possible as well.

Update someTable Set someValue = 4 From someTable s Inner Join anotherTable a on s.id = a.id Where a.id = 4
-- Only updates someValue in someTable who has a foreign key on anotherTable with a value of 4.

Edit: If the values you are updating aren't coming from somewhere else in the database, you'll need to issue multiple update queries.

Flexbox-based tables can easily be sorted by using flexbox property "order".

Here's an example:

function sortTable() {_x000D_
  let table = document.querySelector("#table")_x000D_
  let children = [...table.children]_x000D_
  let sortedArr = children.map(e => e.innerText).sort((a, b) => a.localeCompare(b));_x000D_
_x000D_
  children.forEach(child => {_x000D_
    child.style.order = sortedArr.indexOf(child.innerText)_x000D_
  })_x000D_
}_x000D_
_x000D_
document.querySelector("#sort").addEventListener("click", sortTable)

#table {_x000D_
  display: flex;_x000D_
  flex-direction: column_x000D_
}

<div id="table">_x000D_
  <div>Melissa</div>_x000D_
  <div>Justin</div>_x000D_
  <div>Judy</div>_x000D_
  <div>Skipper</div>_x000D_
  <div>Alex</div>_x000D_
</div>_x000D_
<button id="sort"> sort </button>

Explanation

The sortTable function extracts the data of the table into an array, which is then sorted in alphabetic order. After that we loop through the table items and assign the CSS property order equal to index of an item's data in our sorted array.

In etc/my.cnf try changing the max_allowed _packet and net_buffer_length to

max_allowed_packet=100000000
net_buffer_length=1000000 

if this is not working then try changing to

max_allowed_packet=100M
net_buffer_length=100K 

$(document).ready(function(){
 $('#category').change(function(){  
  $("#app").fadeOut();
$.ajax({
type: "POST",
url: "themes/ajax.php",
data: "cat="+$(this).val(),
cache: false,
success: function(msg)
    {
    $('#app').fadeIn().html(msg);
    $('#app').change(function(){    
    $("#store").fadeOut();
        $.ajax({
        type: "POST",
        url: "themes/ajax.php",
        data: "app="+$(this).val(),
        cache: false,
        success: function(ms)
            {
            $('#store').fadeIn().html(ms);

            }
            });// second ajAx
        });// second on change


     }// first  ajAx sucess
  });// firs ajAx
 });// firs on change

});

From ScottGu's blog:

Starting with the ASP.NET MVC 3 Beta release, you can now add a file called _ViewStart.cshtml (or _ViewStart.vbhtml for VB) underneath the \Views folder of your project:

The _ViewStart file can be used to define common view code that you want to execute at the start of each View’s rendering. For example, we could write code within our _ViewStart.cshtml file to programmatically set the Layout property for each View to be the SiteLayout.cshtml file by default:

Because this code executes at the start of each View, we no longer need to explicitly set the Layout in any of our individual view files (except if we wanted to override the default value above).

Important: Because the _ViewStart.cshtml allows us to write code, we can optionally make our Layout selection logic richer than just a basic property set. For example: we could vary the Layout template that we use depending on what type of device is accessing the site – and have a phone or tablet optimized layout for those devices, and a desktop optimized layout for PCs/Laptops. Or if we were building a CMS system or common shared app that is used across multiple customers we could select different layouts to use depending on the customer (or their role) when accessing the site.

This enables a lot of UI flexibility. It also allows you to more easily write view logic once, and avoid repeating it in multiple places.

Also see this.

In a more general sense this ability of MVC framework to "know" about _Viewstart.cshtml is called "Coding by convention".

Convention over configuration (also known as coding by convention) is a software design paradigm which seeks to decrease the number of decisions that developers need to make, gaining simplicity, but not necessarily losing flexibility. The phrase essentially means a developer only needs to specify unconventional aspects of the application. For example, if there's a class Sale in the model, the corresponding table in the database is called “sales” by default. It is only if one deviates from this convention, such as calling the table “products_sold”, that one needs to write code regarding these names.

Wikipedia

There's no magic to it. Its just been written into the core codebase of the MVC framework and is therefore something that MVC "knows" about. That why you don't find it in the .config files or elsewhere; it's actually in the MVC code. You can however override to alter or null out these conventions.

Without Custom Foreach Version:

datas.Where((data, index) =>
{
    //Your Logic
    return false;
}).Any();

In some simple case,my way is using where + false + any.
It is fater a little than foreach + select((data,index)=>new{data,index}),and without custom Foreach method.

MyLogic:

• use statement body run your logic.
• because return false,new Enumrable data count is zero.
• use Any() let yeild run.

Benchmark Test Code

[RPlotExporter, RankColumn]
public class BenchmarkTest
{
    public static IEnumerable<dynamic> TestDatas = Enumerable.Range(1, 10).Select((data, index) => $"item_no_{index}");

    [Benchmark]
    public static void ToArrayAndFor()
    {
        var datats = TestDatas.ToArray();
        for (int index = 0; index < datats.Length; index++)
        {
            var result = $"{datats[index]}{index}";
        }
    }

    [Benchmark]
    public static void IEnumrableAndForach()
    {
        var index = 0;
        foreach (var item in TestDatas)
        {
            index++;
            var result = $"{item}{index}";
        }
    }

    [Benchmark]
    public static void LinqSelectForach()
    {
        foreach (var item in TestDatas.Select((data, index) => new { index, data }))
        {
            var result = $"{item.data}{item.index}";
        }
    }

    [Benchmark]
    public static void LinqSelectStatementBodyToList()
    {
        TestDatas.Select((data, index) =>
        {
            var result = $"{data}{index}";
            return true;
        }).ToList();
    }

    [Benchmark]
    public static void LinqSelectStatementBodyToArray()
    {
        TestDatas.Select((data, index) =>
        {
            var result = $"{data}{index}";
            return true;
        }).ToArray();
    }

    [Benchmark]
    public static void LinqWhereStatementBodyAny()
    {
        TestDatas.Where((data, index) =>
        {
            var result = $"{data}{index}";
            return false;
        }).Any();
    }
}

class Program
{
    static void Main(string[] args)
    {
        var summary = BenchmarkRunner.Run<BenchmarkTest>();

        System.Console.Read();
    }
}

Benchmark Result :

                         Method |     Mean |     Error |    StdDev | Rank |
------------------------------- |---------:|----------:|----------:|-----:|
                  ToArrayAndFor | 4.027 us | 0.0797 us | 0.1241 us |    4 |
            IEnumrableAndForach | 3.494 us | 0.0321 us | 0.0285 us |    1 |
               LinqSelectForach | 3.842 us | 0.0503 us | 0.0471 us |    3 |
  LinqSelectStatementBodyToList | 3.822 us | 0.0416 us | 0.0389 us |    3 |
 LinqSelectStatementBodyToArray | 3.857 us | 0.0764 us | 0.0785 us |    3 |
      LinqWhereStatementBodyAny | 3.643 us | 0.0693 us | 0.0712 us |    2 |

if you have this error :

configure: error: Either a previously installed pkg-config or "glib-2.0 >= 2.16" could not be found. Please set GLIB_CFLAGS and GLIB_LIBS to the correct values or pass --with-internal-glib to configure to use the bundled copy.

Instead of do this command :

$ ./configure && make install

Do that :

./configure --with-internal-glib && make install

I had the similar problem. I tried sync with gradle files and removed .idea folder but nothing works.

Here is what worked for me :

1.) Close android studio

2.) Remove c:/Users/{User}/.AndroidStudio{version} folder

Caution: It will remove all your installed plugins and settings. Try this if nothing works

for foo in *.gz
do
  tar xf "$foo"
  rm "$foo"
done

var scrolltobottom = document.documentElement.scrollHeight - $(this).outerHeight() - $(this).scrollTop();

Compile configuration was deprecated and should be replaced by implementation or api.

You can read the docs at https://docs.gradle.org/current/userguide/java_library_plugin.html#sec:java_library_separation.

The brief part being-

The key difference between the standard Java plugin and the Java Library plugin is that the latter introduces the concept of an API exposed to consumers. A library is a Java component meant to be consumed by other components. It's a very common use case in multi-project builds, but also as soon as you have external dependencies.

The plugin exposes two configurations that can be used to declare dependencies: api and implementation. The api configuration should be used to declare dependencies which are exported by the library API, whereas the implementation configuration should be used to declare dependencies which are internal to the component.

For further explanation refer to this image.

A simple approach which returns a string with ip-addresses for the interfaces is:

from subprocess import check_output

ips = check_output(['hostname', '--all-ip-addresses'])

for more info see hostname.

I got this, the only way I found to fix this was to update all of mingw-64 (I did this using pacman on msys2 for your information).

Simple PHP solution to this:

if (isset($_POST['aaa'])){
echo '
<script type="text/javascript">
location.reload();
</script>';
}

As the page is reloaded it will update on screen the new data and clear the $_POST ;)

@Component Preferable for component scanning and automatic wiring.

When should you use @Bean?

Sometimes automatic configuration is not an option. When? Let's imagine that you want to wire components from 3rd-party libraries (you don't have the source code so you can't annotate its classes with @Component), so automatic configuration is not possible.

The @Bean annotation returns an object that spring should register as bean in application context. The body of the method bears the logic responsible for creating the instance.

A datetime.timedelta corresponds to the difference between two dates, not a date itself. It's only expressed in terms of days, seconds, and microseconds, since larger time units like months and years don't decompose cleanly (is 30 days 1 month or 0.9677 months?).

If you want to convert a timedelta into hours and minutes, you can use the total_seconds() method to get the total number of seconds and then do some math:

x = datetime.timedelta(1, 5, 41038)  # Interval of 1 day and 5.41038 seconds
secs = x.total_seconds()
hours = int(secs / 3600)
minutes = int(secs / 60) % 60

The question title is too wide and the author's need is more specific. In my case, I needed to extract all elements from nested list like in the example below:

Example:

input -> [1,2,[3,4]]
output -> [1,2,3,4]

The code below gives me the result, but I would like to know if anyone can create a simpler answer:

def get_elements_from_nested_list(l, new_l):
    if l is not None:
        e = l[0]
        if isinstance(e, list):
            get_elements_from_nested_list(e, new_l)
        else:
            new_l.append(e)
        if len(l) > 1:
            return get_elements_from_nested_list(l[1:], new_l)
        else:
            return new_l

Call of the method

l = [1,2,[3,4]]
new_l = []

get_elements_from_nested_list(l, new_l)

You cannot do it because you are already looping on it.

Inorder to avoid this situation use Iterator,which guarentees you to remove the element from list safely ...

List<Object> objs;
Iterator<Object> i = objs.iterator();
while (i.hasNext()) {
   Object o = i.next();
  //some condition
    i.remove();
}

I was able to stop Chrome 66 from autofilling by adding two fake inputs and giving them position absolute:

<form style="position: relative">
  <div style="position: absolute; top: -999px; left: -999px;">
    <input name="username" type="text" />
    <input name="password" type="password" />
  </div>
  <input name="username" type="text" />
  <input name="password" type="password" />

At first, I tried adding display:none; to the inputs but Chrome ignored them and autofilled the visible ones.

The new node is always added after the last node of the given Linked List. For example if the given Linked List is 5->10->15->20->25 and we add an item 30 at the end, then the Linked List becomes 5->10->15->20->25->30. Since a Linked List is typically represented by the head of it, we have to traverse the list till end and then change the next of last node to new node.

/* Given a reference (pointer to pointer) to the head
   of a list and an int, appends a new node at the end  */


    void append(struct node** head_ref, int new_data)
    {
    /* 1. allocate node */
         struct node* new_node = (struct node*) malloc(sizeof(struct node));

        struct node *last = *head_ref;  /* used in step 5*/

    /* 2. put in the data  */
        new_node->data  = new_data;

    /* 3. This new node is going to be the last node, so make next 
          of it as NULL*/
        new_node->next = NULL;

    /* 4. If the <a href="#">Linked List</a> is empty, then make the new node as head */
        if (*head_ref == NULL)
        {
       *head_ref = new_node;
       return;
        }  

    /* 5. Else traverse till the last node */
        while (last->next != NULL)
        last = last->next;

    /* 6. Change the next of last node */
        last->next = new_node;
        return;    
}

You Could also use this.. it works assuming 'yourimage.jpg' is in your public folder.

<img src={'./yourimage.jpg'}/>

Most answers blur the number element even if the cursor isn't hovering over it; the below does not

document.addEventListener("wheel", function(event) {
  if (document.activeElement.type === "number" &&
    document.elementFromPoint(event.x, event.y) == document.activeElement) {
    document.activeElement.blur();
  }
});

https://jsfiddle.net/s06puv3j/1/

1. del /s /q c:\where ever the file is\*
2. rmdir /s /q c:\where ever the file is\
3. mkdir c:\where ever the file is\

you can simple use this following code

train_data['labels']= train_data[["LABEL1","LABEL1","LABEL2","LABEL3","LABEL4","LABEL5","LABEL6","LABEL7"]].values.tolist()
train_df = pd.DataFrame(train_data, columns=['text','labels'])

Found an elegant way from MDN

var vegetables = ['parsnip', 'potato'];
var moreVegs = ['celery', 'beetroot'];

// Merge the second array into the first one
// Equivalent to vegetables.push('celery', 'beetroot');
Array.prototype.push.apply(vegetables, moreVegs);

console.log(vegetables); // ['parsnip', 'potato', 'celery', 'beetroot']

Or you can use the spread operator feature of ES6:

let fruits = [ 'apple', 'banana'];
const moreFruits = [ 'orange', 'plum' ];

fruits.push(...moreFruits); // ["apple", "banana", "orange", "plum"]

It's not possible with CSS3. There is a proposed CSS4 selector, $, to do just that, which could look like this (Selecting the li element):

ul $li ul.sub { ... }

See the list of CSS4 Selectors here.

As an alternative, with jQuery, a one-liner you could make use of would be this:

$('ul li:has(ul.sub)').addClass('has_sub');

You could then go ahead and style the li.has_sub in your CSS.

Since this is a pretty old question, and this method hasn't been added (aside from the system() call function) I guess it would be useful to include creating the shell script with the C binary itself. The shell code will be housed inside the file.c source file. Here is an example of code:

#include <stdio.h>
#include <stdlib.h>

#define SHELLSCRIPT "\
#/bin/bash \n\
echo -e \"\" \n\
echo -e \"This is a test shell script inside C code!!\" \n\
read -p \"press <enter> to continue\" \n\
clear\
"

int main() {

system(SHELLSCRIPT);
return 0;
}

Basically, in a nutshell (pun intended), we are defining the script name, fleshing out the script, enclosing them in double quotes (while inserting proper escapes to ignore double quotes in the shell code), and then calling that script's name, which in this example is SHELLSCRIPT using the system() function in main().

This is a small program to get different color on terminal.

#include <stdio.h>

#define KNRM  "\x1B[0m"
#define KRED  "\x1B[31m"
#define KGRN  "\x1B[32m"
#define KYEL  "\x1B[33m"
#define KBLU  "\x1B[34m"
#define KMAG  "\x1B[35m"
#define KCYN  "\x1B[36m"
#define KWHT  "\x1B[37m"

int main()
{
    printf("%sred\n", KRED);
    printf("%sgreen\n", KGRN);
    printf("%syellow\n", KYEL);
    printf("%sblue\n", KBLU);
    printf("%smagenta\n", KMAG);
    printf("%scyan\n", KCYN);
    printf("%swhite\n", KWHT);
    printf("%snormal\n", KNRM);

    return 0;
}

I used following Regex to satisfy for following emails.

[email protected] # Minimum three characters
[email protected] # Accepts Caps as well.
[email protected] # Accepts . before @

Code

<input type="email" pattern="[A-Za-z0-9._%+-]{3,}@[a-zA-Z]{3,}([.]{1}[a-zA-Z]{2,}|[.]{1}[a-zA-Z]{2,}[.]{1}[a-zA-Z]{2,})" />

The problem is that they're all the same exact list in memory. When you use the [x]*n syntax, what you get is a list of n many x objects, but they're all references to the same object. They're not distinct instances, rather, just n references to the same instance.

To make a list of 3 different lists, do this:

x = [[] for i in range(3)]

This gives you 3 separate instances of [], which is what you want

[[]]*n is similar to

l = []
x = []
for i in range(n):
    x.append(l)

While [[] for i in range(3)] is similar to:

x = []
for i in range(n):
    x.append([])   # appending a new list!

In [20]: x = [[]] * 4

In [21]: [id(i) for i in x]
Out[21]: [164363948, 164363948, 164363948, 164363948] # same id()'s for each list,i.e same object


In [22]: x=[[] for i in range(4)]

In [23]: [id(i) for i in x]
Out[23]: [164382060, 164364140, 164363628, 164381292] #different id(), i.e unique objects this time

Here's a solution for you, using only one very tiny and simple image and one automatically generated span element:

CSS

span.stars, span.stars span {
    display: block;
    background: url(stars.png) 0 -16px repeat-x;
    width: 80px;
    height: 16px;
}

span.stars span {
    background-position: 0 0;
}

Image

_{(source: ulmanen.fi)}

Note: do NOT hotlink to the above image! Copy the file to your own server and use it from there.

jQuery

$.fn.stars = function() {
    return $(this).each(function() {
        // Get the value
        var val = parseFloat($(this).html());
        // Make sure that the value is in 0 - 5 range, multiply to get width
        var size = Math.max(0, (Math.min(5, val))) * 16;
        // Create stars holder
        var $span = $('<span />').width(size);
        // Replace the numerical value with stars
        $(this).html($span);
    });
}

If you want to restrict the stars to only half or quarter star sizes, add one of these rows before the var size row:

val = Math.round(val * 4) / 4; /* To round to nearest quarter */
val = Math.round(val * 2) / 2; /* To round to nearest half */

HTML

<span class="stars">4.8618164</span>
<span class="stars">2.6545344</span>
<span class="stars">0.5355</span>
<span class="stars">8</span>

Usage

$(function() {
    $('span.stars').stars();
});

Output

_{(source: ulmanen.fi)}

Demo

http://www.ulmanen.fi/stuff/stars.php

This will probably suit your needs. With this method you don't have to calculate any three quarter or whatnot star widths, just give it a float and it'll give you your stars.

A small explanation on how the stars are presented might be in order.

The script creates two block level span elements. Both of the spans initally get a size of 80px * 16px and a background image stars.png. The spans are nested, so that the structure of the spans looks like this:

<span class="stars">
    <span></span>
</span>

The outer span gets a background-position of 0 -16px. That makes the gray stars in the outer span visible. As the outer span has height of 16px and repeat-x, it will only show 5 gray stars.

The inner span on the other hand has a background-position of 0 0 which makes only the yellow stars visible.

This would of course work with two separate imagefiles, star_yellow.png and star_gray.png. But as the stars have a fixed height, we can easily combine them into one image. This utilizes the CSS sprite technique.

Now, as the spans are nested, they are automatically overlayed over each other. In the default case, when the width of both spans is 80px, the yellow stars completely obscure the grey stars.

But when we adjust the width of the inner span, the width of the yellow stars decreases, revealing the gray stars.

Accessibility-wise, it would have been wiser to leave the float number inside the inner span and hide it with text-indent: -9999px, so that people with CSS turned off would at least see the floating point number instead of the stars.

Hopefully that made some sense.

Updated 2010/10/22

Now even more compact and harder to understand! Can also be squeezed down to a one liner:

$.fn.stars = function() {
    return $(this).each(function() {
        $(this).html($('<span />').width(Math.max(0, (Math.min(5, parseFloat($(this).html())))) * 16));
    });
}

Usually, if you have big python objects it's quite hard to format them. I personally prefer using some tools for that.

Here is python-beautifier - www.cleancss.com/python-beautify that instantly turns your data into customizable style.

Sometime in the future Comment out the following code in web.config

 <!--<system.codedom>
    <compilers>
      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701" />
      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
    </compilers>
  </system.codedom>-->

update the to the following code.

<system.web>
    <authentication mode="None" />
    <compilation debug="true" targetFramework="4.6.1" />
    <httpRuntime targetFramework="4.6.1" />
    <customErrors mode="Off"/>
    <trust level="Full"/>
  </system.web>

It might be not totally related, but since the question mentioned react uses case (and I keep bumping into this SO thread): There is one important aspect of the double arrow function which is not explicitly mentioned here. Only the 'first' arrow(function) gets named (and thus 'distinguishable' by the run-time), any following arrows are anonymous and from React point of view count as a 'new' object on every render.

Thus double arrow function will cause any PureComponent to rerender all the time.

Example

You have a parent component with a change handler as:

handleChange = task => event => { ... operations which uses both task and event... };

and with a render like:

{ tasks.map(task => <MyTask handleChange={this.handleChange(task)}/> }

handleChange then used on an input or click. And this all works and looks very nice. BUT it means that any change that will cause the parent to rerender (like a completely unrelated state change) will also re-render ALL of your MyTask as well even though they are PureComponents.

This can be alleviated many ways such as passing the 'outmost' arrow and the object you would feed it with or writing a custom shouldUpdate function or going back to basics such as writing named functions (and binding the this manually...)

Change the property WindowState to System.Windows.Forms.FormWindowState.Maximized, in some cases if the older answers doesn't works.

So the window will be maximized, and the other parts are in the other answers.

I tried Ninh Pham's solution but it didn't work for me until I tweaked it - see below. Remove contentType and don't encode your json data

$.fn.postJSON = function(url, data) {
    return $.ajax({
            type: 'POST',
            url: url,
            data: data,
            dataType: 'json'
        });

You can use ngHide (or ngShow) directive. It doesn't create child scope as ngIf does.

<div ng-hide="testa">

Adapted from here http://mail.python.org/pipermail/python-list/2000-June/039873.html

from math import *
def erfcc(x):
    """Complementary error function."""
    z = abs(x)
    t = 1. / (1. + 0.5*z)
    r = t * exp(-z*z-1.26551223+t*(1.00002368+t*(.37409196+
        t*(.09678418+t*(-.18628806+t*(.27886807+
        t*(-1.13520398+t*(1.48851587+t*(-.82215223+
        t*.17087277)))))))))
    if (x >= 0.):
        return r
    else:
        return 2. - r

def ncdf(x):
    return 1. - 0.5*erfcc(x/(2**0.5))

If you have .NET v4 installed (so if you have a newer windows or if you apply the windows updates)

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe somefile.cs

or

C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe nomefile.sln

or

C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe nomefile.csproj

It's highly probable that if you have .NET installed, the %FrameworkDir% variable is set, so:

%FrameworkDir%\v4.0.30319\csc.exe ...

%FrameworkDir%\v4.0.30319\msbuild.exe ...

The reject actually takes one parameter: that's the exception that occurred in your code that caused the promise to be rejected. So, when you call reject() the exception value is undefined, hence the "undefined" part in the error that you get.

You do not show the code that uses the promise, but I reckon it is something like this:

var promise = doSth();
promise.then(function() { doSthHere(); });

Try adding an empty failure call, like this:

promise.then(function() { doSthHere(); }, function() {});

This will prevent the error to appear.

However, I would consider calling reject only in case of an actual error, and also... having empty exception handlers isn't the best programming practice.

In a GET request, the request parameters are taken from the query string (the data following the question mark on the URL). For example, the URL http://hostname.com?p1=v1&p2=v2 contains two request parameters - - p1 and p2. In a POST request, the request parameters are taken from both query string and the posted data which is encoded in the body of the request.

This example demonstrates how to include the value of a request parameter in the generated output:

Hello <b><%= request.getParameter("name") %></b>!

If the page was accessed with the URL:

http://hostname.com/mywebapp/mypage.jsp?name=John+Smith

the resulting output would be:

Hello <b>John Smith</b>!

If name is not specified on the query string, the output would be:

Hello <b>null</b>!

This example uses the value of a query parameter in a scriptlet:

<%
    if (request.getParameter("name") == null) {
        out.println("Please enter your name.");
    } else {
        out.println("Hello <b>"+request. getParameter("name")+"</b>!");
    }
%>

Here I get only three specific columns from mainDataTable and use the filter

DataTable checkedParams = mainDataTable.Select("checked = true").CopyToDataTable()
.DefaultView.ToTable(false, "lagerID", "reservePeriod", "discount");

If the InputStream you're using supports mark/reset support, you could also attempt to read the first byte of the stream and then reset it to its original position:

input.mark(1);
final int bytesRead = input.read(new byte[1]);
input.reset();
if (bytesRead != -1) {
    //stream not empty
} else {
    //stream empty
} 

If you don't control what kind of InputStream you're using, you can use the markSupported() method to check whether mark/reset will work on the stream, and fall back to the available() method or the java.io.PushbackInputStream method otherwise.

if(getResult.Key.Equals(default(T)) && getResult.Value.Equals(default(U)))

As others have said, use ArrayList. Here's how:

public class t
{
 private List<Integer> x = new ArrayList<Integer>();

 public void add(int num)
 {
   this.x.add(num);
 }
}

As you can see, your add method just calls the ArrayList's add method. This is only useful if your variable is private (which it is).

For C++ :

I just faced the same issue and I think it is worth mentioning a problem comes up when one use both __stdcall (or WINAPI) and extern "C":

As you know extern "C" removes the decoration so that instead of :

__declspec(dllexport) int Test(void)                        --> dumpbin : ?Test@@YaHXZ

you obtain a symbol name undecorated:

extern "C" __declspec(dllexport) int Test(void)             --> dumpbin : Test

However the _stdcall ( = macro WINAPI, that changes the calling convention) also decorates names so that if we use both we obtain :

   extern "C" __declspec(dllexport) int WINAPI Test(void)   --> dumpbin : _Test@0

and the benefit of extern "C" is lost because the symbol is decorated (with _ @bytes)

Note that this only occurs for x86 architecture because the __stdcall convention is ignored on x64 (msdn : on x64 architectures, by convention, arguments are passed in registers when possible, and subsequent arguments are passed on the stack.).

This is particularly tricky if you are targeting both x86 and x64 platforms.

Two solutions

1. Use a definition file. But this forces you to maintain the state of the def file.

2. the simplest way : define the macro (see msdn) :

#define EXPORT comment(linker, "/EXPORT:" __FUNCTION__ "=" __FUNCDNAME__)

and then include the following pragma in the function body:

#pragma EXPORT

Full Example :

 int WINAPI Test(void)
{
    #pragma EXPORT
    return 1;
}

This will export the function undecorated for both x86 and x64 targets while preserving the __stdcall convention for x86. The __declspec(dllexport) is not required in this case.

Use Ctrl + Shift + F combination for Windows and Linux to search everywhere, it shows preview also.

Use Ctrl + F combination for Windows and Linux to search in current file.

Use Shift + Shift (Double Tap Shift) combination for Windows and Linux to search Project File of Project.

You can create a Date object, and call getTime on it:

new Date(2010, 6, 26).getTime() / 1000

Enumerations in C are basically syntactical sugar for named lists of automatically-sequenced integer values. That is, when you have this code:

int main()
{
    enum Days{Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday};

    Days TheDay = Monday;
}

Your compiler actually spits out this:

int main()
{
    int TheDay = 1; // Monday is the second enumeration, hence 1. Sunday would be 0.
}

Therefore, outputting a C enumeration as a string is not an operation that makes sense to the compiler. If you want to have human-readable strings for these, you will need to define functions to convert from enumerations to strings.

Cleaning my solution caused this problem with Visual Studio 2017. Unloading/reloading projects or more cleaning made no difference. Only thing that worked was closing and restarting Visual Studio.

Normally, encryption functions take

encrypt(const void *ptr, size_t bufferSize);

as arguments. You can pass c_str and length directly:

encrypt(strng.c_str(), strng.length());

This way, extra space is allocated or wasted.

You could use url_for(only_path: false)

To run or convert batch files externally from PowerShell (particularly if you wish to sign all your scheduled task scripts with a certificate) I simply create a PowerShell script, e.g. deletefolders.ps1.

Input the following into the script:

cmd.exe /c "rd /s /q C:\#TEMP\test1"

cmd.exe /c "rd /s /q C:\#TEMP\test2"

cmd.exe /c "rd /s /q C:\#TEMP\test3"

*Each command needs to be put on a new line calling cmd.exe again.

This script can now be signed and run from PowerShell outputting the commands to command prompt / cmd directly.

It is a much safer way than running batch files!

Here is your dataframe:

import pandas as pd
df = pd.DataFrame({
    'A': ['a.1', 'a.2', 'a.3'],
    'B': ['b.1', 'b.2', 'b.3'],
    'C': ['c.1', 'c.2', 'c.3']})

Your answer is in the paragraph "Setting with enlargement" in the section on "Indexing and selecting data" in the documentation on Pandas.

It says:

A DataFrame can be enlarged on either axis via .loc.

So what you need to do is simply one of these two:

df.loc[:, 'D'] = df.loc[:, 'B']
df.loc[:, 'D'] = df['B']

This will save a screenshot and as well return the screenshot too.

-(UIImage *)capture{
    UIGraphicsBeginImageContext(self.view.bounds.size);
    [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *imageView = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    UIImageWriteToSavedPhotosAlbum(imageView, nil, nil, nil); //if you need to save
    return imageView;
}

When I installed: ENU\x64\SQLManagementStudio_x64_ENU.exe

I had to choose the following options to get the management Tools:

1. "New SQL Server stand-alone installation or add features to an existing installation."
2. "Add features to an existing instance of SQL Server 2012"
3. Accept the license.
4. Check the box for "Management Tools - Basic".
5. Wait a long time as it installs.

When I was done I had an option "SQL Server Management Studio" within my Start Menu.

Searching for "Management" pulled it up faster within the Start Menu.

A few options:

(1) Laboriously make an identity-mapping (i.e. do-nothing) dict out of your fieldnames so that csv.DictWriter can convert it back to a list and pass it to a csv.writer instance.

(2) The documentation mentions "the underlying writer instance" ... so just use it (example at the end).

dw.writer.writerow(dw.fieldnames)

(3) Avoid the csv.Dictwriter overhead and do it yourself with csv.writer

Writing data:

w.writerow([d[k] for k in fieldnames])

or

w.writerow([d.get(k, restval) for k in fieldnames])

Instead of the extrasaction "functionality", I'd prefer to code it myself; that way you can report ALL "extras" with the keys and values, not just the first extra key. What is a real nuisance with DictWriter is that if you've verified the keys yourself as each dict was being built, you need to remember to use extrasaction='ignore' otherwise it's going to SLOWLY (fieldnames is a list) repeat the check:

wrong_fields = [k for k in rowdict if k not in self.fieldnames]

============

>>> f = open('csvtest.csv', 'wb')
>>> import csv
>>> fns = 'foo bar zot'.split()
>>> dw = csv.DictWriter(f, fns, restval='Huh?')
# dw.writefieldnames(fns) -- no such animal
>>> dw.writerow(fns) # no such luck, it can't imagine what to do with a list
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\python26\lib\csv.py", line 144, in writerow
    return self.writer.writerow(self._dict_to_list(rowdict))
  File "C:\python26\lib\csv.py", line 141, in _dict_to_list
    return [rowdict.get(key, self.restval) for key in self.fieldnames]
AttributeError: 'list' object has no attribute 'get'
>>> dir(dw)
['__doc__', '__init__', '__module__', '_dict_to_list', 'extrasaction', 'fieldnam
es', 'restval', 'writer', 'writerow', 'writerows']
# eureka
>>> dw.writer.writerow(dw.fieldnames)
>>> dw.writerow({'foo':'oof'})
>>> f.close()
>>> open('csvtest.csv', 'rb').read()
'foo,bar,zot\r\noof,Huh?,Huh?\r\n'
>>>

For JQuery 1.7+ use:

$('input[type=checkbox]').on('change', function() {
  ...
});

I couldn't find a direct GDrive/DropBox solution. I'm also surprised there's no lazy solution for a free ftp host. Windows azure offers a ftp server "FTP connector" that's fairly easy to turn on at: https://portal.azure.com

You can get a free 1 GB account by selecting "View All" machine types during your deployment.

If you want to do it the way the calculator actually does it, use the Babylonian technique. It is explained here and here.

Suppose you want to calculate the square root of 2:

a=2

a1 = (a/2)+1
b1 = a/a1
aminus1 = a1
bminus1 = b1


while (aminus1-bminus1 > 0):
    an = 0.5 * (aminus1 + bminus1)
    bn = a / an
    aminus1 = an
    bminus1 = bn
    print(an,bn,an-bn)

You have no greater security provided because the variables are sent over HTTP POST than you have with variables sent over HTTP GET.

HTTP/1.1 provides us with a bunch of methods to send a request:

• OPTIONS
• GET
• HEAD
• POST
• PUT
• DELETE
• TRACE
• CONNECT

Lets suppose you have the following HTML document using GET:

<html>
<body>
<form action="http://example.com" method="get">
    User: <input type="text" name="username" /><br/>
    Password: <input type="password" name="password" /><br/>
    <input type="hidden" name="extra" value="lolcatz" />
    <input type="submit"/>
</form>
</body>
</html>

What does your browser ask? It asks this:

 GET /?username=swordfish&password=hunter2&extra=lolcatz HTTP/1.1
 Host: example.com
 Connection: keep-alive
 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/ [...truncated]
 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) [...truncated]
 Accept-Encoding: gzip,deflate,sdch
 Accept-Language: en-US,en;q=0.8
 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3

Now lets pretend we changed that request method to a POST:

 POST / HTTP/1.1
 Host: example.com
 Connection: keep-alive
 Content-Length: 49
 Cache-Control: max-age=0
 Origin: null
 Content-Type: application/x-www-form-urlencoded
 Accept: application/xml,application/xhtml+xml,text/ [...truncated]
 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; [...truncated]
 Accept-Encoding: gzip,deflate,sdch
 Accept-Language: en-US,en;q=0.8
 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3

 username=swordfish&password=hunter2&extra=lolcatz

BOTH of these HTTP requests are:

• Not encrypted
• Included in both examples
• Can be evesdroped on, and subject to MITM attacks.
• Easily reproduced by third party, and script bots.

Many browsers do not support HTTP methods other than POST/GET.

Many browsers behaviors store the page address, but this doesn't mean you can ignore any of these other issues.

So to be specific:

Is one inherently more secure then another? I realize that POST doesn't expose information on the URL but is there any real value in that or is it just security through obscurity? What is the best practice here?

This is correct, because the software you're using to speak HTTP tends to store the request variables with one method but not another only prevents someone from looking at your browser history or some other naive attack from a 10 year old who thinks they understand h4x0r1ng, or scripts that check your history store. If you have a script that can check your history store, you could just as easily have one that checks your network traffic, so this entire security through obscurity is only providing obscurity to script kiddies and jealous girlfriends.

Over https, POST data is encoded, but could urls be sniffed by a 3rd party?

Here's how SSL works. Remember those two requests I sent above? Here's what they look like in SSL: (I changed the page to https://encrypted.google.com/ as example.com doesn't respond on SSL).

POST over SSL

q5XQP%RWCd2u#o/T9oiOyR2_YO?yo/3#tR_G7 2_RO8w?FoaObi)
oXpB_y?oO4q?`2o?O4G5D12Aovo?C@?/P/oOEQC5v?vai /%0Odo
QVw#6eoGXBF_o?/u0_F!_1a0A?Q b%TFyS@Or1SR/O/o/_@5o&_o
9q1/?q$7yOAXOD5sc$H`BECo1w/`4?)f!%geOOF/!/#Of_f&AEI#
yvv/wu_b5?/o d9O?VOVOFHwRO/pO/OSv_/8/9o6b0FGOH61O?ti
/i7b?!_o8u%RS/Doai%/Be/d4$0sv_%YD2_/EOAO/C?vv/%X!T?R
_o_2yoBP)orw7H_yQsXOhoVUo49itare#cA?/c)I7R?YCsg ??c'
(_!(0u)o4eIis/S8Oo8_BDueC?1uUO%ooOI_o8WaoO/ x?B?oO@&
Pw?os9Od!c?/$3bWWeIrd_?( `P_C?7_g5O(ob(go?&/ooRxR'u/
T/yO3dS&??hIOB/?/OI?$oH2_?c_?OsD//0/_s%r

GET over SSL

rV/O8ow1pc`?058/8OS_Qy/$7oSsU'qoo#vCbOO`vt?yFo_?EYif)
43`I/WOP_8oH0%3OqP_h/cBO&24?'?o_4`scooPSOVWYSV?H?pV!i
?78cU!_b5h'/b2coWD?/43Tu?153pI/9?R8!_Od"(//O_a#t8x?__
bb3D?05Dh/PrS6_/&5p@V f $)/xvxfgO'q@y&e&S0rB3D/Y_/fO?
_'woRbOV?_!yxSOdwo1G1?8d_p?4fo81VS3sAOvO/Db/br)f4fOxt
_Qs3EO/?2O/TOo_8p82FOt/hO?X_P3o"OVQO_?Ww_dr"'DxHwo//P
oEfGtt/_o)5RgoGqui&AXEq/oXv&//?%/6_?/x_OTgOEE%v (u(?/
t7DX1O8oD?fVObiooi'8)so?o??`o"FyVOByY_ Supo? /'i?Oi"4
tr'9/o_7too7q?c2Pv

(note: I converted the HEX to ASCII, some of it should obviously not be displayable)

The entire HTTP conversation is encrypted, the only visible portion of communication is on the TCP/IP layer (meaning the IP address and connection port information).

So let me make a big bold statement here. Your website is not provided greater security over one HTTP method than it is another, hackers and newbs all over the world know exactly how to do what I've just demonstrated here. If you want security, use SSL. Browsers tend to store history, it's recommended by RFC2616 9.1.1 to NOT use GET to perform an action, but to think that POST provides security is flatly wrong.

The only thing that POST is a security measure towards? Protection against your jealous ex flipping through your browser history. That's it. The rest of the world is logged into your account laughing at you.

To further demonstrate why POST isn't secure, Facebook uses POST requests all over the place, so how can software such as FireSheep exist?

Note that you may be attacked with CSRF even if you use HTTPS and your site does not contain XSS vulnerabilities. In short, this attack scenario assumes that the victim (the user of your site or service) is already logged in and has a proper cookie and then the victim's browser is requested to do something with your (supposedly secure) site. If you do not have protection against CSRF the attacker can still execute actions with the victims credentials. The attacker cannot see the server response because it will be transferred to the victim's browser but the damage is usually already done at that point.

see this http://www.codeproject.com/Articles/3389/Read-write-and-delete-from-registry-with-C

Updated:

You can use RegistryKey class under Microsoft.Win32 namespace.

Some important functions of RegistryKey are as follows:

GetValue       //to get value of a key
SetValue       //to set value to a key
DeleteValue    //to delete value of a key
OpenSubKey     //to read value of a subkey (read-only)
CreateSubKey   //to create new or edit value to a subkey
DeleteSubKey   //to delete a subkey
GetValueKind   //to retrieve the datatype of registry key

I have stumbled across this question and I will submit my answer that I used and worked pretty well. I had a search box that filtered and array of objects and on my search box I used the (ngModelChange)="onChange($event)"

in my .html

<input type="text" [(ngModel)]="searchText" (ngModelChange)="reSearch(newValue)" placeholder="Search">

then in my component.ts

reSearch(newValue: string) {
    //this.searchText would equal the new value
    //handle my filtering with the new value
}

You can also try Mail.dll mail component, it has SSL support, unicode, and multi-national email support:

using(Pop3 pop3 = new Pop3())
{
    pop3.Connect("mail.host.com");           // Connect to server and login
    pop3.Login("user", "password");

    foreach(string uid in pop3.GetAll())
    {
        IMail email = new MailBuilder()
            .CreateFromEml(pop3.GetMessageByUID(uid));
          Console.WriteLine( email.Subject );
    }
    pop3.Close(false);      
}

You can download it here at https://www.limilabs.com/mail

Please note that this is a commercial product I've created.

This flexbox principle also works horizontally

During calculations of flex bases and flexible lengths, auto margins are treated as 0.
Prior to alignment via justify-content and align-self, any positive free space is distributed to auto margins in that dimension.

Setting an automatic left margin for the Last Item will do the work.

.last-item {
  margin-left: auto;
}

Code Example:

.container {_x000D_
  display: flex;_x000D_
  width: 400px;_x000D_
  outline: 1px solid black;_x000D_
}_x000D_
_x000D_
p {_x000D_
  height: 50px;_x000D_
  width: 50px;_x000D_
  margin: 5px;_x000D_
  background-color: blue;_x000D_
}_x000D_
_x000D_
.last-item {_x000D_
  margin-left: auto;_x000D_
}

<div class="container">_x000D_
  <p></p>_x000D_
  <p></p>_x000D_
  <p></p>_x000D_
  <p class="last-item"></p>_x000D_
</div>

Codepen Snippet

This can be very useful for Desktop Footers.

As Envato did here with the company logo.

Codepen Snippet

Use ArrayList.set

list.set(2, "New");

Try

$("#link1").text()

to access the text inside your element. The # indicates you're searching by id. You aren't looking for a child element, so you don't need children(). Instead you want to access the text inside the element your jQuery function returns.

The proper way to do this is like so:

@ECHO off
SET MY_PATH=M:\Dir\^
With Spaces\Sub Folder^
\Dir\Folder
:: calls M:\Dir\With Spaces\Sub Folder\Dir\Folder\hello.bat
CALL "%MY_PATH%\hello.bat"
pause

Use the New Java File classes in Java >=7.

Create the below method and import the necessary libs.

public static void copyFile( File from, File to ) throws IOException {
    Files.copy( from.toPath(), to.toPath() );
} 

Use the created method as below within main:

File dirFrom = new File(fileFrom);
File dirTo = new File(fileTo);

try {
        copyFile(dirFrom, dirTo);
} catch (IOException ex) {
        Logger.getLogger(TestJava8.class.getName()).log(Level.SEVERE, null, ex);
}

NB:- fileFrom is the file that you want to copy to a new file fileTo in a different folder.

Credits - @Scott: Standard concise way to copy a file in Java?

You can use:

objects_all=Class.objects.filter(filter_condition="")

This will return a query set even if it gets one object. If you need exactly one object use:

obj=Class.objects.get(conditon="")

The problem with calling async void is that

you don’t even get the task back. You have no way of knowing when the function’s task has completed. —— Crash course in async and await | The Old New Thing

Here are the three ways to call an async function:

async Task<T> SomethingAsync() { ... return t; }
async Task SomethingAsync() { ... }
async void SomethingAsync() { ... }

In all the cases, the function is transformed into a chain of tasks. The difference is what the function returns.

In the first case, the function returns a task that eventually produces the t.

In the second case, the function returns a task which has no product, but you can still await on it to know when it has run to completion.

The third case is the nasty one. The third case is like the second case, except that you don't even get the task back. You have no way of knowing when the function's task has completed.

The async void case is a "fire and forget": You start the task chain, but you don't care about when it's finished. When the function returns, all you know is that everything up to the first await has executed. Everything after the first await will run at some unspecified point in the future that you have no access to.

Try using

MyClass[] myArray = list.ToArray();

Minimal runnable example

glOrtho: 2D games, objects close and far appear the same size:

glFrustrum: more real-life like 3D, identical objects further away appear smaller:

main.c

#include <stdlib.h>

#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>

static int ortho = 0;

static void display(void) {
    glClear(GL_COLOR_BUFFER_BIT);
    glLoadIdentity();
    if (ortho) {
    } else {
        /* This only rotates and translates the world around to look like the camera moved. */
        gluLookAt(0.0, 0.0, -3.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
    }
    glColor3f(1.0f, 1.0f, 1.0f);
    glutWireCube(2);
    glFlush();
}

static void reshape(int w, int h) {
    glViewport(0, 0, w, h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    if (ortho) {
        glOrtho(-2.0, 2.0, -2.0, 2.0, -1.5, 1.5);
    } else {
        glFrustum(-1.0, 1.0, -1.0, 1.0, 1.5, 20.0);
    }
    glMatrixMode(GL_MODELVIEW);
}

int main(int argc, char** argv) {
    glutInit(&argc, argv);
    if (argc > 1) {
        ortho = 1;
    }
    glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
    glutInitWindowSize(500, 500);
    glutInitWindowPosition(100, 100);
    glutCreateWindow(argv[0]);
    glClearColor(0.0, 0.0, 0.0, 0.0);
    glShadeModel(GL_FLAT);
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glutMainLoop();
    return EXIT_SUCCESS;
}

GitHub upstream.

Compile:

gcc -ggdb3 -O0 -o main -std=c99 -Wall -Wextra -pedantic main.c -lGL -lGLU -lglut

Run with glOrtho:

./main 1

Run with glFrustrum:

./main

Tested on Ubuntu 18.10.

Schema

Ortho: camera is a plane, visible volume a rectangle:

Frustrum: camera is a point,visible volume a slice of a pyramid:

Image source.

Parameters

We are always looking from +z to -z with +y upwards:

glOrtho(left, right, bottom, top, near, far)

• left: minimum x we see
• right: maximum x we see
• bottom: minimum y we see
• top: maximum y we see
• -near: minimum z we see. Yes, this is -1 times near. So a negative input means positive z.
• -far: maximum z we see. Also negative.

Schema:

Image source.

How it works under the hood

In the end, OpenGL always "uses":

glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);

If we use neither glOrtho nor glFrustrum, that is what we get.

glOrtho and glFrustrum are just linear transformations (AKA matrix multiplication) such that:

• glOrtho: takes a given 3D rectangle into the default cube
• glFrustrum: takes a given pyramid section into the default cube

This transformation is then applied to all vertexes. This is what I mean in 2D:

Image source.

The final step after transformation is simple:

• remove any points outside of the cube (culling): just ensure that x, y and z are in [-1, +1]
• ignore the z component and take only x and y, which now can be put into a 2D screen

With glOrtho, z is ignored, so you might as well always use 0.

One reason you might want to use z != 0 is to make sprites hide the background with the depth buffer.

Deprecation

glOrtho is deprecated as of OpenGL 4.5: the compatibility profile 12.1. "FIXED-FUNCTION VERTEX TRANSFORMATIONS" is in red.

So don't use it for production. In any case, understanding it is a good way to get some OpenGL insight.

Modern OpenGL 4 programs calculate the transformation matrix (which is small) on the CPU, and then give the matrix and all points to be transformed to OpenGL, which can do the thousands of matrix multiplications for different points really fast in parallel.

Manually written vertex shaders then do the multiplication explicitly, usually with the convenient vector data types of the OpenGL Shading Language.

Since you write the shader explicitly, this allows you to tweak the algorithm to your needs. Such flexibility is a major feature of more modern GPUs, which unlike the old ones that did a fixed algorithm with some input parameters, can now do arbitrary computations. See also: https://stackoverflow.com/a/36211337/895245

With an explicit GLfloat transform[] it would look something like this:

glfw_transform.c

#include <math.h>
#include <stdio.h>
#include <stdlib.h>

#define GLEW_STATIC
#include <GL/glew.h>

#include <GLFW/glfw3.h>

static const GLuint WIDTH = 800;
static const GLuint HEIGHT = 600;
/* ourColor is passed on to the fragment shader. */
static const GLchar* vertex_shader_source =
    "#version 330 core\n"
    "layout (location = 0) in vec3 position;\n"
    "layout (location = 1) in vec3 color;\n"
    "out vec3 ourColor;\n"
    "uniform mat4 transform;\n"
    "void main() {\n"
    "    gl_Position = transform * vec4(position, 1.0f);\n"
    "    ourColor = color;\n"
    "}\n";
static const GLchar* fragment_shader_source =
    "#version 330 core\n"
    "in vec3 ourColor;\n"
    "out vec4 color;\n"
    "void main() {\n"
    "    color = vec4(ourColor, 1.0f);\n"
    "}\n";
static GLfloat vertices[] = {
/*   Positions          Colors */
     0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f,
    -0.5f, -0.5f, 0.0f, 0.0f, 1.0f, 0.0f,
     0.0f,  0.5f, 0.0f, 0.0f, 0.0f, 1.0f
};

/* Build and compile shader program, return its ID. */
GLuint common_get_shader_program(
    const char *vertex_shader_source,
    const char *fragment_shader_source
) {
    GLchar *log = NULL;
    GLint log_length, success;
    GLuint fragment_shader, program, vertex_shader;

    /* Vertex shader */
    vertex_shader = glCreateShader(GL_VERTEX_SHADER);
    glShaderSource(vertex_shader, 1, &vertex_shader_source, NULL);
    glCompileShader(vertex_shader);
    glGetShaderiv(vertex_shader, GL_COMPILE_STATUS, &success);
    glGetShaderiv(vertex_shader, GL_INFO_LOG_LENGTH, &log_length);
    log = malloc(log_length);
    if (log_length > 0) {
        glGetShaderInfoLog(vertex_shader, log_length, NULL, log);
        printf("vertex shader log:\n\n%s\n", log);
    }
    if (!success) {
        printf("vertex shader compile error\n");
        exit(EXIT_FAILURE);
    }

    /* Fragment shader */
    fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
    glShaderSource(fragment_shader, 1, &fragment_shader_source, NULL);
    glCompileShader(fragment_shader);
    glGetShaderiv(fragment_shader, GL_COMPILE_STATUS, &success);
    glGetShaderiv(fragment_shader, GL_INFO_LOG_LENGTH, &log_length);
    if (log_length > 0) {
        log = realloc(log, log_length);
        glGetShaderInfoLog(fragment_shader, log_length, NULL, log);
        printf("fragment shader log:\n\n%s\n", log);
    }
    if (!success) {
        printf("fragment shader compile error\n");
        exit(EXIT_FAILURE);
    }

    /* Link shaders */
    program = glCreateProgram();
    glAttachShader(program, vertex_shader);
    glAttachShader(program, fragment_shader);
    glLinkProgram(program);
    glGetProgramiv(program, GL_LINK_STATUS, &success);
    glGetProgramiv(program, GL_INFO_LOG_LENGTH, &log_length);
    if (log_length > 0) {
        log = realloc(log, log_length);
        glGetProgramInfoLog(program, log_length, NULL, log);
        printf("shader link log:\n\n%s\n", log);
    }
    if (!success) {
        printf("shader link error");
        exit(EXIT_FAILURE);
    }

    /* Cleanup. */
    free(log);
    glDeleteShader(vertex_shader);
    glDeleteShader(fragment_shader);
    return program;
}

int main(void) {
    GLint shader_program;
    GLint transform_location;
    GLuint vbo;
    GLuint vao;
    GLFWwindow* window;
    double time;

    glfwInit();
    window = glfwCreateWindow(WIDTH, HEIGHT, __FILE__, NULL, NULL);
    glfwMakeContextCurrent(window);
    glewExperimental = GL_TRUE;
    glewInit();
    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
    glViewport(0, 0, WIDTH, HEIGHT);

    shader_program = common_get_shader_program(vertex_shader_source, fragment_shader_source);

    glGenVertexArrays(1, &vao);
    glGenBuffers(1, &vbo);
    glBindVertexArray(vao);
    glBindBuffer(GL_ARRAY_BUFFER, vbo);
    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
    /* Position attribute */
    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(GLfloat), (GLvoid*)0);
    glEnableVertexAttribArray(0);
    /* Color attribute */
    glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));
    glEnableVertexAttribArray(1);
    glBindVertexArray(0);

    while (!glfwWindowShouldClose(window)) {
        glfwPollEvents();
        glClear(GL_COLOR_BUFFER_BIT);

        glUseProgram(shader_program);
        transform_location = glGetUniformLocation(shader_program, "transform");
        /* THIS is just a dummy transform. */
        GLfloat transform[] = {
            0.0f, 0.0f, 0.0f, 0.0f,
            0.0f, 0.0f, 0.0f, 0.0f,
            0.0f, 0.0f, 1.0f, 0.0f,
            0.0f, 0.0f, 0.0f, 1.0f,
        };
        time = glfwGetTime();
        transform[0] = 2.0f * sin(time);
        transform[5] = 2.0f * cos(time);
        glUniformMatrix4fv(transform_location, 1, GL_FALSE, transform);

        glBindVertexArray(vao);
        glDrawArrays(GL_TRIANGLES, 0, 3);
        glBindVertexArray(0);
        glfwSwapBuffers(window);
    }
    glDeleteVertexArrays(1, &vao);
    glDeleteBuffers(1, &vbo);
    glfwTerminate();
    return EXIT_SUCCESS;
}

GitHub upstream.

Compile and run:

gcc -ggdb3 -O0 -o glfw_transform.out -std=c99 -Wall -Wextra -pedantic glfw_transform.c -lGL -lGLU -lglut -lGLEW -lglfw -lm
./glfw_transform.out

Output:

The matrix for glOrtho is really simple, composed only of scaling and translation:

scalex, 0,      0,      translatex,
0,      scaley, 0,      translatey,
0,      0,      scalez, translatez,
0,      0,      0,      1

as mentioned in the OpenGL 2 docs.

The glFrustum matrix is not too hard to calculate by hand either, but starts getting annoying. Note how frustum cannot be made up with only scaling and translations like glOrtho, more info at: https://gamedev.stackexchange.com/a/118848/25171

The GLM OpenGL C++ math library is a popular choice for calculating such matrices. http://glm.g-truc.net/0.9.2/api/a00245.html documents both an ortho and frustum operations.

I think no one has given the correct answer to the question. My working solution is : 1. Just declare another class along with container-fluid class example(.maxx):

 <div class="container-fluid maxx">_x000D_
   <div class="row">_x000D_
     <div class="col-sm-12">_x000D_
     <p>Hello</p>_x000D_
     </div>_x000D_
   </div>_x000D_
  </div>

2. Then using specificity in the css part do this:

.container-fluid.maxx {_x000D_
  padding-left: 0px;_x000D_
  padding-right: 0px; }

This will work 100% and will remove the padding from left and right. I hope this helps.

Since JavaScript FileList is readonly and cannot be manipulated directly,

BEST METHOD

You will have to loop through the input.files while comparing it with the index of the file you want to remove. At the same time, you will use new DataTransfer() to set a new list of files excluding the file you want to remove from the file list.

With this approach, the value of the input.files itself is changed.

removeFileFromFileList(index) {
  const dt = new DataTransfer()
  const input = document.getElementById('files')
  const { files } = input
  for (let i = 0; i < files.length; i++) {
    const file = files[i]
    if (index !== i) dt.items.add(file) // here you exclude the file. thus removing it.
    input.files = dt.files
  }
}

ALTERNATIVE METHOD

Another simple method is to convert the FileList into an array and then splice it.

But this approach will not change the input.files

const input = document.getElementById('files')
// as an array, u have more freedom to transform the file list using array functions.
const fileListArr = Array.from(input.files)
fileListArr.splice(index, 1) // here u remove the file
console.log(fileListArr)

I was curious about which method would be faster:

1. Using Distinct with a custom IEqualityComparer or
2. Using the GroupBy method described by Cuong Le.

I found that depending on the size of the input data and the number of groups, the Distinct method can be a lot more performant. (as the number of groups tends towards the number of elements in the list, distinct runs faster).

Code runs in LinqPad!

    void Main()
    {
        List<C> cs = new List<C>();
        foreach(var i in Enumerable.Range(0,Int16.MaxValue*1000))
        {
            int modValue = Int16.MaxValue; //vary this value to see how the size of groups changes performance characteristics. Try 1, 5, 10, and very large numbers
            int j = i%modValue; 
            cs.Add(new C{I = i, J = j});
        }
        cs.Count ().Dump("Size of input array");

        TestGrouping(cs);
        TestDistinct(cs);
    }

    public void TestGrouping(List<C> cs)
    {
        Stopwatch sw = Stopwatch.StartNew();
        sw.Restart();
        var groupedCount  = cs.GroupBy (o => o.J).Select(s => s.First()).Count();
        groupedCount.Dump("num groups");
        sw.ElapsedMilliseconds.Dump("elapsed time for using grouping");
    }

    public void TestDistinct(List<C> cs)
    {
        Stopwatch sw = Stopwatch.StartNew();
        var distinctCount = cs.Distinct(new CComparerOnJ()).Count ();
        distinctCount.Dump("num distinct");
        sw.ElapsedMilliseconds.Dump("elapsed time for using distinct");
    }

    public class C
    {
        public int I {get; set;}
        public int J {get; set;}
    }

    public class CComparerOnJ : IEqualityComparer<C>
    {
        public bool Equals(C x, C y)
        {
            return x.J.Equals(y.J);
        }

        public int GetHashCode(C obj)
        {
            return obj.J.GetHashCode();
        }
    }

You might be able to get what you want by using Console2 with Putty or Plink.

Ensure you run Visual Studio as an administrator.

The important thing of table-layout: fixed is that the column widths are determined by the first row of the table.

So

if your table structure is as follow (standard table structure)

<table>
  <thead>
      <tr>
          <th> First column </th>
          <th> Second column </th>
          <th> Third column </th>        
      </tr>
  </thead>

   <tbody>
      <tr>
          <td> First column </td>
          <td> Second column </td>
          <td> Third column </td>        
      </tr>
  </tbody>

if you would like to give a width to second column then

<style> 
    table{
        table-layout:fixed;
        width: 100%;
    }

    table tr th:nth-child(2){
       width: 60%;
     }

</style>

Please look that we style the th not the td.

Can we guarantee it will not die?

As long there is no reference returned, it's perfectly fine to do so. words will be moved to the variable receiving the result.

The local variable will go out of scope. after it was moved (or copied).

There is a very simple way to clear a python list. Use del list_name[:].

For example:

>>> a = [1, 2, 3]
>>> b = a
>>> del a[:]
>>> print a, b
[] []

Try going to IIS and checking to make sure the App Pool you are using is started. A lot of times, you will produce an error that shuts down the app pool. You just need to right click and Start and you should be good to go.

<input type="text" name="myinput" id="myinput" onkeypress="return isNumber(event);" />

and in the js:

function isNumber(e){
    e = e || window.event;
    var charCode = e.which ? e.which : e.keyCode;
    return /\d/.test(String.fromCharCode(charCode));
}

or you can write it in a complicated bu useful way:

<input onkeypress="return /\d/.test(String.fromCharCode(((event||window.event).which||(event||window.event).which)));" type="text" name="myinput" id="myinput" />

Note:cross-browser and regex in literal.

You can try adding ANDROID_PATH

export ANDROID_HOME=/Users/<username>/Library/Android/sdk/
export PATH=$PATH:$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools

  System.IO.StreamReader reader = new System.IO.StreamReader(HttpContext.Current.Request.InputStream);
  reader.BaseStream.Position = 0;
  string requestFromPost = reader.ReadToEnd();

Its possible write a file directly to the DB server that hosts your database, and that will change all along with the execution of your PL/SQL program.

This uses the Oracle directory TMP_DIR; you have to declare it, and create the below procedure:

CREATE OR REPLACE PROCEDURE write_log(p_log varchar2)
  -- file mode; thisrequires
--- CREATE OR REPLACE DIRECTORY TMP_DIR as '/directory/where/oracle/can/write/on/DB_server/';
AS
  l_file utl_file.file_type;
BEGIN
  l_file := utl_file.fopen('TMP_DIR', 'my_output.log', 'A');
  utl_file.put_line(l_file, p_log);
  utl_file.fflush(l_file);
  utl_file.fclose(l_file);
END write_log;
/

Here is how to use it:

1) Launch this from your SQL*PLUS client:

BEGIN
  write_log('this is a test');
  for i in 1..100 loop
    DBMS_LOCK.sleep(1);
    write_log('iter=' || i);
  end loop;
  write_log('test complete');
END;
/

2) on the database server, open a shell and

    tail -f -n500 /directory/where/oracle/can/write/on/DB_server/my_output.log

You don't need to use a type assertion, instead just use the %v format specifier with Sprintf:

hostAndPort := fmt.Sprintf("%v:%v", arguments["<host>"], arguments["<port>"])

/usr/sbin/ifconfig -a | awk 'BEGIN { count=0; } { if ( $1 ~ /inet/ ) { count++; if( count==2 ) { print $2; } } }'

This will list down the exact ip address for the machine

There are two options. The first (and better) one is using the Fetch as Google option in Webmaster Tools that Mike Flynn commented about. Here are detailed instructions:

1. Go to: https://www.google.com/webmasters/tools/ and log in
2. If you haven't already, add and verify the site with the "Add a Site" button
3. Click on the site name for the one you want to manage
4. Click Crawl -> Fetch as Google
5. Optional: if you want to do a specific page only, type in the URL
6. Click Fetch
7. Click Submit to Index
8. Select either "URL" or "URL and its direct links"
9. Click OK and you're done.

With the option above, as long as every page can be reached from some link on the initial page or a page that it links to, Google should recrawl the whole thing. If you want to explicitly tell it a list of pages to crawl on the domain, you can follow the directions to submit a sitemap.

Your second (and generally slower) option is, as seanbreeden pointed out, submitting here: http://www.google.com/addurl/

Update 2019:

1. Login to - Google Search Console
2. Add a site and verify it with the available methods.
3. After verification from the console, click on URL Inspection.
4. In the Search bar on top, enter your website URL or custom URLs for inspection and enter.
5. After Inspection, it'll show an option to Request Indexing
6. Click on it and GoogleBot will add your website in a Queue for crawling.

The z-index property only works on elements with a position value other than static (e.g. position: absolute;, position: relative;, or position: fixed).

There is also position: sticky; that is supported in Firefox, is prefixed in Safari, worked for a time in older versions of Chrome under a custom flag, and is under consideration by Microsoft to add to their Edge browser.

Important
For regular positioning, be sure to include position: relative on the elements where you also set the z-index. Otherwise, it won't take effect.

Use array_shift function

$myarray = array_shift($myarray);

This will move array elements one level up and you can access any array element without using [0] key

echo $myarray['email'];  

will show [email protected]

document.ready (jQuery) document.ready will execute right after the HTML document is loaded property, and the DOM is ready.

DOM: The Document Object Model (DOM) is a cross-platform and language-independent convention for representing and interacting with objects in HTML, XHTML and XML documents.

$(document).ready(function()
{
   // executes when HTML-Document is loaded and DOM is ready
   alert("(document).ready was called - document is ready!");
});

window.load (Built-in JavaScript) The window.load however will wait for the page to be fully loaded, this includes inner frames, images etc. * window.load is a built-in JavaScript method, it is known to have some quirks in old browsers (IE6, IE8, old FF and Opera versions) but will generally work in all of them.

window.load can be used in the body's onload event like this (but I would strongly suggest you avoid mixing code like this in the HTML, as it is a source for confusion later on):

$(window).load(function() 
{
   // executes when complete page is fully loaded, including all frames, objects and images
   alert("(window).load was called - window is loaded!");
});

If you need to pair a string and an int, then how about a Map?

static Map<String, Integer> icons = new HashMap<String, Integer>();

static {
    icons.add("icon1", R.drawable.icon);
    icons.add("icon2", R.drawable.othericon);
    icons.add("someicon", R.drawable.whatever);
}

You can manually set xticks (and yticks) using pyplot.xticks:

import matplotlib.pyplot as plt
import numpy as np

x = np.array([0,1,2,3])
y = np.array([20,21,22,23])
my_xticks = ['John','Arnold','Mavis','Matt']
plt.xticks(x, my_xticks)
plt.plot(x, y)
plt.show()

To answer your question, these should work as long as:

• Your HTTP server passes these values along to PHP (I don't know any that don't)
• You're not accessing the script via command line (CLI)

But, if I remember correctly, these values can be faked to an extent, so it's best not to rely on them.

My personal preference is to set the domain name as an environment variable in the apache2 virtual host:

# Virtual host
setEnv DOMAIN_NAME example.com

And read it in PHP:

// PHP
echo getenv(DOMAIN_NAME);

This, however, isn't applicable in all circumstances.

Create a shortcut with something like this as the "Target":

powershell.exe -command "& 'C:\A path with spaces\MyScript.ps1' -MyArguments blah"

class="nav-link {{ \Route::current()->getName() == 'panel' ? 'active' : ''}}"

SELECT employee_number, course_code, MAX(course_completion_date) AS max_date
FROM employee_course_completion
WHERE course_code IN ('M910303', 'M91301R', 'M91301P')
GROUP BY employee_number, course_code

I had the same problem and this is my solution. I had the following code:

se.GiftDescription = rs.getString(1);
se.GiftAmount = rs.getInt(2);

And I changed it to:

se.GiftDescription = rs.getString("DESCRIPTION");
se.GiftAmount = rs.getInt("AMOUNT");

And the problem was, after I restarted my PC, the column positions changed. That's why I got this error.

The answers here are all quite old.

In the HTML5 world, you should the use onpopstate event.

window.onpopstate = function(event)
{
    alert("location: " + document.location + ", state: " + JSON.stringify(event.state));
};

Or:

window.addEventListener('popstate', function(event)
{
    alert("location: " + document.location + ", state: " + JSON.stringify(event.state));
});

The latter snippet allows multiple event handlers to exist, whereas the former will replace any existing handler which may cause hard-to-find bugs.

Late to the party, but here is another approach:

function cast_to_number($input) {
    if(is_float($input) || is_int($input)) {
        return $input;
    }
    if(!is_string($input)) {
        return false;
    }
    if(preg_match('/^-?\d+$/', $input)) {
        return intval($input);
    }
    if(preg_match('/^-?\d+\.\d+$/', $input)) {
        return floatval($input);
    }
    return false;
}

cast_to_number('123.45');       // (float) 123.45
cast_to_number('-123.45');      // (float) -123.45
cast_to_number('123');          // (int) 123
cast_to_number('-123');         // (int) -123
cast_to_number('foo 123 bar');  // false

The solution is much simpler than that. You simply need to remove three files from the project UNC Path.

Navigate to your solution's UNC Path.

Example: C:\Users\Your User Name\Documents\Visual Studio 2015\Projects\Your Project Folder

Then permanently delete ("SHIFT + DEL") the .git* files and folder. There are two files and one folder, which may be hidden so ensure you have your folders and search options > View > show hidden files, folder, and drives (Radio Button) Selected.

The files to permanently delete are:

.gitignore (file)

.gitattributes (file)

.git (folder)

Reopen Visual Studio and there is no more relationship to the Git Source Control. If you wanted to take it as far as removing it from the registry as mentioned above, you could, but that shouldn't be necessary aside from the "house keeping" of your machine.

Reason of the error is wrong initialization of the mysqli object. True construction would be like this:

$DBConnect = new mysqli("localhost","root","","Ladle");

The best use case for an external table in the hive is when you want to create the table from a file either CSV or text

If the toplevel folder is known you can just write something like this:

for dir in `ls $YOUR_TOP_LEVEL_FOLDER`;
do
    for subdir in `ls $YOUR_TOP_LEVEL_FOLDER/$dir`;
    do
      $(PLAY AS MUCH AS YOU WANT);
    done
done

On the $(PLAY AS MUCH AS YOU WANT); you can put as much code as you want.

Note that I didn't "cd" on any directory.

Cheers,

See the Express docs as well as the Node docs for https.createServer (which is what express recommends to use):

var privateKey = fs.readFileSync( 'privatekey.pem' );
var certificate = fs.readFileSync( 'certificate.pem' );

https.createServer({
    key: privateKey,
    cert: certificate
}, app).listen(port);

Other options for createServer are at: http://nodejs.org/api/tls.html#tls_tls_createserver_options_secureconnectionlistener

To disable all access to sub dirs (safest) use:

<Directory full-path-to/USERS>
     Order Deny,Allow
     Deny from All
 </Directory>

If you want to block only PHP files from being served directly, then do:

1 - Make sure you know what file extensions the server recognizes as PHP (and dont' allow people to override in htaccess). One of my servers is set to:

# Example of existing recognized extenstions:
AddType application/x-httpd-php .php .phtml .php3

2 - Based on the extensions add a Regular Expression to FilesMatch (or LocationMatch)

 <Directory full-path-to/USERS>
     <FilesMatch "(?i)\.(php|php3?|phtml)$">
            Order Deny,Allow
            Deny from All
    </FilesMatch>
 </Directory>

Or use Location to match php files (I prefer the above files approach)

<LocationMatch "/USERS/.*(?i)\.(php3?|phtml)$">
     Order Deny,Allow
     Deny from All
</LocationMatch>

As others have mentioned, and counter to what the method name would imply, writelines does not add line separators. This is a textbook case for a generator. Here is a contrived example:

def item_generator(things):
    for item in things:
        yield item
        yield '\n'

def write_things_to_file(things):
    with open('path_to_file.txt', 'wb') as f:
        f.writelines(item_generator(things))

Benefits: adds newlines explicitly without modifying the input or output values or doing any messy string concatenation. And, critically, does not create any new data structures in memory. IO (writing to a file) is when that kind of thing tends to actually matter. Hope this helps someone!

I wrote the following code that works fine. But I think it only works with .wav format.

public static synchronized void playSound(final String url) {
  new Thread(new Runnable() {
  // The wrapper thread is unnecessary, unless it blocks on the
  // Clip finishing; see comments.
    public void run() {
      try {
        Clip clip = AudioSystem.getClip();
        AudioInputStream inputStream = AudioSystem.getAudioInputStream(
          Main.class.getResourceAsStream("/path/to/sounds/" + url));
        clip.open(inputStream);
        clip.start(); 
      } catch (Exception e) {
        System.err.println(e.getMessage());
      }
    }
  }).start();
}

If you're on OpenWrt or using some old version of wget which doesn't gives you -i option:

#!/bin/bash
input="text_file.txt"
while IFS= read -r line
do
  wget $line
done < "$input"

Furthermore, if you don't have wget, you can use curl or whatever you use for downloading individual files.

Answer https://stackoverflow.com/a/21369918/2526049 from dcodesmith has a side effect that turns all types of lists numeric. <ol type="a"> will show 1. 2. 3. 4. rather than a. b. c. d.

ol {
  margin: 0 0 1.5em;
  padding: 0;
  counter-reset: item;
}

ol > li {
  margin: 0;
  padding: 0 0 0 2em;
  text-indent: -2em;
  list-style-type: none;
  counter-increment: item;
}

ol > li:before {
  display: inline-block;
  width: 1em;
  padding-right: 0.5em;
  font-weight: bold;
  text-align: right;
  content: counter(item) ".";
}

/* Add support for non-numeric lists */

ol[type="a"] > li:before {
  content: counter(item, lower-alpha) ".";
}
ol[type="i"] > li:before {
  content: counter(item, lower-roman) ".";
}

The above code adds support for lowercase letters, lowercase roman numerals. At the time of writing browsers do not differentiate between upper and lower case selectors for type so you can only pick uppercase or lowercase for your alternate ol types I guess.

Historically in C, if you omitted a datatype "int" was assumed. So "unsigned" is a shorthand for "unsigned int". This has been considered bad practice for a long time, but there is still a fair amount of code out there that uses it.

This one is much easie.

Threading.Thread.Sleep(3000)

I also like to build locators from up to bottom like:

//div[contains(@class,'btn-group')][./button[contains(.,'Arcade Reader')]]/button[@name='settings']

It's pretty simple, as we just search btn-group with button[contains(.,'Arcade Reader')] and get it's button[@name='settings']

That's just another option to build xPath locators

What is the profit of searching wrapper element: you can return it by method (example in java) and just build selenium constructions like:

getGroupByName("Arcade Reader").find("button[name='settings']");
getGroupByName("Arcade Reader").find("button[name='delete']");

or even simplify more

getGroupButton("Arcade Reader", "delete").click();

I've found some useful hacks on this:

Using JS how can I stop child Iframes from redirecting or at least prompt users about the redirect

http://www.codinghorror.com/blog/2009/06/we-done-been-framed.html

http://coderrr.wordpress.com/2009/02/13/preventing-frame-busting-and-click-jacking-ui-redressing/

The next approach work to me with Visual Studio 2013 Update 4 1- From Solution Explorer right click on References then select add references 2- Assemblies > Framework > System.Data.OracleClient > OK and after that you free to add using System.Data.OracleClient in your application and deal with database like you do with Sql Server database except changing the prefix from Sql to Oracle as in SqlCommand become OracleCommand for example to link to Oracle XE

OracleConnection oraConnection = new OracleConnection(@"Data Source=XE; User ID=system; Password=*myPass*");
public void Open()
{
if (oraConnection.State != ConnectionState.Open)
{
oraConnection.Open();
}
}
public void Close()
{
if (oraConnection.State == ConnectionState.Open)
{
oraConnection.Close();
}}

and to execute some command like INSERT, UPDATE, or DELETE using stored procedure we can use the following method

public void ExecuteCMD(string storedProcedure, OracleParameter[] param)
{
OracleCommand oraCmd = new OracleCommand();
oraCmd,CommandType = CommandType.StoredProcedure;
oraCmd.CommandText = storedProcedure;
oraCmd.Connection = oraConnection;

if(param!=null)
{
oraCmd.Parameters.AddRange(param);
}
try
{
oraCmd.ExecuteNoneQuery();
}
catch (Exception)
{
MessageBox.Show("Sorry We've got Unknown Error","Connection Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
}

The best practice is to explicitly list the columns:

Insert Into TableName(col1, col2,col2) Values(?, ?, ?)

Otherwise, your original insert will break if you add another column to your table.

with cursor for loop (user = 'TRANEE', table = 'D')

declare
    constr all_constraints.constraint_name%TYPE;
begin
    for constr in
        (select constraint_name from all_constraints
        where table_name = 'D'
        and owner = 'TRANEE')
    loop
        execute immediate 'alter table D disable constraint '||constr.constraint_name;
    end loop;
end;
/

(If you change disable to enable, you can make all constraints enable)

I just register one account on developers.google.com and get a token for call a Maps API, and just disable that like this (scrollwheel: false):

    var map;
    function initMap() {
        map = new google.maps.Map(document.getElementById('container_google_maps'), {
            center: {lat: -34.397, lng: 150.644},
            zoom: 8,
            scrollwheel: false
        });
    }

probably it is better to use NSString and load html document as follows:

Objective-C

NSString *htmlFile = [[NSBundle mainBundle] pathForResource:@"sample" ofType:@"html"];
NSString* htmlString = [NSString stringWithContentsOfFile:htmlFile encoding:NSUTF8StringEncoding error:nil];
[webView loadHTMLString:htmlString baseURL: [[NSBundle mainBundle] bundleURL]];

Swift

let htmlFile = NSBundle.mainBundle().pathForResource("fileName", ofType: "html")
let html = try? String(contentsOfFile: htmlFile!, encoding: NSUTF8StringEncoding)
webView.loadHTMLString(html!, baseURL: nil) 

Swift 3 has few changes:

let htmlFile = Bundle.main.path(forResource: "intro", ofType: "html")
let html = try? String(contentsOfFile: htmlFile!, encoding: String.Encoding.utf8)
webView.loadHTMLString(html!, baseURL: nil)

Did you try?

Also check that the resource was found by pathForResource:ofType:inDirectory call.

I would say that the easiest way is to use transparent background image.

http://jsfiddle.net/m48nH/

background: url("http://musescore.org/sites/musescore.org/files/blue-translucent.png") repeat top left;

Use the PS command in a little different way to ignore child process as well:

ps -eaf | grep -v grep | grep $PROCESS | grep -v $$

Rephrasing Yuri, Fábio, and Frosts answers for the Django noob (i.e. me) - almost certainly a simplification, but a good starting point?

• render_to_response() is the "original", but requires you putting context_instance=RequestContext(request) in nearly all the time, a PITA.

• direct_to_template() is designed to be used just in urls.py without a view defined in views.py but it can be used in views.py to avoid having to type RequestContext

• render() is a shortcut for render_to_response() that automatically supplies context_instance=Request.... Its available in the django development version (1.2.1) but many have created their own shortcuts such as this one, this one or the one that threw me initially, Nathans basic.tools.shortcuts.py