A GitHub's article on line endings is commonly mentioned when talking about this topic.

My personal experience with using the often recommended core.autocrlf config setting was very mixed.

I'm using Windows with Cygwin, dealing with both Windows and UNIX projects at different times. Even my Windows projects sometimes use bash shell scripts, which require UNIX (LF) line endings.

Using GitHub's recommended core.autocrlf setting for Windows, if I check out a UNIX project (which does work perfectly on Cygwin - or maybe I'm contributing to a project that I use on my Linux server), the text files are checked out with Windows (CRLF) line endings, creating problems.

Basically, for a mixed environment like I have, setting the global core.autocrlf to any of the options will not work well in some cases. This option might be set on a local (repository) git config, but even that wouldn't be good enough for a project that contains both Windows- and UNIX-related stuff (e.g. I have a Windows project with some bash utility scripts).

The best choice I've found is to create per-repository .gitattributes files. The GitHub article mentions it.
Example from that article:

# Set the default behavior, in case people don't have core.autocrlf set.
* text=auto

# Explicitly declare text files you want to always be normalized and converted
# to native line endings on checkout.
*.c text
*.h text

# Declare files that will always have CRLF line endings on checkout.
*.sln text eol=crlf

# Denote all files that are truly binary and should not be modified.
*.png binary
*.jpg binary

In one of my project's repository:

* text=auto

*.txt         text eol=lf
*.xml         text eol=lf
*.json        text eol=lf
*.properties  text eol=lf
*.conf        text eol=lf

*.awk  text eol=lf
*.sed  text eol=lf
*.sh   text eol=lf

*.png  binary
*.jpg  binary

*.p12  binary

It's a bit more things to set up, but do it once per project, and any contributor on any OS should have no troubles with line endings when working with this project.

Anyone who is still stuck - follow the instructions on this page.

Basically:

1. Follow the steps as initially described by AWS.

   1. Open SSH as normal.
   2. source activate python3
   3. Jupyter Notebook

2. Don't cut and paste anything. Instead open a new terminal window without closing the first one.

3. In the new window enter enter the SSH command as described in the above link.

4. Open a web browser and go to http://127.0.0.1:8157

The fileinput module has an inplace mode for writing changes to the file you are processing without using temporary files etc. The module nicely encapsulates the common operation of looping over the lines in a list of files, via an object which transparently keeps track of the file name, line number etc if you should want to inspect them inside the loop.

from fileinput import FileInput
for line in FileInput("file", inplace=1):
    line = line.replace("foobar", "bar")
    print(line)

I've expanded on @Stuart Axon's idea to add two-way binding for the file input (i.e. allow resetting the input by resetting the model value back to null):

app.directive('bindFile', [function () {
    return {
        require: "ngModel",
        restrict: 'A',
        link: function ($scope, el, attrs, ngModel) {
            el.bind('change', function (event) {
                ngModel.$setViewValue(event.target.files[0]);
                $scope.$apply();
            });

            $scope.$watch(function () {
                return ngModel.$viewValue;
            }, function (value) {
                if (!value) {
                    el.val("");
                }
            });
        }
    };
}]);

Demo

First, you're missing some parentheses in your conditional:

if ($("#about").hasClass("opened")) {
  $("#about").animate({right: "-700px"}, 2000);
}

But you can also simplify this to:

$('#about.opened').animate(...);

If #about doesn't have the opened class, it won't animate.

If the problem is with the animation itself, we'd need to know more about your element positioning (absolute? absolute inside relative parent? does the parent have layout?)

No, there is no difference. But I prefer using int[] array as it is more readable.

my @array = stat($filehandle);

The modification time is stored in Unix format in $array[9].

Or explicitly:

my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size,
    $atime, $mtime, $ctime, $blksize, $blocks) = stat($filepath);

  0 dev      Device number of filesystem
  1 ino      inode number
  2 mode     File mode  (type and permissions)
  3 nlink    Number of (hard) links to the file
  4 uid      Numeric user ID of file's owner
  5 gid      Numeric group ID of file's owner
  6 rdev     The device identifier (special files only)
  7 size     Total size of file, in bytes
  8 atime    Last access time in seconds since the epoch
  9 mtime    Last modify time in seconds since the epoch
 10 ctime    inode change time in seconds since the epoch
 11 blksize  Preferred block size for file system I/O
 12 blocks   Actual number of blocks allocated

The epoch was at 00:00 January 1, 1970 GMT.

More information is in stat.

alias chkconfig=sysv-rc-conf
chkconfig --list

syntax

sysv-rc-conf command line usage:  

        sysv-rc-conf --list [service name]
        sysv-rc-conf [--level <runlevels>] <service name> <on|off>

There seems to be an error in your array syntax so assuming you mean an array as opposed to an object, Array.splice is your friend here:

someArray = [{name:"Kristian", lines:"2,5,10"}, {name:"John", lines:"1,19,26,96"}];
someArray.splice(1,1)

You need a section in your file:

[My Section]
path1 = D:\test1\first
path2 = D:\test2\second
path3 = D:\test2\third

Then, read the properties:

import ConfigParser

config = ConfigParser.ConfigParser()
config.readfp(open(r'abc.txt'))
path1 = config.get('My Section', 'path1')
path2 = config.get('My Section', 'path2')
path3 = config.get('My Section', 'path3')

The best way that I found to handle this issue is (replace 65px with your fixed element height):

div:target {
  padding-top: 65px; 
  margin-top: -65px;
}

If you do not like to use the target selector you can also do it in this way:

.my-target {
    padding-top: 65px;
    margin-top: -65px;
}

Note: this example will not work if the target element have a backgound color that differant from his parent. for example:

<div style="background-color:red;height:100px;"></div>
<div class="my-target" style="background-color:green;height:100px;"></div>

in this case the green color of my-target element will overwrite his parent red element in 65px. I did not find any pure CSS solution to handle this issue but if you do not have another background color this solution is the best.

You basically have four potential solutions to fix a "javax.net.ssl.SSLHandshakeException: " exception on Android

1. Trust all certificates. Don't do this, unless you really know what you're doing.
2. Create a custom SSLSocketFactory that trusts only your certificate. This works as long as you know exactly which servers you're going to connect to, but as soon as you need to connect to a new server with a different SSL certificate, you'll need to update your app.
3. Create a Keystore file that contains Android's "master list" of certificates, then add your own. If any of those certs expire down the road, you are responsible for updating them in your app. I can't think of a reason to do this.
4. Create a custom SSLSocketFactory that uses the built-in certificate KeyStore, but falls back on an alternate KeyStore for anything that fails to verify with the default. This is well explained in click here

Also, I want to elaborate more to point number 1. We can selectively skip some domain using manifest network config as explain:

1. Create a file "network_security_config.xml" in xml folder in res folder with following content.

      <network-security-config xmlns:tools="http://schemas.android.com/tools"
        xmlns:android="http://schemas.android.com/apk/res/android">
            <domain-config>
             <domain includeSubdomains="true">191.1.1.0</domain>
             <domain includeSubdomains="true">your_domain</domain>
            <trust-anchors>
                <certificates src="system" />
                <certificates src="user" />
            </trust-anchors>
        </domain-config>
    </network-security-config>
   

2. Add "network_security_config.xml" to application tag in manifest as:

   android:networkSecurityConfig="@xml/network_security_config"

Thats it..done!!. You successfully skipped the SSL certificate.

Try this, but I don't think it will work because you're not supposed to be able to change this

Put this line in an htaccess file in the directory you want the setting to be enabled:

php_value allow_url_fopen On

Note that this setting will only apply to PHP file's in the same directory as the htaccess file.

As an alternative to using url_fopen, try using curl.

A simple example could be,

    import tensorflow as tf
    import numpy as np
    a=tf.random_normal([2,3],0.0,1.0,dtype=tf.float32)  #sampling from a std normal
    print(type(a))
    #<class 'tensorflow.python.framework.ops.Tensor'>
    tf.InteractiveSession()  # run an interactive session in Tf.

n now if we want this tensor a to be converted into a numpy array

    a_np=a.eval()
    print(type(a_np))
    #<class 'numpy.ndarray'>

As simple as that!

This is the way i calculated the slope: Source: http://classroom.synonym.com/calculate-trendline-2709.html

class Program
    {
        public double CalculateTrendlineSlope(List<Point> graph)
        {
            int n = graph.Count;
            double a = 0;
            double b = 0;
            double bx = 0;
            double by = 0;
            double c = 0;
            double d = 0;
            double slope = 0;

            foreach (Point point in graph)
            {
                a += point.x * point.y;
                bx = point.x;
                by = point.y;
                c += Math.Pow(point.x, 2);
                d += point.x;
            }
            a *= n;
            b = bx * by;
            c *= n;
            d = Math.Pow(d, 2);

            slope = (a - b) / (c - d);
            return slope;
        }
    }

    class Point
    {
        public double x;
        public double y;
    }

Like the accepted answer well explained by lhunath, you can use

command > >(tee -a stdout.log) 2> >(tee -a stderr.log >&2)

Beware than if you use bash you could have some issue.

Let me take the matthew-wilcoxson exemple.

And for those who "seeing is believing", a quick test:

(echo "Test Out";>&2 echo "Test Err") > >(tee stdout.log) 2> >(tee stderr.log >&2)

Personally, when I try, I have this result :

user@computer:~$ (echo "Test Out";>&2 echo "Test Err") > >(tee stdout.log) 2> >(tee stderr.log >&2)
user@computer:~$ Test Out
Test Err

Both message does not appear at the same level. Why Test Out seem to be put like if it is my previous command ?
Prompt is on a blank line, let me think the process is not finished, and when I press Enter this fix it.
When I check the content of the files, it is ok, redirection works.

Let take another test.

function outerr() {
  echo "out"     # stdout
  echo >&2 "err" # stderr
}

user@computer:~$ outerr
out
err

user@computer:~$ outerr >/dev/null
err

user@computer:~$ outerr 2>/dev/null
out

Trying again the redirection, but with this function.

function test_redirect() {
  fout="stdout.log"
  ferr="stderr.log"
  echo "$ outerr"
  (outerr) > >(tee "$fout") 2> >(tee "$ferr" >&2)
  echo "# $fout content :"
  cat "$fout"
  echo "# $ferr content :"
  cat "$ferr"
}

Personally, I have this result :

user@computer:~$ test_redirect
$ outerr
# stdout.log content :
out
out
err
# stderr.log content :
err
user@computer:~$

No prompt on a blank line, but I don't see normal output, stdout.log content seem to be wrong, only stderr.log seem to be ok. If I relaunch it, output can be different...

So, why ?

Because, like explained here :

Beware that in bash, this command returns as soon as [first command] finishes, even if the tee commands are still executed (ksh and zsh do wait for the subprocesses)

So, if you use bash, prefer use the better exemple given in this other answer :

{ { outerr | tee "$fout"; } 2>&1 1>&3 | tee "$ferr"; } 3>&1 1>&2

It will fix the previous issues.

Now, the question is, how to retrieve exit status code ?
$? does not works.
I have no found better solution than switch on pipefail with set -o pipefail (set +o pipefail to switch off) and use ${PIPESTATUS[0]} like this

function outerr() {
  echo "out"
  echo >&2 "err"
  return 11
}

function test_outerr() {
  local - # To preserve set option
  ! [[ -o pipefail ]] && set -o pipefail; # Or use second part directly
  local fout="stdout.log"
  local ferr="stderr.log"
  echo "$ outerr"
  { { outerr | tee "$fout"; } 2>&1 1>&3 | tee "$ferr"; } 3>&1 1>&2
  # First save the status or it will be lost
  local status="${PIPESTATUS[0]}" # Save first, the second is 0, perhaps tee status code.
  echo "==="
  echo "# $fout content :"
  echo "<==="
  cat "$fout"
  echo "===>"
  echo "# $ferr content :"
  echo "<==="
  cat "$ferr"
  echo "===>"
  if (( status > 0 )); then
    echo "Fail $status > 0"
    return "$status" # or whatever
  fi
}

user@computer:~$ test_outerr
$ outerr
err
out
===
# stdout.log content :
<===
out
===>
# stderr.log content :
<===
err
===>
Fail 11 > 0

Using Node.removeChild() does the job for you, simply use something like this:

var leftSection = document.getElementById('left-section');
leftSection.parentNode.removeChild(leftSection);

In DOM 4, the remove method applied, but there is a poor browser support according to W3C:

The method node.remove() is implemented in the DOM 4 specification. But because of poor browser support, you should not use it.

But you can use remove method if you using jQuery...

$('#left-section').remove(); //using remove method in jQuery

Also in new frameworks like you can use conditions to remove an element, for example *ngIf in Angular and in React, rendering different views, depends on the conditions...

In my case, the route signature was different from the method parameter. I had id, but I was accepting documentId as parameter, that caused the problem.

[Route("Documents/{id}")]   <--- caused the webapi error
[Route("Documents/{documentId}")] <-- solved
public Document Get(string documentId)
{
  ..
}

try this :

mWebView.loadUrl(mWebView.getUrl().toString());

Check out the implode() function as an alternative. This will convert the array into a list. The first param is how you want the items separated. Here I have used a comma with a space after it.

$invite = implode(', ', $_POST['invite']);
echo $invite;

Firstly said, I try to force all my users to use Chrome when printing because other browsers create different layouts.

An answer from this question recommends:

@page {
  size: 210mm 297mm; 
  /* Chrome sets own margins, we change these printer settings */
  margin: 27mm 16mm 27mm 16mm; 
}

However, I ended up using this CSS for all my pages to be printed:

@media print 
{
    @page {
      size: A4; /* DIN A4 standard, Europe */
      margin:0;
    }
    html, body {
        width: 210mm;
        /* height: 297mm; */
        height: 282mm;
        font-size: 11px;
        background: #FFF;
        overflow:visible;
    }
    body {
        padding-top:15mm;
    }
}

Special case: Long Tables

When I needed to print a table over several pages, the margin:0 with the @page was leading to bleeding edges:

I could solve this thanks to this answer with:

table { page-break-inside:auto }
tr    { page-break-inside:avoid; page-break-after:auto }
thead { display:table-header-group; }
tfoot { display:table-footer-group; }

Plus setting the top-bottom-margins for @page:

@page { 
    size: auto;
    margin: 20mm 0 10mm 0;
}
body {
    margin:0;
    padding:0;
}

Result:

I would rather prefer a solution that is concise and works with all browser. For now, I hope the information above can help some developers with similar issues.

You may check if you have the directory where are the packages of Python (in my machine, this dir is C:\Python27\lib\site-packages) in the Path variable on Windows. If Python's path environment variable does not have this directory, you will not find the packages.

Try this elegant UIView extension for constraints. You can do constraints easy as:

 - firstView.coverWholeSuperview()
 - firstView.constraints(size: CGSize(width: 44, height: 44), centerX: view.centerXAnchor, centerY: view.centerXAnchor)
 - firstView.constraints(top: view.topAnchor, 
                         leading: secondView.leadingAnchor, 
                         bottom: view.bottomAnchor, 
                         trailing: secondView.trailingAnchor, 
                         padding: UIEdgeInsets(top: 12, left: 12, bottom: 12, right: 12))

Here is extension, just copy it to your project.

extension UIView {
    /// Attaches all sides of the receiver to its parent view
    func coverWholeSuperview(margin: CGFloat = 0.0) {
        let view = superview
        layoutAttachTop(to: view, margin: margin)
        layoutAttachBottom(to: view, margin: margin)
        layoutAttachLeading(to: view, margin: margin)
        layoutAttachTrailing(to: view, margin: margin)

    }

    /// Attaches the top of the current view to the given view's top if it's a superview of the current view
    /// or to it's bottom if it's not (assuming this is then a sibling view).
    @discardableResult
    func layoutAttachTop(to: UIView? = nil, margin: CGFloat = 0.0) -> NSLayoutConstraint {

        let view: UIView? = to ?? superview
        let isSuperview = view == superview
        let constraint = NSLayoutConstraint(item: self, attribute: .top, relatedBy: .equal,
                                            toItem: view, attribute: isSuperview ? .top : .bottom, multiplier: 1.0,
                                            constant: margin)
        superview?.addConstraint(constraint)

        return constraint
    }

    /// Attaches the bottom of the current view to the given view
    @discardableResult
    func layoutAttachBottom(to: UIView? = nil, margin: CGFloat = 0.0, priority: UILayoutPriority? = nil) -> NSLayoutConstraint {

        let view: UIView? = to ?? superview
        let isSuperview = (view == superview) || false
        let constraint = NSLayoutConstraint(item: self, attribute: .bottom, relatedBy: .equal,
                                            toItem: view, attribute: isSuperview ? .bottom : .top, multiplier: 1.0,
                                            constant: -margin)
        if let priority = priority {
            constraint.priority = priority
        }
        superview?.addConstraint(constraint)

        return constraint
    }

    /// Attaches the leading edge of the current view to the given view
    @discardableResult
    func layoutAttachLeading(to: UIView? = nil, margin: CGFloat = 0.0) -> NSLayoutConstraint {

        let view: UIView? = to ?? superview
        let isSuperview = (view == superview) || false
        let constraint = NSLayoutConstraint(item: self, attribute: .leading, relatedBy: .equal,
                                            toItem: view, attribute: isSuperview ? .leading : .trailing, multiplier: 1.0,
                                            constant: margin)
        superview?.addConstraint(constraint)

        return constraint
    }

    /// Attaches the trailing edge of the current view to the given view
    @discardableResult
    func layoutAttachTrailing(to: UIView? = nil, margin: CGFloat = 0.0, priority: UILayoutPriority? = nil) -> NSLayoutConstraint {

        let view: UIView? = to ?? superview
        let isSuperview = (view == superview) || false
        let constraint = NSLayoutConstraint(item: self, attribute: .trailing, relatedBy: .equal,
                                            toItem: view, attribute: isSuperview ? .trailing : .leading, multiplier: 1.0,
                                            constant: -margin)
        if let priority = priority {
            constraint.priority = priority
        }
        superview?.addConstraint(constraint)

        return constraint
    }

    // For anchoring View
    struct AnchoredConstraints {
        var top, leading, bottom, trailing, width, height, centerX, centerY: NSLayoutConstraint?
    }

    @discardableResult
    func constraints(top: NSLayoutYAxisAnchor? = nil, leading: NSLayoutXAxisAnchor? = nil, bottom: NSLayoutYAxisAnchor? = nil,
                trailing: NSLayoutXAxisAnchor? = nil, padding: UIEdgeInsets = .zero, size: CGSize = .zero,
                centerX: NSLayoutXAxisAnchor? = nil, centerY: NSLayoutYAxisAnchor? = nil,
                centerXOffset: CGFloat = 0, centerYOffset: CGFloat = 0) -> AnchoredConstraints {

        translatesAutoresizingMaskIntoConstraints = false
        var anchoredConstraints = AnchoredConstraints()

        if let top = top {
            anchoredConstraints.top = topAnchor.constraint(equalTo: top, constant: padding.top)
        }

        if let leading = leading {
            anchoredConstraints.leading = leadingAnchor.constraint(equalTo: leading, constant: padding.left)
        }

        if let bottom = bottom {
            anchoredConstraints.bottom = bottomAnchor.constraint(equalTo: bottom, constant: -padding.bottom)
        }

        if let trailing = trailing {
            anchoredConstraints.trailing = trailingAnchor.constraint(equalTo: trailing, constant: -padding.right)
        }

        if size.width != 0 {
            anchoredConstraints.width = widthAnchor.constraint(equalToConstant: size.width)
        }

        if size.height != 0 {
            anchoredConstraints.height = heightAnchor.constraint(equalToConstant: size.height)
        }

        if let centerX = centerX {
            anchoredConstraints.centerX = centerXAnchor.constraint(equalTo: centerX, constant: centerXOffset)
        }

        if let centerY = centerY {
            anchoredConstraints.centerY = centerYAnchor.constraint(equalTo: centerY, constant: centerYOffset)
        }

        [anchoredConstraints.top, anchoredConstraints.leading, anchoredConstraints.bottom,
         anchoredConstraints.trailing, anchoredConstraints.width,
         anchoredConstraints.height, anchoredConstraints.centerX,
         anchoredConstraints.centerY].forEach { $0?.isActive = true }

        return anchoredConstraints
    }
}

I followed around five different answers as well as all the blog posts in the previous answers and still had problems. I was trying to add a listener to some existing code that was tracing using the TraceSource.TraceEvent(TraceEventType, Int32, String) method where the TraceSource object was initialised with a string making it a 'named source'.

For me the issue was not creating a valid combination of source and switch elements to target this source. Here is an example that will log to a file called tracelog.txt. For the following code:

TraceSource source = new TraceSource("sourceName");
source.TraceEvent(TraceEventType.Verbose, 1, "Trace message");

I successfully managed to log with the following diagnostics configuration:

<system.diagnostics>
    <sources>
        <source name="sourceName" switchName="switchName">
            <listeners>
                <add
                    name="textWriterTraceListener"
                    type="System.Diagnostics.TextWriterTraceListener"
                    initializeData="tracelog.txt" />
            </listeners>
        </source>
    </sources>

    <switches>
        <add name="switchName" value="Verbose" />
    </switches>
</system.diagnostics>

I have tried many different approaches and the best one for me is:

ps -p $$

It also works under Cygwin and cannot produce false positives as PID grepping. With some cleaning, it outputs just an executable name (under Cygwin with path):

ps -p $$ | tail -1 | awk '{print $NF}'

You can create a function so you don't have to memorize it:

# Print currently active shell
shell () {
  ps -p $$ | tail -1 | awk '{print $NF}'
}

...and then just execute shell.

It was tested under Debian and Cygwin.

This is essentially cji's answer - Jul 30 '10 at 5:58. I changed the try except structure for a little more clarity on what was causing the exception.

def find_between( inputStr, firstSubstr, lastSubstr ):
'''
find between firstSubstr and lastSubstr in inputStr  STARTING FROM THE LEFT
    http://stackoverflow.com/questions/3368969/find-string-between-two-substrings
        above also has a func that does this FROM THE RIGHT   
'''
start, end = (-1,-1)
try:
    start = inputStr.index( firstSubstr ) + len( firstSubstr )
except ValueError:
    print '    ValueError: ',
    print "firstSubstr=%s  -  "%( firstSubstr ), 
    print sys.exc_info()[1]

try:
    end = inputStr.index( lastSubstr, start )       
except ValueError:
    print '    ValueError: ',
    print "lastSubstr=%s  -  "%( lastSubstr ), 
    print sys.exc_info()[1]

return inputStr[start:end]    

1. Right click on Drawable
2. Select New ---> Directory
3. Enter the directory name. Eg: logo.png(the location will already show the drawable folder by default)
4. Copy and paste the images directly into the drawable folder. While pasting you get an option to choose mdpi/xhdpi/xxhdpi etc for each of the images from a list. Select the appropriate option and enter the name of the image. Make sure to keep the same name as the directory name i.e logo.png
5. Do the same for the remaining images. All of them will be placed under the logo.png main folder.

Similar to Lukazoid's answer I've created an extension for IQueryable.

   public static IEnumerable<IEnumerable<T>> PageIterator<T>(this IQueryable<T> source, int pageSize)
            {
                Contract.Requires(source != null);
                Contract.Requires(pageSize > 0);
                Contract.Ensures(Contract.Result<IEnumerable<IQueryable<T>>>() != null);

                using (var enumerator = source.GetEnumerator())
                {
                    while (enumerator.MoveNext())
                    {
                        var currentPage = new List<T>(pageSize)
                        {
                            enumerator.Current
                        };

                        while (currentPage.Count < pageSize && enumerator.MoveNext())
                        {
                            currentPage.Add(enumerator.Current);
                        }
                        yield return new ReadOnlyCollection<T>(currentPage);
                    }
                }
            }

It is useful if Skip or Take are not supported.

for me i do it like this , go to your textView in xml file and add this two lines

` android:maxLines="1"

android:inputType="text"`

This question has already received several good answers.

In summary, this technique is taking advantage of a feature of how the language is compiled. That is, JavaScript "short-circuits" the evaluation of Boolean operators and will return the value associated with either the first non-false variable value or whatever the last variable contains. See Anurag's explanation of those values that will evaluate to false.

Using this technique is not good practice for several reasons; however.

1. Code Readability: This is using Boolean operators, and if the behavior of how this compiles is not understood, then the expected result would be a Boolean value.

2. Stability: This is using a feature of how the language is compiled that is inconsistent across multiple languages, and due to this it is something that could potentially be targeted for change in the future.

3. Documented Features: There is an existing alternative that meets this need and is consistent across more languages. This would be the ternary operator:

   () ? value 1: Value 2.

Using the ternary operator does require a little more typing, but it clearly distinguishes between the Boolean expression being evaluated and the value being assigned. In addition it can be chained, so the types of default assignments being performed above could be recreated.

var a;
var b = null;
var c = undefined;
var d = 4;
var e = 'five';

var f =  ( a ) ? a : 
                ( b ) ? b :
                       ( c ) ? c :
                              ( d ) ? d :
                                      e;

alert(f); // 4

You cannot do that in Standard C++.

I'm posting this because it is the only correct answer. Your question asks how to do it in C++. Well, you can't do it in C++. You can do it in Windows, POSIX, Linux, Android, but all those are OS-specific solutions and not part of the language standard.

Standard C++ does not have a networking layer at all.

I assume you have this wrong assumption that C++ Standard defines the same scope of features as other language standards, Java. While Java might have built-in networking (and even a GUI framework) in the language's own standard library, C++ does not.

While there are third-party APIs and libraries which can be used by a C++ program, this is in no way the same as saying that you can do it in C++.

Here is an example to clarify what I mean. You can open a file in C++ because it has an fstream class as part of its standard library. This is not the same thing as using CreateFile(), which is a Windows-specific function and available only for WINAPI.

• Right Click on the Task in Task Scheduler
• Click on the Actions tab
• Click on Edit
• Remove the quotes around the path in the "Starts In" textbox.

Yes, %d is for decimal (integer), double expect %f. But simply using %f will default to up to precision 6. To print all of the precision digits for a double, you can pass it via string as:

System.out.printf("%s \r\n",String.valueOf(d));

or

System.out.printf("%s \r\n",Double.toString(d));

This is what println do by default:

System.out.println(d) 

(and terminates the line)

Forget float, margin and html 3/5. The mail is very obsolete. You need do all with table. One line = one table. You need margin or padding ? Do another column.

Codepen

Example : i need one line with 1 One Picture of 40*40 2 One margin of 10 px 3 One text of 400px

I start my line :

<table style=" background-repeat:no-repeat; width:450px;margin:0;" cellpadding="0" cellspacing="0" border="0">
   <tr style="height:40px; width:450px; margin:0;">
     <td style="height:40px; width:40px; margin:0;">
        <img src="" style="width=40px;height40;margin:0;display:block"
     </td>
     <td style="height:40px; width:10px; margin:0;">        
     </td>
     <td style="height:40px; width:400px; margin:0;">
     <p style=" margin:0;"> my text   </p>
     </td>
   </tr>
</table>

See jsocket. Haven't used it myself. Been more than 3 years since last update (as of 26/6/2014).

* Uses flash :(

From the documentation:

<script type='text/javascript'>
    // Host we are connecting to
    var host = 'localhost'; 
    // Port we are connecting on
    var port = 3000;

    var socket = new jSocket();

    // When the socket is added the to document 
    socket.onReady = function(){
            socket.connect(host, port);             
    }

    // Connection attempt finished
    socket.onConnect = function(success, msg){
            if(success){
                    // Send something to the socket
                    socket.write('Hello world');            
            }else{
                    alert('Connection to the server could not be estabilished: ' + msg);            
            }       
    }
    socket.onData = function(data){
            alert('Received from socket: '+data);   
    }

    // Setup our socket in the div with the id="socket"
    socket.setup('mySocket');       
</script>

Use dir or type on the 'string' to find out what it is. I suspect that it's one of BeautifulSoup's tag objects, that prints like a string, but really isn't one. Otherwise, its inside a list and you need to convert each string separately.

In any case, why are you objecting to using Unicode? Any specific reason?

I used to just use this:

<html>
  <head>
    <script type="text/javascript">
      function focusFieldOne() {
        document.FormName.FieldName.focus();
      }
    </script>
  </head>

  <body onLoad="focusFieldOne();">
    <form name="FormName">
      Field <input type="text" name="FieldName">
    </form>
  </body>
</html>

That said, you can just use the autofocus attribute in HTML 5.

Please note: I wanted to update this old thread showing the example asked plus the newer, easier update for those still reading this. ;)

I use EF database first in order to provide more flexibility and control over the database configuration.

EF code first and model first seemed cool at first, and provides database independence, however in doing this it does not allow you to specify what I consider very basic and common database configuration information. For example table indexes, security metadata, or have a primary key containing more than one column. I find I want to use these and other common database features and therefore have to do some database configuration directly anyway.

I find the default POCO classes generated during DB first are very clean, however lack the very useful data annotation attributes, or mappings to stored procedures. I used the T4 templates to overcome some of these limitations. T4 templates are awesome, especially when combined with your own metadata and partial classes.

Model first seems to have lots of potential, but is giving me lots of bugs during complex database schema refactoring. Not sure why.

In case someone else ends up here struggling to customize admin form Many2Many saving behaviour, you can't call self.instance.my_m2m.add(obj) in your ModelForm.save override, as ModelForm.save later populates your m2m from self.cleaned_data['my_m2m'] which overwrites your changes. Instead call:

my_m2ms = list(self.cleaned_data['my_m2ms'])
my_m2ms.extend(my_custom_new_m2ms)
self.cleaned_data['my_m2ms'] = my_m2ms

(It is fine to convert the incoming QuerySet to a list - the ManyToManyField does that anyway.)

You can change this in the page load.

My intention is that when the page comes to the load function, switch the links (the current link in the required one)

There isn't one as far as I know of, one way however to do it is to create a dict for normal lookup by key and another dict for reverse lookup by value.

There's an example of such an implementation here:

http://code.activestate.com/recipes/415903-two-dict-classes-which-can-lookup-keys-by-value-an/

This does mean that looking up the keys for a value could result in multiple results which can be returned as a simple list.

If both data frames have the same column names then you should add one data frame inside ggplot() call and also name x and y values inside aes() of ggplot() call. Then add first geom_line() for the first line and add second geom_line() call with data=df2 (where df2 is your second data frame). If you need to have lines in different colors then add color= and name for eahc line inside aes() of each geom_line().

df1<-data.frame(x=1:10,y=rnorm(10))
df2<-data.frame(x=1:10,y=rnorm(10))

ggplot(df1,aes(x,y))+geom_line(aes(color="First line"))+
  geom_line(data=df2,aes(color="Second line"))+
  labs(color="Legend text")

On my AWS beanstalk server, I don't see $_SERVER['HTTPS'] variable. I do see $_SERVER['HTTP_X_FORWARDED_PROTO'] which can be either 'http' or 'https' so if you're hosting on AWS, use this:

if ($_SERVER['HTTP_HOST'] != 'localhost' and $_SERVER['HTTP_X_FORWARDED_PROTO'] != "https") {
    $location = 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
    header('HTTP/1.1 301 Moved Permanently');
    header('Location: ' . $location);
    exit;
}

The terms "background page", "popup", "content script" are still confusing you; I strongly suggest a more in-depth look at the Google Chrome Extensions Documentation.

Regarding your question if content scripts or background pages are the way to go:

Content scripts: Definitely
Content scripts are the only component of an extension that has access to the web-page's DOM.

Background page / Popup: Maybe (probably max. 1 of the two)
You may need to have the content script pass the DOM content to either a background page or the popup for further processing.

Let me repeat that I strongly recommend a more careful study of the available documentation!
That said, here is a sample extension that retrieves the DOM content on StackOverflow pages and sends it to the background page, which in turn prints it in the console:

background.js:

// Regex-pattern to check URLs against. 
// It matches URLs like: http[s]://[...]stackoverflow.com[...]
var urlRegex = /^https?:\/\/(?:[^./?#]+\.)?stackoverflow\.com/;

// A function to use as callback
function doStuffWithDom(domContent) {
    console.log('I received the following DOM content:\n' + domContent);
}

// When the browser-action button is clicked...
chrome.browserAction.onClicked.addListener(function (tab) {
    // ...check the URL of the active tab against our pattern and...
    if (urlRegex.test(tab.url)) {
        // ...if it matches, send a message specifying a callback too
        chrome.tabs.sendMessage(tab.id, {text: 'report_back'}, doStuffWithDom);
    }
});

content.js:

// Listen for messages
chrome.runtime.onMessage.addListener(function (msg, sender, sendResponse) {
    // If the received message has the expected format...
    if (msg.text === 'report_back') {
        // Call the specified callback, passing
        // the web-page's DOM content as argument
        sendResponse(document.all[0].outerHTML);
    }
});

manifest.json:

{
  "manifest_version": 2,
  "name": "Test Extension",
  "version": "0.0",
  ...

  "background": {
    "persistent": false,
    "scripts": ["background.js"]
  },
  "content_scripts": [{
    "matches": ["*://*.stackoverflow.com/*"],
    "js": ["content.js"]
  }],
  "browser_action": {
    "default_title": "Test Extension"
  },

  "permissions": ["activeTab"]
}

While this is one of the most voted feature requests, there is one plugin available, by Victor Kropp, that adds support to makefiles:

Makefile support plugin for IntelliJ IDEA

Install

You can install directly from the official repository:

Settings > Plugins > search for makefile > Search in repositories > Install > Restart

Use

There are at least three different ways to run:

1. Right click on a makefile and select Run
2. Have the makefile open in the editor, put the cursor over one target (anywhere on the line), hit alt + enter, then select make target
3. Hit ctrl/cmd + shift + F10 on a target (although this one didn't work for me on a mac).

It opens a pane named Run target with the output.

One way to do this is to insert a dummy column with the sums in order to sort:

In [10]: sum_B_over_A = df.groupby('A').sum().B

In [11]: sum_B_over_A
Out[11]: 
A
bar    0.253652
baz   -2.829711
foo    0.551376
Name: B

in [12]: df['sum_B_over_A'] = df.A.apply(sum_B_over_A.get_value)

In [13]: df
Out[13]: 
     A         B      C  sum_B_over_A
0  foo  1.624345  False      0.551376
1  bar -0.611756   True      0.253652
2  baz -0.528172  False     -2.829711
3  foo -1.072969   True      0.551376
4  bar  0.865408  False      0.253652
5  baz -2.301539   True     -2.829711

In [14]: df.sort(['sum_B_over_A', 'A', 'B'])
Out[14]: 
     A         B      C   sum_B_over_A
5  baz -2.301539   True      -2.829711
2  baz -0.528172  False      -2.829711
1  bar -0.611756   True       0.253652
4  bar  0.865408  False       0.253652
3  foo -1.072969   True       0.551376
0  foo  1.624345  False       0.551376

and maybe you would drop the dummy row:

In [15]: df.sort(['sum_B_over_A', 'A', 'B']).drop('sum_B_over_A', axis=1)
Out[15]: 
     A         B      C
5  baz -2.301539   True
2  baz -0.528172  False
1  bar -0.611756   True
4  bar  0.865408  False
3  foo -1.072969   True
0  foo  1.624345  False

You should learn the basics of crontab.

Edit the cron by command crontab -e and then ^ (CTRL) + X then Y and finally press ENTER (return) on mac to save the file. You can check the new crons have been installed of not by crontab -l

A crontab file has five fields for specifying mins, hours, the day of the month, month, and the day of the week followed by the command to be run at that interval.

*     *     *   *    *   command to be executed
-     -     -   -    -
|     |     |   |    |
|     |     |   |    +----- day of week (0-6) (Sunday=0)
|     |     |   +------- month (1-12)
|     |     +--------- day of month (1-31)
|     +----------- hour (0-23)
+------------- min (0-59)

* in the value field above means all legal values as in braces for that column.

Here, I wrote a detailed post about it: Setup Cron in Unix

Here is a (non-idiomatic) Scala version of the smoothed z-score algorithm:

/**
  * Smoothed zero-score alogrithm shamelessly copied from https://stackoverflow.com/a/22640362/6029703
  * Uses a rolling mean and a rolling deviation (separate) to identify peaks in a vector
  *
  * @param y - The input vector to analyze
  * @param lag - The lag of the moving window (i.e. how big the window is)
  * @param threshold - The z-score at which the algorithm signals (i.e. how many standard deviations away from the moving mean a peak (or signal) is)
  * @param influence - The influence (between 0 and 1) of new signals on the mean and standard deviation (how much a peak (or signal) should affect other values near it)
  * @return - The calculated averages (avgFilter) and deviations (stdFilter), and the signals (signals)
  */
private def smoothedZScore(y: Seq[Double], lag: Int, threshold: Double, influence: Double): Seq[Int] = {
  val stats = new SummaryStatistics()

  // the results (peaks, 1 or -1) of our algorithm
  val signals = mutable.ArrayBuffer.fill(y.length)(0)

  // filter out the signals (peaks) from our original list (using influence arg)
  val filteredY = y.to[mutable.ArrayBuffer]

  // the current average of the rolling window
  val avgFilter = mutable.ArrayBuffer.fill(y.length)(0d)

  // the current standard deviation of the rolling window
  val stdFilter = mutable.ArrayBuffer.fill(y.length)(0d)

  // init avgFilter and stdFilter
  y.take(lag).foreach(s => stats.addValue(s))

  avgFilter(lag - 1) = stats.getMean
  stdFilter(lag - 1) = Math.sqrt(stats.getPopulationVariance) // getStandardDeviation() uses sample variance (not what we want)

  // loop input starting at end of rolling window
  y.zipWithIndex.slice(lag, y.length - 1).foreach {
    case (s: Double, i: Int) =>
      // if the distance between the current value and average is enough standard deviations (threshold) away
      if (Math.abs(s - avgFilter(i - 1)) > threshold * stdFilter(i - 1)) {
        // this is a signal (i.e. peak), determine if it is a positive or negative signal
        signals(i) = if (s > avgFilter(i - 1)) 1 else -1
        // filter this signal out using influence
        filteredY(i) = (influence * s) + ((1 - influence) * filteredY(i - 1))
      } else {
        // ensure this signal remains a zero
        signals(i) = 0
        // ensure this value is not filtered
        filteredY(i) = s
      }

      // update rolling average and deviation
      stats.clear()
      filteredY.slice(i - lag, i).foreach(s => stats.addValue(s))
      avgFilter(i) = stats.getMean
      stdFilter(i) = Math.sqrt(stats.getPopulationVariance) // getStandardDeviation() uses sample variance (not what we want)
  }

  println(y.length)
  println(signals.length)
  println(signals)

  signals.zipWithIndex.foreach {
    case(x: Int, idx: Int) =>
      if (x == 1) {
        println(idx + " " + y(idx))
      }
  }

  val data =
    y.zipWithIndex.map { case (s: Double, i: Int) => Map("x" -> i, "y" -> s, "name" -> "y", "row" -> "data") } ++
    avgFilter.zipWithIndex.map { case (s: Double, i: Int) => Map("x" -> i, "y" -> s, "name" -> "avgFilter", "row" -> "data") } ++
    avgFilter.zipWithIndex.map { case (s: Double, i: Int) => Map("x" -> i, "y" -> (s - threshold * stdFilter(i)), "name" -> "lower", "row" -> "data") } ++
    avgFilter.zipWithIndex.map { case (s: Double, i: Int) => Map("x" -> i, "y" -> (s + threshold * stdFilter(i)), "name" -> "upper", "row" -> "data") } ++
    signals.zipWithIndex.map { case (s: Int, i: Int) => Map("x" -> i, "y" -> s, "name" -> "signal", "row" -> "signal") }

  Vegas("Smoothed Z")
    .withData(data)
    .mark(Line)
    .encodeX("x", Quant)
    .encodeY("y", Quant)
    .encodeColor(
      field="name",
      dataType=Nominal
    )
    .encodeRow("row", Ordinal)
    .show

  return signals
}

Here's a test that returns the same results as the Python and Groovy versions:

val y = List(1d, 1d, 1.1d, 1d, 0.9d, 1d, 1d, 1.1d, 1d, 0.9d, 1d, 1.1d, 1d, 1d, 0.9d, 1d, 1d, 1.1d, 1d, 1d,
  1d, 1d, 1.1d, 0.9d, 1d, 1.1d, 1d, 1d, 0.9d, 1d, 1.1d, 1d, 1d, 1.1d, 1d, 0.8d, 0.9d, 1d, 1.2d, 0.9d, 1d,
  1d, 1.1d, 1.2d, 1d, 1.5d, 1d, 3d, 2d, 5d, 3d, 2d, 1d, 1d, 1d, 0.9d, 1d,
  1d, 3d, 2.6d, 4d, 3d, 3.2d, 2d, 1d, 1d, 0.8d, 4d, 4d, 2d, 2.5d, 1d, 1d, 1d)

val lag = 30
val threshold = 5d
val influence = 0d

smoothedZScore(y, lag, threshold, influence)

Gist here

This is for others (like me :) ). Don't forget to add the spring tx jar/maven dependency. Also correct configuration in appctx is:

xmlns:tx="http://www.springframework.org/schema/tx"

xsi:schemaLocation="http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd"

, by mistake wrong configuration which others may have

xmlns:tx="http://www.springframework.org/schema/tx/spring-tx-3.1.xsd"

i.e., extra "/spring-tx-3.1.xsd"

xsi:schemaLocation="http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd"

in other words what is there in xmlns(namespace) should have proper mapping in schemaLocation (namespace vs schema).

namespace here is : http://www.springframework.org/schema/tx

schema Doc Of namespace is : http://www.springframework.org/schema/tx/spring-tx-3.1.xsd

this schema of namespace later is mapped in jar to locate the path of actual xsd located in org.springframework.transaction.config

Another way is to use meta tags. Whatever data is supposed to be passed to your JavaScript can be assigned like this:

<meta name="yourdata" content="whatever" />
<meta name="moredata" content="more of this" />

The data can then be pulled from the meta tags like this (best done in a DOMContentLoaded event handler):

var data1 = document.getElementsByName('yourdata')[0].content;
var data2 = document.getElementsByName('moredata')[0].content;

Absolutely no hassle with jQuery or the likes, no hacks and workarounds necessary, and works with any HTML version that supports meta tags...

Looking at the source code I also think there must be some issue with the private key.

What it is doing is actually to check if the certificate that is passed is of type X509Certificate2 and if it has the private key.

If it doesn't find the private key it tries to find the certificate in the CurrentUser store and then in the LocalMachine store. If it finds the certificate it checks if the private key is present.

(see source code from class SecureChannnel, method EnsurePrivateKey)

So depending on which file you imported (.cer - without private key or .pfx - with private key) and on which store it might not find the right one and Request.ClientCertificate won't be populated.

You can activate Network Tracing to try to debug this. It will give you output like this:

• Trying to find a matching certificate in the certificate store
• Cannot find the certificate in either the LocalMachine store or the CurrentUser store.

public static byte[] hexToBytes(String string) {
 int length = string.length();
 byte[] data = new byte[length / 2];
 for (int i = 0; i < length; i += 2) {
  data[i / 2] = (byte)((Character.digit(string.charAt(i), 16) << 4) + Character.digit(string.charAt(i + 1), 16));
 }
 return data;
}

~% FILE="example.tar.gz"

~% echo "${FILE%%.*}"
example

~% echo "${FILE%.*}"
example.tar

~% echo "${FILE#*.}"
tar.gz

~% echo "${FILE##*.}"
gz

For more details, see shell parameter expansion in the Bash manual.

thanks @Maverick1st the algorithm, I implemented it to Swift, in my case height is the input parameter

class func resizeImage(image: UIImage, newHeight: CGFloat) -> UIImage {

    let scale = newHeight / image.size.height
    let newWidth = image.size.width * scale
    UIGraphicsBeginImageContext(CGSizeMake(newWidth, newHeight))
    image.drawInRect(CGRectMake(0, 0, newWidth, newHeight))
    let newImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    return newImage
}

(1) Your <script> tag should be placed before the closing </body> tag. Your JavaScript is trying to manipulate HTML elements that haven't been loaded into the DOM yet.
(2) Your assignment of HTML content looks jumbled.
(3) Be consistent with the case in your element ID, i.e. 'DIV2' vs 'Div2'
(4) User lower case for 'document' object (credit: ThatOtherPerson)

<body>
<div id="DIV1">
 // Some content goes here.
</div>

<div id="DIV2">
</div>
<script type="text/javascript">

   var MyDiv1 = document.getElementById('DIV1');
   var MyDiv2 = document.getElementById('DIV2');
   MyDiv2.innerHTML = MyDiv1.innerHTML;

</script>
</body>

Hackbod's is one of the best answers on Stack Overflow. It throws light on a very obscure subject. It helped me a lot.

Another really helpful resource is this must-see video: Google I/O 2011: Memory management for Android Apps

UPDATE:

Process Stats, a service to discover how your app manages memory explained at the blog post Process Stats: Understanding How Your App Uses RAM by Dianne Hackborn:

def touch(fname):
    if os.path.exists(fname):
        os.utime(fname, None)
    else:
        open(fname, 'a').close()

We went over this topic recently in my EECS class. If you want to look at the lecture notes in detail, visit http://umich.edu/~eecs381/lecture/IdiomsDesPattsCreational.pdf

There are two ways that I know to create a Singleton class correctly.

First Way:

Implement it similar to the way you have it in your example. As for destruction, "Singletons usually endure for the length of the program run; most OSs will recover memory and most other resources when a program terminates, so there is an argument for not worrying about this."

However, it is good practice to clean up at program termination. Therefore, you can do this with an auxiliary static SingletonDestructor class and declare that as a friend in your Singleton.

class Singleton {
public:
  static Singleton* get_instance();
  
  // disable copy/move -- this is a Singleton
  Singleton(const Singleton&) = delete;
  Singleton(Singleton&&) = delete;
  Singleton& operator=(const Singleton&) = delete;
  Singleton& operator=(Singleton&&) = delete;

  friend class Singleton_destroyer;

private:
  Singleton();  // no one else can create one
  ~Singleton(); // prevent accidental deletion

  static Singleton* ptr;
};

// auxiliary static object for destroying the memory of Singleton
class Singleton_destroyer {
public:
  ~Singleton_destroyer { delete Singleton::ptr; }
};

// somewhere in code (Singleton.cpp is probably the best place) 
// create a global static Singleton_destroyer object
Singleton_destoyer the_destroyer;

The Singleton_destroyer will be created on program startup, and "when program terminates, all global/static objects are destroyed by the runtime library shutdown code (inserted by the linker), so the_destroyer will be destroyed; its destructor will delete the Singleton, running its destructor."

Second Way

This is called the Meyers Singleton, created by C++ wizard Scott Meyers. Simply define get_instance() differently. Now you can also get rid of the pointer member variable.

// public member function
static Singleton& Singleton::get_instance()
{
  static Singleton s;
  return s;
}

This is neat because the value returned is by reference and you can use . syntax instead of -> to access member variables.

"Compiler automatically builds code that creates 's' first time through the declaration, not thereafter, and then deletes the static object at program termination."

Note also that with the Meyers Singleton you "can get into very difficult situation if objects rely on each other at the time of termination - when does the Singleton disappear relative to other objects? But for simple applications, this works fine."

I don't know if this is the correct way however I did this:

<div class="control-group">
  <label class="control-label" for="id1">Label:</label>
  <div class="controls">
    <textarea id="id1" class="textareawidth" rows="10" name="anyname">value</textarea>
  </div>
</div>

and put this in my bootstrapcustom.css file:

@media (min-width: 768px) {
    .textareawidth {
        width:500px;
    }
}
@media (max-width: 767px) {
    .textareawidth {

    }
}

This way it resizes based on the viewport. Seems to line everything up nicely on a big browser and on a small mobile device.

To add to the response from @Anish, if you are having issues with not seeing the text when exporting the SVG to an image, you can create a recursive function to loop through the children of the SVGDocument, try to cast it to a SvgText if possible (add your own error checking) and set the font family and style.

    foreach(var child in svgDocument.Children)
    {
        SetFont(child);
    }

    public void SetFont(SvgElement element)
    {
        foreach(var child in element.Children)
        {
            SetFont(child); //Call this function again with the child, this will loop
                            //until the element has no more children
        }

        try
        {
            var svgText = (SvgText)parent; //try to cast the element as a SvgText
                                           //if it succeeds you can modify the font

            svgText.Font = new Font("Arial", 12.0f);
            svgText.FontSize = new SvgUnit(12.0f);
        }
        catch
        {

        }
    }

Let me know if there are questions.

To rethrow do

 throw $e;

not the message.

In my app, user experience is better if more memory is used, so I have to decide if I really should free all the memory I can in didReceiveMemoryWarning. Based on Split's and Jasper Pol's answer, using a maximum of 45% of the total device memory appears to be a safe threshold (thanks guys).

In case someone wants to look at my actual implementation:

#import "mach/mach.h"

- (void)didReceiveMemoryWarning
{
    // Remember to call super
    [super didReceiveMemoryWarning];

    // If we are using more than 45% of the memory, free even important resources,
    // because the app might be killed by the OS if we don't
    if ([self __getMemoryUsedPer1] > 0.45)
    {
        // Free important resources here
    }

    // Free regular unimportant resources always here
}

- (float)__getMemoryUsedPer1
{
    struct mach_task_basic_info info;
    mach_msg_type_number_t size = sizeof(info);
    kern_return_t kerr = task_info(mach_task_self(), MACH_TASK_BASIC_INFO, (task_info_t)&info, &size);
    if (kerr == KERN_SUCCESS)
    {
        float used_bytes = info.resident_size;
        float total_bytes = [NSProcessInfo processInfo].physicalMemory;
        //NSLog(@"Used: %f MB out of %f MB (%f%%)", used_bytes / 1024.0f / 1024.0f, total_bytes / 1024.0f / 1024.0f, used_bytes * 100.0f / total_bytes);
        return used_bytes / total_bytes;
    }
    return 1;
}

Swift (based on this answer):

func __getMemoryUsedPer1() -> Float
{
    let MACH_TASK_BASIC_INFO_COUNT = (sizeof(mach_task_basic_info_data_t) / sizeof(natural_t))
    let name = mach_task_self_
    let flavor = task_flavor_t(MACH_TASK_BASIC_INFO)
    var size = mach_msg_type_number_t(MACH_TASK_BASIC_INFO_COUNT)
    var infoPointer = UnsafeMutablePointer<mach_task_basic_info>.alloc(1)
    let kerr = task_info(name, flavor, UnsafeMutablePointer(infoPointer), &size)
    let info = infoPointer.move()
    infoPointer.dealloc(1)
    if kerr == KERN_SUCCESS
    {
        var used_bytes: Float = Float(info.resident_size)
        var total_bytes: Float = Float(NSProcessInfo.processInfo().physicalMemory)
        println("Used: \(used_bytes / 1024.0 / 1024.0) MB out of \(total_bytes / 1024.0 / 1024.0) MB (\(used_bytes * 100.0 / total_bytes)%%)")
        return used_bytes / total_bytes
    }
    return 1
}

Completely reset?

1. Delete the .git directory locally.

2. Recreate the git repostory:

   $ cd (project-directory)
   $ git init
   $ (add some files)
   $ git add .
   $ git commit -m 'Initial commit'
   

3. Push to remote server, overwriting. Remember you're going to mess everyone else up doing this … you better be the only client.

   $ git remote add origin <url>
   $ git push --force --set-upstream origin master
   

create one folder in your harddisk e.g sample1 and go to command prompt type :cd and gives the path of sample1 folder and then install all modules...

npm install express

npm install jade

npm install socket.io

and then whatever you are creating application save in sample1 folder

try it...

If you want it visually formatted to two decimals as a string (for output) use toFixed():

var priceString = someValue.toFixed(2);

The answer by @David has two problems:

1. It leaves the result as a floating point number, and consequently holds the possibility of displaying a particular result with many decimal places, e.g. 134.1999999999 instead of "134.20".

2. If your value is an integer or rounds to one tenth, you will not see the additional decimal value:

   var n = 1.099;
   (Math.round( n * 100 )/100 ).toString() //-> "1.1"
   n.toFixed(2)                            //-> "1.10"
   
   var n = 3;
   (Math.round( n * 100 )/100 ).toString() //-> "3"
   n.toFixed(2)                            //-> "3.00"
   

And, as you can see above, using toFixed() is also far easier to type. ;)

Here is a function I came up with

function getElementsById(elementID){
    var elementCollection = new Array();
    var allElements = document.getElementsByTagName("*");
    for(i = 0; i < allElements.length; i++){
        if(allElements[i].id == elementID)
            elementCollection.push(allElements[i]);

    }
    return elementCollection;
}

Apparently there is a convention supported by prototype, and probably other major JavaScript libraries.

However, I have come to discover that dollar sign function has become the more-or-less de facto shortcut to document.getElementById(). Let’s face it, we all use document.getElementById() a lot. Not only does it take time to type, but it adds bytes to your code as well.

here is the function from prototype:

function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

[Source]

Just added in February 2021 is this documentation on "What is a VS Code 'workspace'": workspaces.

A Visual Studio Code "workspace" is the collection of one or more folders that are opened in a VS Code window (instance). In most cases, you will have a single folder opened as the workspace but, depending on your development workflow, you can include more than one folder, using an advanced configuration called Multi-root workspaces.

The concept of a workspace enables VS Code to:

Configure settings that only apply to a specific folder or folders but not others. Persist task and debugger launch configurations that are only valid in the context of that workspace. Store and restore UI state associated with that workspace (for example, the files that are opened). Selectively enable or disable extensions only for that workspace. You may see the terms "folder" and "workspace" used interchangeably in VS Code documentation, issues, and community discussions. Think of a workspace as the root of a project that has extra VS Code knowledge and capabilities.

• Note: It is also possible to open VS Code without a workspace. For example, when you open a new VS Code window by selecting a file from your platform's File menu, you will not be inside a workspace. In this mode, some of VS Code's capabilities are reduced but you can still open text files and edit them.

Single-folder workspaces

You don't have to do anything for a folder to become a VS Code workspace other than open the folder with VS Code. Once a folder has been opened, VS Code will automatically keep track of things such as your open files and editor layout so the editor will be as you left it when you reopen that folder. You can also add other folder-specific configurations such as workspace-specific settings (versus global user settings) and task definition and debugging launch files (see below in the workspace settings section).

Multi-root workspaces

Multi-root workspaces are an advanced capability of VS Code that allow you to configure multiple distinct folders to be part of the workspace. Instead of opening a folder as workspace, you will open a .code-workspace JSON file that lists the folders of the workspace. For example:

{
  "folders": [
    {
      "path": "my-folder-a"
    },
    {
      "path": "my-folder-b"
    }
  ]
}

A multi-root workspace opened in VS Code

• Note: The visual difference of having a folder opened versus opening a .code-workspace file can be subtle. To give you a hint that a .code-workspace file has been opened, some areas of the user interface (for example, the root of the File Explorer) show an extra (Workspace) suffix next to the name.

And much more at the first link.

• Right-click on your project in solution explorer.
• Select Manage NuGet Packages for Solution.
• Search NuGet.CommandLine by Microsoft and Install it.
• On complete installation, you will find a folder named packages in your project. Go to solution explorer and look for it.
• Inside packages look for a folder named NuGet.CommandLine.3.5.0, here 3.5.0 is just version name your folder name will change accordingly.
• Inside NuGet.CommandLine.3.5.0 look for a folder named tools.
• Inside tools you will get your nuget.exe

XMLSpy does that for you, although that's not free...

I believe that Liquid Xml Studio does it for you and is free, but I have not personally used it to create test data.

Assuming you're not using jQuery or some other library that makes this sort of thing easier for you, you can just use the element's innerHTML property.

document.getElementById("content").innerHTML = "whatever";

seaborn has a wrapper function scatterplot that does it more efficiently.

sns.scatterplot(data = df, x = 'one', y = 'two', data =  'key1'])

Even easier!

strings contains myString

For linux/unix OS, you can use the shell syntax

const shell = require('child_process').execSync ; 

const currentPath= `/path/to/name.png`;
const newPath= `/path/to/another_name.png`;

shell(`mv ${currentPath} ${newPath}`);

That's it!

Angular will automatically update a component when it detects a variable change .

So all you have to do for it to "refresh" is ensure that the header has a reference to the new data. This could be via a subscription within header.component.ts or via an @Input variable...

an example...

main.html

<app-header [header-data]="headerData"></app-header>

main.component.ts

public headerData:int = 0;

ngOnInit(){
    setInterval(()=>{this.headerData++;}, 250);
}

header.html

<p>{{data}}</p>

header.ts

@Input('header-data') data;

In the above example, the header will recieve the new data every 250ms and thus update the component.

For more information about Angular's lifecycle hooks, see: https://angular.io/guide/lifecycle-hooks

There's a more convenient way to store passwords in a script but you will have to encrypt and obfuscate the script so that it cannot be read. In order to successfully encrypt and obfuscate a shell script and actually have that script be executable, try copying and pasting it here:

http://www.kinglazy.com/shell-script-encryption-kinglazy-shieldx.htm

On the above page, all you have to do is submit your script and give the script a proper name, then hit the download button. A zip file will be generated for you. Right click on the download link and copy the URL you're provided. Then, go to your UNIX box and perform the following steps.

Installation:

1. wget link-to-the-zip-file
2. unzip the-newly-downloaded-zip-file
3. cd /tmp/KingLazySHIELD
4. ./install.sh /var/tmp/KINGLAZY/SHIELDX-(your-script-name) /home/(your-username) -force

What the above install command will do for you is:

1. Install the encrypted version of your script in the directory /var/tmp/KINGLAZY/SHIELDX-(your-script-name).
2. It'll place a link to this encrypted script in whichever directory you specify in replacement of /home/(your-username) - that way, it allows you to easily access the script without having to type the absolute path.
3. Ensures NO ONE can modify the script - Any attempts to modify the encrypted script will render it inoperable...until those attempts are stopped or removed. It can even be configured to notify you whenever someone tries to do anything with the script other than run it...i.e. hacking or modification attempts.
4. Ensures absolutely NO ONE can make copies of it. No one can copy your script to a secluded location and try to screw around with it to see how it works. All copies of the script must be links to the original location which you specified during install (step 4).

NOTE:

This does not work for interactive scripts that prompts and waits on the user for a response. The values that are expected from the user should be hard-coded into the script. The encryption ensures no one can actually see those values so you need not worry about that.

RELATION:

The solution provided in this post answers your problem in the sense that it encrypts the actual script containing the password that you wanted to have encrypted. You get to leave the password as is (unencrypted) but the script that the password is in is so deeply obfuscated and encrypted that you can rest assured no one will be able to see it. And if attempts are made to try to pry into the script, you will receive email notifications about them.

Take any web application whether it is Gmail or Facebook or Instagram or any other web application, it's all about exchanging data or information between the end user and the application or the UI and the back end application. Even in Spring MVC world there are two ways to exchange data:

1. from the Controller to the UI, and
2. from the UI to the Controller.

What we are interested here is how the data is communicated from the UI to Controller. This can also be done in 2 ways:

1. Using an HTML Form
2. Using Query Parameters.

Using an HTML Form: Consider the below scenario,

When we submit the form data from the web browser, we can access that data in our Controller class as an object. When we submit an HTML form, the Spring Container does four things. It will,

1. first read all the data that is submitted that comes in the request using the request.getParameter method.
2. once it reads them, it will convert them into the appropriate Java type using integer.parseInt, double.parseDouble and all the other parse methods that are available based on the data type of the data.
3. once parsed, it will create a object of the model class that we created. For example, in this scenario, it is the user information that is being submitted and we create a class called User, which the Container will create an object of and it will set all the values that come in automatically into that object.
4. it will then handover that object by setting the values to the Controller.

To get this whole thing to work, we'll have to follow certain steps.

We first need to define a model class, like User, in which the number of fields should exactly match the number of fields in the HTML form. Also, the names that we use in the HTML form should match the names that we have in the Java class. These two are very important. Names should match, the number of fields in the form should match the number of fields in the class that we create. Once we do that, the Container will automatically read the data that comes in, creates an object of this model, sets the values and it hands it over to the Controller. To read those values inside the Controller, we use the @ModelAttribute annotation on the method parameters. When we create methods in the Controller, we are going to use the @ModelAttribute and add a parameter to it which will automatically have this object given by the Container.

Here is an example code for registering an user:

@RequestMapping(value = "registerUser", method = RequestMethod.POST)
public String registerUser(@ModelAttribute("user") User user, ModelMap model) {
    model.addAttribute("user", user);
    return "regResult";
}

Hope this diagrammatic explanation helped!

android:inputMethod

is deprecated, instead use inputType :

 android:inputType="numberPassword"

date.setTime( date.getTime() + days * 86400000 );

Use cssText

nFilter.style.cssText +=';width:330px;float:left;';

ISO standards cost money, from a moderate amount (for a PDF version), to a bit more (for a book version).

While they aren't finalised however, they can usually be found online, as drafts. Most of the times the final version doesn't differ significantly from the last draft, so while not perfect, they'll suit just fine.

• C++ 0x draft

I'm assuming you are using jQuery or something similar. If you are using jQuery, then the following should work:

<html>
<head>
   <script src="jquery.js" type="text/javascript"></script>
</head>
<body>
   content
</body>
<script type="text/javascript">
   $("body").load(url);
</script>
</html>

Perhaps you don't have to include the single quotes:

curl --request POST 'http://localhost/Service' --data "path=/xyz/pqr/test/&fileName=1.doc"

Update: Reading curl's manual, you could actually separate both fields with two --data:

curl --request POST 'http://localhost/Service' --data "path=/xyz/pqr/test/" --data "fileName=1.doc"

You could also try --data-binary:

curl --request POST 'http://localhost/Service' --data-binary "path=/xyz/pqr/test/" --data-binary "fileName=1.doc"

And --data-urlencode:

curl --request POST 'http://localhost/Service' --data-urlencode "path=/xyz/pqr/test/" --data-urlencode "fileName=1.doc"

If you are only trying to change the include paths for a project and not for all solutions then in Visual Studio 2008 do this: Right-click on the name of the project in the Solution Navigator. From the popup menu select Properties. In the property pages dialog select Configuration Properties->C/C++/General. Click in the text box next to the "Additional Include Files" label and browse for the appropriate directory. Select OK.

What annoys me is that some of the answers to the original question asked do not apply to the version of Visual Studio that was mentioned.

Honestly, the best way to limit files is on the server side. People can spoof file type on the client so taking in the full file name at server transfer time, parsing out the file type, and then returning a message is usually the best bet.

I made this test-case based on @Downgoat's answer.
It runs on NodeJS. This is Downgoat's code where the async part is provided by a setTimeout() call.

'use strict';
const util = require( 'util' );

class AsyncConstructor{

  constructor( lapse ){
    this.qqq = 'QQQ';
    this.lapse = lapse;
    return ( async ( lapse ) => {
      await this.delay( lapse );
      return this;
    })( lapse );
  }

  async delay(ms) {
    return await new Promise(resolve => setTimeout(resolve, ms));
  }

}

let run = async ( millis ) => {
  // Instatiate with await, inside an async function
  let asyncConstructed = await new AsyncConstructor( millis );
  console.log( 'AsyncConstructor: ' + util.inspect( asyncConstructed ));
};

run( 777 );

My use case is DAOs for the server-side of a web application.
As I see DAOs, they are each one associated to a record format, in my case a MongoDB collection like for instance a cook.
A cooksDAO instance holds a cook's data.
In my restless mind I would be able to instantiate a cook's DAO providing the cookId as an argument, and the instantiation would create the object and populate it with the cook's data.
Thus the need to run async stuff into the constructor.
I wanted to write:

let cook = new cooksDAO( '12345' );  

to have available properties like cook.getDisplayName().
With this solution I have to do:

let cook = await new cooksDAO( '12345' );  

which is very similar to the ideal.
Also, I need to do this inside an async function.

My B-plan was to leave the data loading out of the constructor, based on @slebetman suggestion to use an init function, and do something like this:

let cook = new cooksDAO( '12345' );  
async cook.getData();

which doesn't break the rules.

The problem I had accessing the sqlite db file I created in my java (jersey) server had solely to due with path. Some of the docs say the jdbc connect url should look like "jdbc:sqlite://path-to-file/sample.db". I thought the double-slash was part of a htt protocol-style path and would map properly when deployed, but in actuality, it's an absolute or relative path. So, when I placed the file at the root of the WebContent folder (tomcat project), a uri like this worked "jdbc:sqlite:sample.db".

The one thing that was throwing me was that when I was stepping through the debugger, I received a message that said "opening db: ... permission denied". I thought it was a matter of file system permissions or perhaps sql user permissions. After finding out that SQLite doesn't have the concept of roles/permissions like MySQL, etc, I did eventually change the file permissions before I came to what I believe was the correct solution, but I think it was just a bad message (i.e. permission denied, instead of File not found).

Hope this helps someone.

You say that if int(splitLine[0]) > int(lastUnix): is causing the trouble, but you don't actually show anything which suggests that. I think this line is the problem instead:

print 'Pulled', + stock

Do you see why this line could cause that error message? You want either

>>> stock = "AAAA"
>>> print 'Pulled', stock
Pulled AAAA

or

>>> print 'Pulled ' + stock
Pulled AAAA

not

>>> print 'Pulled', + stock
PulledTraceback (most recent call last):
  File "<ipython-input-5-7c26bb268609>", line 1, in <module>
    print 'Pulled', + stock
TypeError: bad operand type for unary +: 'str'

You're asking Python to apply the + symbol to a string like +23 makes a positive 23, and she's objecting.

First, create the data for the chart

H <- c(1.964138757, 1.729143013,    1.713273714,    1.706771799,    1.67977205)
M <- c("SP105", "SP30", "SP244", "SP31",    "SP147")

Second, give the name for a chart file

png(file = "Bargraph.jpeg", width = 500, height = 300)

Third, Plot the bar chart

barplot(H,names.arg=M,ylab="Degree ", col= rainbow(5), las=2, border = 0, cex.lab=1, cex.axis=1, font=1,col.axis="black")
title(xlab="Service Providers", line=4, cex.lab=1)

Finally, save the file

dev.off()

Output:

For Windows containers use

docker exec <container> ipconfig

where <container> is the name or the id of the container.

You can use docker ps to find the id of the container.

Constructor The constructor is a method that's automatically called during the creation of an object from a class. ... Simply put, the constructor aids in constructing things. In React, the constructor is no different. It can be used to bind event handlers to the component and/or initializing the local state of the component.Jan 23, 2019

getInitialState In ES6 classes, you can define the initial state by assigning this.state in the constructor:

Look at this example

var Counter = createReactClass({
  getInitialState: function() {
    return {count: this.props.initialCount};
  },
  // ...
});

With createReactClass(), you have to provide a separate getInitialState method that returns the initial state:

I am using Ubuntu and my sessions are stored in /var/lib/php5.

Using libraries. This is one of them. Just add its dependency and put below code in xml before each elements that needs ripple effect:

<com.balysv.materialripple.MaterialRippleLayout
android:id="@+id/ripple"
android:layout_width="match_parent"
android:layout_height="wrap_content">

You need to turn on Show All Files option on solution pane toolbar and include this file manually.

Also can use without parent

say router definition like:

{path:'/about',    name: 'About',   component: AboutComponent}

then can navigate by name instead of path

goToAboutPage() {
    this.router.navigate(['About']); // here "About" is name not path
}

Updated for V2.3.0

In Routing from v2.0 name property no more exist. route define without name property. so you should use path instead of name. this.router.navigate(['/path']) and no leading slash for path so use path: 'about' instead of path: '/about'

router definition like:

{path:'about', component: AboutComponent}

then can navigate by path

goToAboutPage() {
    this.router.navigate(['/about']); // here "About" is path
}

gitweb will allow you to browse through the code (and changes) via a browser.

http://git.or.cz/gitwiki/Gitweb

(Don't know if someone has already setup a public gitweb for Android, but it's probably not too hard.)

The only way to access classes in the default package is from another class in the default package. In that case, don't bother to import it, just refer to it directly.

To align one flex child to the right set it withmargin-left: auto;

From the flex spec:

One use of auto margins in the main axis is to separate flex items into distinct "groups". The following example shows how to use this to reproduce a common UI pattern - a single bar of actions with some aligned on the left and others aligned on the right.

.wrap div:last-child {
  margin-left: auto;
}

Updated fiddle

.wrap {_x000D_
  display: flex;_x000D_
  background: #ccc;_x000D_
  width: 100%;_x000D_
  justify-content: space-between;_x000D_
}_x000D_
.wrap div:last-child {_x000D_
  margin-left: auto;_x000D_
}_x000D_
.result {_x000D_
  background: #ccc;_x000D_
  margin-top: 20px;_x000D_
}_x000D_
.result:after {_x000D_
  content: '';_x000D_
  display: table;_x000D_
  clear: both;_x000D_
}_x000D_
.result div {_x000D_
  float: left;_x000D_
}_x000D_
.result div:last-child {_x000D_
  float: right;_x000D_
}

<div class="wrap">_x000D_
  <div>One</div>_x000D_
  <div>Two</div>_x000D_
  <div>Three</div>_x000D_
</div>_x000D_
_x000D_
<!-- DESIRED RESULT -->_x000D_
<div class="result">_x000D_
  <div>One</div>_x000D_
  <div>Two</div>_x000D_
  <div>Three</div>_x000D_
</div>

Note:

You could achieve a similar effect by setting flex-grow:1 on the middle flex item (or shorthand flex:1) which would push the last item all the way to the right. (Demo)

The obvious difference however is that the middle item becomes bigger than it may need to be. Add a border to the flex items to see the difference.

Demo

.wrap {_x000D_
  display: flex;_x000D_
  background: #ccc;_x000D_
  width: 100%;_x000D_
  justify-content: space-between;_x000D_
}_x000D_
.wrap div {_x000D_
  border: 3px solid tomato;_x000D_
}_x000D_
.margin div:last-child {_x000D_
  margin-left: auto;_x000D_
}_x000D_
.grow div:nth-child(2) {_x000D_
  flex: 1;_x000D_
}_x000D_
.result {_x000D_
  background: #ccc;_x000D_
  margin-top: 20px;_x000D_
}_x000D_
.result:after {_x000D_
  content: '';_x000D_
  display: table;_x000D_
  clear: both;_x000D_
}_x000D_
.result div {_x000D_
  float: left;_x000D_
}_x000D_
.result div:last-child {_x000D_
  float: right;_x000D_
}

<div class="wrap margin">_x000D_
  <div>One</div>_x000D_
  <div>Two</div>_x000D_
  <div>Three</div>_x000D_
</div>_x000D_
_x000D_
<div class="wrap grow">_x000D_
  <div>One</div>_x000D_
  <div>Two</div>_x000D_
  <div>Three</div>_x000D_
</div>_x000D_
_x000D_
<!-- DESIRED RESULT -->_x000D_
<div class="result">_x000D_
  <div>One</div>_x000D_
  <div>Two</div>_x000D_
  <div>Three</div>_x000D_
</div>

Use this function:

function repeatElement(element, count) {
    return Array(count).fill(element)
}

>>> repeatElement('#', 5).join('')
"#####"

Or for a more compact version:

const repeatElement = (element, count) =>
    Array(count).fill(element)

>>> repeatElement('#', 5).join('')
"#####"

Or for a curry-able version:

const repeatElement = element => count =>
    Array(count).fill(element)

>>> repeatElement('#')(5).join('')
"#####"

You can use this function with a list:

const repeatElement = (element, count) =>
    Array(count).fill(element)

>>> ['a', 'b', ...repeatElement('c', 5)]
['a', 'b', 'c', 'c', 'c', 'c', 'c']

You can use:

<input type="number" step="any" min="0" max="100" value="22.33">

I agree with Kevin and others, using a plugin for this is pointless.

window.scrollTo(0, $("#element").offset().top);

Package organization or package structuring is usually a heated discussion. Below are some simple guidelines for package naming and structuring:

• Follow java package naming conventions
• Structure your packages according to their functional role as well as their business role
  • Break down your packages according to their functionality or modules. e.g. com.company.product.modulea
  • Further break down could be based on layers in your software. But don't go overboard if you have only few classes in the package, then it makes sense to have everything in the package. e.g. com.company.product.module.web or com.company.product.module.util etc.
  • Avoid going overboard with structuring, IMO avoid separate packaging for exceptions, factories, etc. unless there's a pressing need.
• If your project is small, keep it simple with few packages. e.g. com.company.product.model and com.company.product.util, etc.
• Take a look at some of the popular open source projects out there on Apache projects. See how they use structuring, for various sized projects.
• Also consider build and distribution when naming ( allowing you to distribute your api or SDK in a different package, see servlet api)

After a few experiments and trials you should be able to come up with a structuring that you are comfortable with. Don't be fixated on one convention, be open to changes.

Works in Ubuntu 20.04

Add this line inside <policymap>

<policy domain="module" rights="read|write" pattern="{PS,PDF,XPS}" />

Comment these lines:

  <!--
  <policy domain="coder" rights="none" pattern="PS" />
  <policy domain="coder" rights="none" pattern="PS2" />
  <policy domain="coder" rights="none" pattern="PS3" />
  <policy domain="coder" rights="none" pattern="EPS" />
  <policy domain="coder" rights="none" pattern="PDF" />
  <policy domain="coder" rights="none" pattern="XPS" />
   -->

DefaultRoute and NotFoundRoute were removed in react-router 1.0.0.

I'd like to emphasize that the default route with the asterisk has to be last in the current hierarchy level to work. Otherwise it will override all other routes that appear after it in the tree because it's first and matches every path.

For react-router 1, 2 and 3

If you want to display a 404 and keep the path (Same functionality as NotFoundRoute)

<Route path='*' exact={true} component={My404Component} />

If you want to display a 404 page but change the url (Same functionality as DefaultRoute)

<Route path='/404' component={My404Component} />
<Redirect from='*' to='/404' />

Example with multiple levels:

<Route path='/' component={Layout} />
    <IndexRoute component={MyComponent} />
    <Route path='/users' component={MyComponent}>
        <Route path='user/:id' component={MyComponent} />
        <Route path='*' component={UsersNotFound} />
    </Route>
    <Route path='/settings' component={MyComponent} />
    <Route path='*' exact={true} component={GenericNotFound} />
</Route>

For react-router 4 and 5

Keep the path

<Switch>
    <Route exact path="/users" component={MyComponent} />
    <Route component={GenericNotFound} />
</Switch>

Redirect to another route (change url)

<Switch>
    <Route path="/users" component={MyComponent} />
    <Route path="/404" component={GenericNotFound} />
    <Redirect to="/404" />
</Switch>

The order matters!

You can open and read .csv file using fopen ,fscanf functions ,but the important thing is to parse the data.Simplest way to parse the data using delimiter.In case of .csv , delimiter is ','.

Suppose your data1.csv file is as follows :

A,45,76,01
B,77,67,02
C,63,76,03
D,65,44,04

you can tokenize data and store in char array and later use atoi() etc function for appropriate conversions

FILE *fp;
char str1[10], str2[10], str3[10], str4[10];

fp = fopen("G:\\data1.csv", "r");
if(NULL == fp)
{
    printf("\nError in opening file.");
    return 0;
}
while(EOF != fscanf(fp, " %[^,], %[^,], %[^,], %s, %s, %s, %s ", str1, str2, str3, str4))
{
    printf("\n%s %s %s %s", str1, str2, str3, str4);
}
fclose(fp);

[^,], ^ -it inverts logic , means match any string that does not contain comma then last , says to match comma that terminated previous string.

Or simply:

System.out.println("Some text");

If you are using Netty and want to use a map with primitive int type keys, you can use its IntObjectHashMap

Some of the reasons to use primitive type collections:

• improve performance by having specialized code
• reduce garbage that can put pressure on the GC

The question of specialized vs generalized collections can make or break programs with high throughput requirements.

You can actually create a simple Array with Alert Dialog like this.

 val sexArray = arrayOf("Male", "Female")
 val selectedPosition = 0

 AlertDialog.Builder(requireContext())
    .setSingleChoiceItems(sexArray, 0) { dialog, position ->
        val selectedSex = sexArray[position]
    }.show()

The size of an array can't be changed. If you want a bigger array you have to create a new array.

However, a better solution would be to use an (Array)List which can grow as you need it. The method ArrayList.toArray(T[] a) returns an array if you need to use an array in your application.

I found in a class file outside the scope of the Page, the above way (which I always have used) didn't work.
I found a workaround in this "context" as follows:

HttpContext.Current.Session.Add("currentUser", appUser);

and

(AppUser) HttpContext.Current.Session["currentUser"]

Otherwise the compiler was expecting a string when I pointed the object at the session object.

There is a pretty nice infinite scroll plugin here

I've never programmed one myself, but I would imagine this is how it works.

1. An event is bound to the the window scrolling

   $(window).scroll(myInfinteScrollFunction);
   

2. The called function checks if scroll top is greater than the window size

   function myInfiniteScrollFunction() {  
       if($(window).scrollTop() == $(window).height())  
       makeAjaxRequest();  
   }
   

3. An AJAX request is made, specifying which result # to start at, how many to grab, and any other parameters necessary for the data pull.

   $.ajax({
       type: "POST",
       url:  "myAjaxFile.php",
       data: {"resultNum": 30, "numPerPage": 50, "query": "interesting%20icons" },
       success: myInfiniteLoadFunction(msg)
   });
   

4. The ajax returns some (most-likely JSON formatted) content, and passes them into the loadnig function.

Hope that makes sense.

I used tmux-powerline to fully pimp my tmux status bar. I was googling for a way to change to background of the status bar when your typing a tmux command. When I stumbled on this post I thought I should mention it for completeness.

Update: This project is in a maintenance mode and no future functionality is likely to be added. tmux-powerline, with all other powerline projects, is replaced by the new unifying powerline. However this project is still functional and can serve as a lightweight alternative for non-python users.

If Maven update snapshot doesn't work and if you have Spring Tooling, one interesting way is to remove

• Right-click on your project then Maven > Disable Maven Nature
• Right-click on your project then Spring Tools > Update Maven Dependencies
• After "BUILD SUCCESS", Right-click on your project then Configure > Convert Maven Project

Note: Maven update snapshot sometimes stops working if you use anything else i.e. eclipse:eclipse or Spring Tooling

I found that it would work to reset the month to January for both dates (the provided date and the present):

> moment("02/26/1978", "MM/DD/YYYY").month(0).from(moment().month(0))
"34 years ago"

If you need to open the DevTools press ctrl-shift-i.

If the DevTools window is already opened you can use the ctrl-shift-d shortcut; it switches the window into a detached mode.

For example in my case the electron application window (Chrome) is really small.

It's not possible to use any other suggestions except the ctrl-shift-d shortcut

listview.setOnItemClickListener(new OnItemClickListener(){

    @Override
    public void onItemClick(AdapterView<?>adapter,View v, int position){
    Intent intent;
    switch(position){
      case 0:
        intent = new Intent(Activity.this,firstActivity.class);
        break;
      case 1:
        intent = new Intent(Activity.this,secondActivity.class);
        break;
     case 2:
        intent = new Intent(Activity.this,thirdActivity.class);
        break;
    //add more if you have more items in listview
   //0 is the first item 1 second and so on...
    }
    startActivity(intent);
  }

});

Create a new AVD with the AVD Manager and set the Target to API Level 7. Try running your application with that AVD. Additionally, make sure that your min sdk in your Manifest file is at least set to 7.

Seems PyAudio is supported by Python 2.7, 3.4, 3.5, and 3.6. Refer https://people.csail.mit.edu/hubert/pyaudio/

Please suggest if there is any alternate way to install PyAudio on Python 3.8.2

Try this:

<style>
.btn-disable {
    display:inline-block;
    pointer-events: none;       
}
</style>

The below code worked.

    getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

Add this code before calling videoView.start(). With this the video activity runs in full screen mode in most of the cases. But if the title bar is still displayed then change your theme in your manifest to this.

    android:theme="@style/Theme.AppCompat.NoActionBar">

• System is a class in java.lang package

• out is a static object of PrintStream class in java.io package

• println() is a method in the PrintStream class

I was getting the same error; I had previously installed the google-play-services_lib for Google Maps (and it was working fine) but then when I later tried adding the meta-data entry to my Manifest I was getting the error. I tried all the above suggestions but nothing would link them properly; I finally removed the link from my project (project-properties-Android, remove google-play-services_lib library), then removed from Eclipse workspace, deleted the files on the disk, and finally used the SDK manager to reinstall from scratch.

That seemed to finally do the trick; now Eclipse has decided to allow me to leave the meta-data entry with no errors.

Assuming your stream is not backed by a socket (so you can't use Socket.setSoTimeout()), I think the standard way of solving this type of problem is to use a Future.

Suppose I have the following executor and streams:

    ExecutorService executor = Executors.newFixedThreadPool(2);
    final PipedOutputStream outputStream = new PipedOutputStream();
    final PipedInputStream inputStream = new PipedInputStream(outputStream);

I have writer that writes some data then waits for 5 seconds before writing the last piece of data and closing the stream:

    Runnable writeTask = new Runnable() {
        @Override
        public void run() {
            try {
                outputStream.write(1);
                outputStream.write(2);
                Thread.sleep(5000);
                outputStream.write(3);
                outputStream.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    };
    executor.submit(writeTask);

The normal way of reading this is as follows. The read will block indefinitely for data and so this completes in 5s:

    long start = currentTimeMillis();
    int readByte = 1;
    // Read data without timeout
    while (readByte >= 0) {
        readByte = inputStream.read();
        if (readByte >= 0)
            System.out.println("Read: " + readByte);
    }
    System.out.println("Complete in " + (currentTimeMillis() - start) + "ms");

which outputs:

Read: 1
Read: 2
Read: 3
Complete in 5001ms

If there was a more fundamental problem, like the writer not responding, the reader would block for ever. If I wrap the read in a future, I can then control the timeout as follows:

    int readByte = 1;
    // Read data with timeout
    Callable<Integer> readTask = new Callable<Integer>() {
        @Override
        public Integer call() throws Exception {
            return inputStream.read();
        }
    };
    while (readByte >= 0) {
        Future<Integer> future = executor.submit(readTask);
        readByte = future.get(1000, TimeUnit.MILLISECONDS);
        if (readByte >= 0)
            System.out.println("Read: " + readByte);
    }

which outputs:

Read: 1
Read: 2
Exception in thread "main" java.util.concurrent.TimeoutException
    at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:228)
    at java.util.concurrent.FutureTask.get(FutureTask.java:91)
    at test.InputStreamWithTimeoutTest.main(InputStreamWithTimeoutTest.java:74)

I can catch the TimeoutException and do whatever cleanup I want.

If you are very new to Android like I am this can be a little tricky. Make sure you call:

TextView myTextView = (TextView) findViewById(R.id.textView);
Typeface typeface=Typeface.createFromAsset(getAssets(), "fonts/your font.ttf");
myTextView.setTypeface(typeface);

method within a method such as onCreate.

Put this code in your viewDidLoad():

textField.delegate = self

let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: 20, height: self.textField.frame.height))
textField.leftView = paddingView
textField.leftViewMode = UITextFieldViewMode.always

It works for me :)

Try following steps:

1. Type ipconfig (or ifconfig on Linux) at command prompt. This will give you the IP address of your own machine. For example, your machine's IP address is 192.168.1.6. So your broadcast IP address is 192.168.1.255.
2. Ping your broadcast IP address ping 192.168.1.255 (may require -b on Linux)
3. Now type arp -a. You will get the list of all IP addresses on your segment.

the dict() literal is nice when you are copy pasting values from something else (none python) For example a list of environment variables. if you had a bash file, say

FOO='bar'
CABBAGE='good'

you can easily paste then into a dict() literal and add comments. It also makes it easier to do the opposite, copy into something else. Whereas the {'FOO': 'bar'} syntax is pretty unique to python and json. So if you use json a lot, you might want to use {} literals with double quotes.

Does not equal. The opposite of =, equivalent to !=.

Also, for everyone's info, this can return a non-zero number of rows. I see the OP has reformatted his question so it's a bit clearer, but as far as I can tell, this finds records where product ID is among those found in order #605, as is quantity, but it's not actually order #605. If order #605 contains 1 apple, 2 bananas and 3 crayons, #604 should match if it contains 2 apples (but not 3 dogs). It just won't match order #605. (And if ordid is unique, then it would find exact duplicates.)

One thing to note is that the two are actually very related. Linear SVMs are equivalent to single-layer NN's (i.e., perceptrons), and multi-layer NNs can be expressed in terms of SVMs. See here for some details.

all, I solved a problem and wanted to share it:

I had this error <> The issue was in that in my statement:

alter table system_registro_de_modificacion add foreign key (usuariomodificador_id) REFERENCES Usuario(id) On delete restrict;

I had incorrectly written the CASING: it works in Windows WAMP, but in Linux MySQL it is more strict with the CASING, so writting "Usuario" instead of "usuario" (exact casing), generated the error, and was corrected simply changing the casing.

When non of the above works, and still mails looks like ª הודפסה ×•× ×©×œ:

$mail->addCustomHeader('Content-Type', 'text/plain;charset=utf-8');
$mail->Subject = '=?UTF-8?B?' . base64_encode($subject) . '?=';;

I link all Qt stuff statically to the generic Linux builds of my open source projects. It makes life a bit easier. You just need to build static versions of Qt libraries first. Of course this cannot be applied to closed source software due to licensing issues. The deployment of Qt5 apps on Linux is currently a bit problematic, because Ubuntu 12.04, for example, doesn't have Qt5 libraries in the package repositories.

IF EXISTS (SELECT * FROM sys.types WHERE is_table_type = 1 AND name = 'MyType')
    --stuff

sys.types... they aren't schema-scoped objects so won't be in sys.objects

Update, Mar 2013

You can use TYPE_ID too

For fun, I solved this with reduce and filter. In real life I would probably use Aarons answere here. Nevertheless I think my version isn't totally unreadable or inefficient:

[' ','_','-','.',',',':','@'].reduce(
(segs, sep) => segs.reduce(
(out, seg) => out.concat(seg.split(sep)), []), 
['E-mail Address: [email protected], Phone Number: +1-800-555-0011']
).filter(x => x)

Or as a function:

function msplit(str, seps) {
  return seps.reduce((segs, sep) => segs.reduce(
    (out, seg) => out.concat(seg.split(sep)), []
  ), [str]).filter(x => x);
}

This will output:

['E','mail','Address','user','domain','com','0','Phone','Number','+1','800','555','0011']

Without the filter at the end you would get empty strings in the array where two different separators are next to each other.

There is a symbol before help menu on xcode which has Edit user script. On Un/Comment Selection under comments section change my $cCmt = "//"; to my $cCmt = "#"; or whatever your IDE works with. Then by selecting lines and command + / (It's my xcode default) you can comment and uncomment the selected lines.

Editing the first line of this file worked to me:

MBP-de-Jose:~ josejunior$ which python3

/usr/local/Cellar/python/3.7.3/bin/python3

MBP-de-Jose:~ josejunior$

before

#!/usr/local/opt/python/bin/python3.7

after

#!/usr/local/Cellar/python/3.7.3/bin/python3

In my case, I had this problem in my spec file, while running my tests.

I had to change ngIf to [hidden]

<app-loading *ngIf="isLoading"></app-loading>

to

<app-loading [hidden]="!isLoading"></app-loading>

Perhaps you could handle OnSubmit and set a flag that you later check in your OnBeforeUnload handler.

If using tensorflow, there is one_hot():

import tensorflow as tf
import numpy as np

a = np.array([1, 0, 3])
depth = 4
b = tf.one_hot(a, depth)
# <tf.Tensor: shape=(3, 3), dtype=float32, numpy=
# array([[0., 1., 0.],
#        [1., 0., 0.],
#        [0., 0., 0.]], dtype=float32)>

Root cause: Corrupted user profile of user account used to start database

The main thread here seems to be a corrupted user account profile for the account that is used to start the DB engine. This is the account that was specified for the "SQL Server Database" engine during installation. In the setup event log, it's also indicated by the following entry:

SQLSVCACCOUNT:                 NT AUTHORITY\SYSTEM

According to the link provided by @royki:

The root cause of this issue, in most cases, is that the profile of the user being used for the service account (in my case it was local system) is corrupted.

This would explain why other respondents had success after changing to different accounts:

• bmjjr suggests changing to "NT AUTHORITY\NETWORK SERVICE"
• comments to @bmjjr indicate different accounts "I used NT AUTHORITY\LOCAL SERVICE. That helped too"
• @Julio Nobre had success with "NT Authority\System "

Fix: reset the corrupt user profile

To fix the user profile that's causing the error, follow the steps listed KB947215.

The main steps from KB947215 are summarized as follows:-

1. Open regedit
2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList

3. Navigate to the SID for the corrupted profile

   To find the SID, click on each SID GUID, review the value for the ProfileImagePath value, and see if it's the correct account. For system accounts, there's a different way to know the SID for the account that failed:

The main system account SIDs of interest are:

SID          Name               Also Known As
S-1-5-18     Local System       NT AUTHORITY\SYSTEM
S-1-5-19     LocalService       NT AUTHORITY\LOCAL SERVICE
S-1-5-20     NetworkService     NT AUTHORITY\NETWORK SERVICE

For information on additional SIDs, see Well-known security identifiers in Windows operating systems.

4. If there are two entries (e.g. with a .bak) at the end for the SID in question, or the SID in question ends in .bak, ensure to follow carefully the steps in the KB947215 article.
5. Reset the values for RefCount and State to be 0.
6. Reboot.
7. Retry the SQL Server installation.

Added a new answer to display the code formatted:

The thing is that you were checking for document.referer, because you were in ff it was returning always true, then it was navigating to http://mysite.com. Try the following:

function backAway(){
    if (document.referrer) {
        //firefox, chrome, etc..
        i = 0;
    } else {
        // under ie
        i = 1;
    }
    if (history.length>i)
    {
        // there are items in history property
        history.back();
    } else {
        window.location = 'http://www.mysite.com/';
    }
    return false;
}

You should be able to open terminal and just type

mysql -v

Why not store the function itself? myvar = mypackage.mymodule.myfunction is much cleaner.

In some cases, this error occurs when calling an async method without the await keyword, which can simply be solved by adding await before the method call. however, the answer might not be related to the mentioned question but it can help solving a similar error.

Swift 3, Alamofire 4.4, and SwiftyJSON:

Alamofire.request(url, method: .get)
  .responseJSON { response in
      if response.data != nil {
        let json = JSON(data: response.data!)
        let name = json["people"][0]["name"].string
        if name != nil {
          print(name!)
        }
      }
  }

That will parse this JSON input:

{
  people: [
    { name: 'John' },
    { name: 'Dave' }
  ]
}

The accepted solution only works on arrays, but not objects or associative arrays. Unfortunately, since Angular depends on the JavaScript implementation of array enumeration, the order of object properties cannot be consistently controlled. Some browsers may iterate through object properties lexicographically, but this cannot be guaranteed.

e.g. Given the following assignment:

$scope.cards = {
  "card2": {
    values: {
      opt1: 9,
      opt2: 12
    }
  },
  "card1": {
    values: {
      opt1: 9,
      opt2: 11
    }
  }
};

and the directive <ul ng-repeat="(key, card) in cards | orderBy:myValueFunction">, ng-repeat may iterate over "card1" prior to "card2", regardless of sort order.

To workaround this, we can create a custom filter to convert the object to an array, and then apply a custom sort function before returning the collection.

myApp.filter('orderByValue', function () {
  // custom value function for sorting
  function myValueFunction(card) {
    return card.values.opt1 + card.values.opt2;
  }

  return function (obj) {
    var array = [];
    Object.keys(obj).forEach(function (key) {
      // inject key into each object so we can refer to it from the template
      obj[key].name = key;
      array.push(obj[key]);
    });
    // apply a custom sorting function
    array.sort(function (a, b) {
      return myValueFunction(b) - myValueFunction(a);
    });
    return array;
  };
});

We cannot iterate over (key, value) pairings in conjunction with custom filters (since the keys for arrays are numerical indexes), so the template should be updated to reference the injected key names.

<ul ng-repeat="card in cards | orderByValue">
    <li>{{card.name}} {{value(card)}}</li>
</ul>

Here is a working fiddle utilizing a custom filter on an associative array: http://jsfiddle.net/av1mLpqx/1/

Reference: https://github.com/angular/angular.js/issues/1286#issuecomment-22193332

This worked for me:

   Espresso.onView(ViewMatchers.withId(R.id.radiobutton)).check(ViewAssertions.matches(isChecked()))

Adding some code snippets to support the accepted answer.

Directory structure :

setup/
 |__docker/DockerFile
 |__target/scripts/<myscripts.sh>
src/
 |__<my source files>

Docker file entry:

RUN mkdir -p /home/vagrant/dockerws/chatServerInstaller/scripts/
RUN mkdir -p /home/vagrant/dockerws/chatServerInstaller/src/
WORKDIR /home/vagrant/dockerws/chatServerInstaller

#Copy all the required files from host's file system to the container file system.
COPY setup/target/scripts/install_x.sh scripts/
COPY setup/target/scripts/install_y.sh scripts/
COPY src/ src/

Command used to build the docker image

docker build -t test:latest -f setup/docker/Dockerfile .

For people still looking for this answer, since configuration.locale was deprecated from API 24, you can now use:

configuration.setLocale(locale);

Take in consideration that the minSkdVersion for this method is API 17.

Full example code:

@SuppressWarnings("deprecation")
private void setLocale(Locale locale){
    SharedPrefUtils.saveLocale(locale); // optional - Helper method to save the selected language to SharedPreferences in case you might need to attach to activity context (you will need to code this)
    Resources resources = getResources();
    Configuration configuration = resources.getConfiguration();
    DisplayMetrics displayMetrics = resources.getDisplayMetrics();
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1){
        configuration.setLocale(locale);
    } else{
        configuration.locale=locale;
    }
    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.N){
        getApplicationContext().createConfigurationContext(configuration);
    } else {
        resources.updateConfiguration(configuration,displayMetrics);
    }
}

Don't forget that, if you change the locale with a running Activity, you will need to restart it for the changes to take effect.

EDIT 11th MAY 2018

As from @CookieMonster's post, you might have problems keeping the locale change in higher API versions. If so, add the following code to your Base Activity so that you update the context locale on every Activity creation:

@Override
protected void attachBaseContext(Context base) {
     super.attachBaseContext(updateBaseContextLocale(base));
}

private Context updateBaseContextLocale(Context context) {
    String language = SharedPrefUtils.getSavedLanguage(); // Helper method to get saved language from SharedPreferences
    Locale locale = new Locale(language);
    Locale.setDefault(locale);

    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.N) {
        return updateResourcesLocale(context, locale);
    }

    return updateResourcesLocaleLegacy(context, locale);
}

@TargetApi(Build.VERSION_CODES.N_MR1)
private Context updateResourcesLocale(Context context, Locale locale) {
    Configuration configuration = new Configuration(context.getResources().getConfiguration())
    configuration.setLocale(locale);
    return context.createConfigurationContext(configuration);
}

@SuppressWarnings("deprecation")
private Context updateResourcesLocaleLegacy(Context context, Locale locale) {
    Resources resources = context.getResources();
    Configuration configuration = resources.getConfiguration();
    configuration.locale = locale;
    resources.updateConfiguration(configuration, resources.getDisplayMetrics());
    return context;
}

If you use this, don't forget to save the language to SharedPreferences when you set the locale with setLocate(locale)

EDIT 7th APRIL 2020

You might be experiencing issues in Android 6 and 7, and this happens due to an issue in the androidx libraries while handling the night mode. For this you will also need to override applyOverrideConfiguration in your base activity and update the configuration's locale in case a fresh new locale one is created.

Sample code:

@Override
public void applyOverrideConfiguration(Configuration overrideConfiguration) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && Build.VERSION.SDK_INT <= Build.VERSION_CODES.N_MR1) {
        // update overrideConfiguration with your locale  
        setLocale(overrideConfiguration) // you will need to implement this
    }
    super.applyOverrideConfiguration(overrideConfiguration);
} 

webRequest.ContentType = "application/x-www-form-urlencoded";

1. Where does application/x-www-form-urlencoded's name come from?

   If you send HTTP GET request, you can use query parameters as follows:

   http://example.com/path/to/page?name=ferret&color=purple

   The content of the fields is encoded as a query string. The application/x-www-form- urlencoded's name come from the previous url query parameter but the query parameters is in where the body of request instead of url.

   The whole form data is sent as a long query string.The query string contains name- value pairs separated by & character

   e.g. field1=value1&field2=value2

2. It can be simple request called simple - don't trigger a preflight check

   Simple request must have some properties. You can look here for more info. One of them is that there are only three values allowed for Content-Type header for simple requests

   • application/x-www-form-urlencoded
   • multipart/form-data
   • text/plain

3.For mostly flat param trees, application/x-www-form-urlencoded is tried and tested.

request.ContentType = "application/json; charset=utf-8";

1. The data will be json format.

axios and superagent, two of the more popular npm HTTP libraries, work with JSON bodies by default.

{
  "id": 1,
  "name": "Foo",
  "price": 123,
  "tags": [
    "Bar",
    "Eek"
  ],
  "stock": {
    "warehouse": 300,
    "retail": 20
  }
}

2. "application/json" Content-Type is one of the Preflighted requests.

Now, if the request isn't simple request, the browser automatically sends a HTTP request before the original one by OPTIONS method to check whether it is safe to send the original request. If itis ok, Then send actual request. You can look here for more info.

3. application/json is beginner-friendly. URL encoded arrays can be a nightmare!

Not an exact answer because you're using xml data and there is currently no pd.read_xml() function (as of v0.23.4), but pandas (starting with v0.21.0) can uncompress the file for you! Thanks Wes!

import pandas as pd
import os
fn = '../data/file_to_load.json.gz'
print(os.path.isfile(fn))
df = pd.read_json(fn, lines=True, compression='gzip')
df.tail()

If you type:

?sample

If will launch a help menu to explain what the parameters of the sample function mean.

I am not an expert, but here is some code I have:

data <- data.frame(matrix(rnorm(400), nrow=100))
splitdata <- split(data[1:nrow(data),],sample(rep(1:4,as.integer(nrow(data)/4))))
test <- splitdata[[1]]
train <- rbind(splitdata[[1]],splitdata[[2]],splitdata[[3]])

This will give you 75% train and 25% test.

It's easier to change the port in VMware Workstation:

1. Edit > Preferences;
2. Shared VMs tab;
3. Disable;
4. Change port;
5. Enable.

Done.

This is what worked for me on JQuery 1.3 and is showing on the first click/focus

function vincularDatePickers() {
    $('.mostrar_calendario').live('click', function () {
        $(this).datepicker({ showButtonPanel: true, changeMonth: true, changeYear: true, showOn: 'focus' }).focus();
    });
}

this needs that your input have the class 'mostrar_calendario'

Live is for JQuery 1.3+ for newer versions you need to adapt this to "on"

See more about the difference here http://api.jquery.com/live/

Another way of solving this problem is using Reactive Extensions:

public static Task TimeoutAfter(this Task task, TimeSpan timeout, IScheduler scheduler)
{
        return task.ToObservable().Timeout(timeout, scheduler).ToTask();
}

Test up above using below code in your unit test, it works for me

TestScheduler scheduler = new TestScheduler();
Task task = Task.Run(() =>
                {
                    int i = 0;
                    while (i < 5)
                    {
                        Console.WriteLine(i);
                        i++;
                        Thread.Sleep(1000);
                    }
                })
                .TimeoutAfter(TimeSpan.FromSeconds(5), scheduler)
                .ContinueWith(t => { }, TaskContinuationOptions.OnlyOnFaulted);

scheduler.AdvanceBy(TimeSpan.FromSeconds(6).Ticks);

You may need the following namespace:

using System.Threading.Tasks;
using System.Reactive.Subjects;
using System.Reactive.Linq;
using System.Reactive.Threading.Tasks;
using Microsoft.Reactive.Testing;
using System.Threading;
using System.Reactive.Concurrency;

Would like to outline a brief semantic parallel to an already correct answer.

In 'simple' terms, a recursive CTE can be semantically defined as the following parts:

1: The CTE query. Also known as ANCHOR.

2: The recursive CTE query on the CTE in (1) with UNION ALL (or UNION or EXCEPT or INTERSECT) so the ultimate result is accordingly returned.

3: The corner/termination condition. Which is by default when there are no more rows/tuples returned by the recursive query.

A short example that will make the picture clear:

;WITH SupplierChain_CTE(supplier_id, supplier_name, supplies_to, level)
AS
(
SELECT S.supplier_id, S.supplier_name, S.supplies_to, 0 as level
FROM Supplier S
WHERE supplies_to = -1    -- Return the roots where a supplier supplies to no other supplier directly

UNION ALL

-- The recursive CTE query on the SupplierChain_CTE
SELECT S.supplier_id, S.supplier_name, S.supplies_to, level + 1
FROM Supplier S
INNER JOIN SupplierChain_CTE SC
ON S.supplies_to = SC.supplier_id
)
-- Use the CTE to get all suppliers in a supply chain with levels
SELECT * FROM SupplierChain_CTE

Explanation: The first CTE query returns the base suppliers (like leaves) who do not supply to any other supplier directly (-1)

The recursive query in the first iteration gets all the suppliers who supply to the suppliers returned by the ANCHOR. This process continues till the condition returns tuples.

UNION ALL returns all the tuples over the total recursive calls.

Another good example can be found here.

PS: For a recursive CTE to work, the relations must have a hierarchical (recursive) condition to work on. Ex: elementId = elementParentId.. you get the point.

Almost there. In your predicate, you want a relative path, so change

./book[/author/name = 'John'] 

to either

./book[author/name = 'John'] 

or

./book[./author/name = 'John'] 

and you will match your element. Your current predicate goes back to the root of the document to look for an author.

1. Open design view
2. Right click to textArea
3. open surround with option
4. select "...JScrollPane".

I have the same problem that you describe although I'm building up my LatLngBounds as proposed by above. The problem is that things are async and calling map.fitBounds() at the wrong time may leave you with a result like in the Q. The best way I found is to place the call in an idle handler like this:

google.maps.event.addListenerOnce(map, 'idle', function() {
    map.fitBounds(markerBounds);
});

• Remove .idea folder

  $rm -R .idea/
  

• Add rule

  $echo ".idea/*" >> .gitignore
  

• Commit .gitignore file

  $git commit -am "remove .idea"
  

• Next commit will be ok

Which version of bootstrap are you using? The early versions of Bootstrap 3 (3.0, 3.0.1) didn't work with this functionality.

col-md-offset-0 should be working as seen in this bootstrap example found here (http://getbootstrap.com/css/#grid-responsive-resets):

<div class="row">
   <div class="col-sm-5 col-md-6">.col-sm-5 .col-md-6</div>
   <div class="col-sm-5 col-sm-offset-2 col-md-6 col-md-offset-0">.col-sm-5 .col-sm-offset-2 .col-md-6 .col-md-offset-0</div>
</div>

or programatically

TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();

:not selector:

input:not([type]), input[type='text'], input[type='password'] {
    /* style here */
}

Support: in Internet Explorer 9 and higher

Any method you use, there will always be a loop like in removeAll() and set().

So, I solved my problem like this:

for (int i = 0; i < myList.size(); i++) {

        if (myList.get(i).getName().equals(varName)) {

            myList.get(i).setEmail(varEmail);
            break;

        }
    }

Where varName = "Doe" and varEmail = "[email protected]".

I hope this help you.

You simply need to specify your current RE, followed by a letter/number followed by your current RE again:

^[A-Z0-9 _]*[A-Z0-9][A-Z0-9 _]*$

Since you've now stated they're Javascript REs, there's a useful site here where you can test the RE against input data.

If you want lowercase letters as well:

^[A-Za-z0-9 _]*[A-Za-z0-9][A-Za-z0-9 _]*$

All work perfectly :)

 NSString *test = @"test";
 unichar a;
 int index = 5;
    
 @try {
    a = [test characterAtIndex:index];
 }
 @catch (NSException *exception) {
    NSLog(@"%@", exception.reason);
    NSLog(@"Char at index %d cannot be found", index);
    NSLog(@"Max index is: %lu", [test length] - 1);
 }
 @finally {
    NSLog(@"Finally condition");
 }

Log:

[__NSCFConstantString characterAtIndex:]: Range or index out of bounds

Char at index 5 cannot be found

Max index is: 3

Finally condition

in javaFx 8

javafx.scene.image.Image img = new javafx.scene.image.Image("/myPic.jpg", true);

URL url = new URL(img.impl_getUrl());

This the basic usage of allocate/DE-allocate pattern in c++ malloc/free, new/delete, new[]/delete[]

We need to use them correspondingly. But I would like to add this particular understanding for the difference between delete and delete[]

1) delete is used to de-allocate memory allocated for single object

2) delete[] is used to de-allocate memory allocated for array of objects

class ABC{}

ABC *ptr = new ABC[100]

when we say new ABC[100], compiler can get the information about how many objects that needs to be allocated(here it is 100) and will call the constructor for each of the objects created

but correspondingly if we simply use delete ptr for this case, compiler will not know how many objects that ptr is pointing to and will end up calling of destructor and deleting memory for only 1 object(leaving the invocation of destructors and deallocation of remaining 99 objects). Hence there will be a memory leak.

so we need to use delete [] ptr in this case.

Here's some sample code. This worked for me.

<LinearLayout
    android:gravity="center"
    >
    <TextView
        android:layout_gravity="center"
        />
    <Button
        android:layout_gravity="center"
        />
</LinearLayout>

So you're designing the Linear Layout to place all its contents (TextView and Button) in its center, and then the TextView and Button are placed relative to the center of the Linear Layout.

Try SQLDeveloper - there is a migration workbench there

http://www.oracle.com/technetwork/developer-tools/sql-developer/overview/index.html

7-Zip, it's open source, free and supports a wide range of formats.

7z.exe x myarchive.zip

SYSDATETIME() and SYSUTCDATETIME()

are the DateTime2 equivalents of

GetDate() and GetUTCDate()

which return a DateTime.

DateTime2 is now the preferred method for storing the date and time in SQL Server 2008+. See the following StackOverflow Post.

In Python 3, / is float division

In Python 2, / is integer division (assuming int inputs)

In both 2 and 3, // is integer division

(To get float division in Python 2 requires either of the operands be a float, either as 20. or float(20))

For a bandpass filter, ws is a tuple containing the lower and upper corner frequencies. These represent the digital frequency where the filter response is 3 dB less than the passband.

wp is a tuple containing the stop band digital frequencies. They represent the location where the maximum attenuation begins.

gpass is the maximum attenutation in the passband in dB while gstop is the attentuation in the stopbands.

Say, for example, you wanted to design a filter for a sampling rate of 8000 samples/sec having corner frequencies of 300 and 3100 Hz. The Nyquist frequency is the sample rate divided by two, or in this example, 4000 Hz. The equivalent digital frequency is 1.0. The two corner frequencies are then 300/4000 and 3100/4000.

Now lets say you wanted the stopbands to be down 30 dB +/- 100 Hz from the corner frequencies. Thus, your stopbands would start at 200 and 3200 Hz resulting in the digital frequencies of 200/4000 and 3200/4000.

To create your filter, you'd call buttord as

fs = 8000.0
fso2 = fs/2
N,wn = scipy.signal.buttord(ws=[300/fso2,3100/fso2], wp=[200/fs02,3200/fs02],
   gpass=0.0, gstop=30.0)

The length of the resulting filter will be dependent upon the depth of the stop bands and the steepness of the response curve which is determined by the difference between the corner frequency and stopband frequency.

try

with open(f"{os.path.dirname(sys.argv[0])}/data/test.csv", newline='') as f:

I was struggling with the same thing, running a shell script that set variables, then wanting to use the variables in the shared-pom. The goal was to have environment variables replace strings in my project files using the com.google.code.maven-replacer-plugin.

Using ${env.foo} or ${env.FOO} didn't work for me. Maven just wasn't finding the variable. What worked was passing the variable in as a command-line parameter in Maven. Here's the setup:

1. Set the variable in the shell script. If you're launching Maven in a sub-script, make sure the variable is getting set, e.g. using source ./maven_script.sh to call it from the parent script.

2. In shared-pom, create a command-line param that grabs the environment variable:

<plugin>
  ...
  <executions>
    <executions>
    ...
      <execution>
      ...
        <configuration>
          <param>${foo}</param> <!-- Note this is *not* ${env.foo} -->
        </configuration>

3. In com.google.code.maven-replacer-plugin, make the replacement value ${foo}.

4. In my shell script that calls maven, add this to the command: -Dfoo=$foo

If you use Kotlin, you can use extension functions as such, for example:

fun <T> LongSparseArray<T>.valuesIterator(): Iterator<T> {
    val nSize = this.size()
    return object : Iterator<T> {
        var i = 0
        override fun hasNext(): Boolean = i < nSize
        override fun next(): T = valueAt(i++)
    }
}

fun <T> LongSparseArray<T>.keysIterator(): Iterator<Long> {
    val nSize = this.size()
    return object : Iterator<Long> {
        var i = 0
        override fun hasNext(): Boolean = i < nSize
        override fun next(): Long = keyAt(i++)
    }
}

fun <T> LongSparseArray<T>.entriesIterator(): Iterator<Pair<Long, T>> {
    val nSize = this.size()
    return object : Iterator<Pair<Long, T>> {
        var i = 0
        override fun hasNext(): Boolean = i < nSize
        override fun next() = Pair(keyAt(i), valueAt(i++))
    }
}

You can also convert to a list, if you wish. Example:

sparseArray.keysIterator().asSequence().toList()

I think it might even be safe to delete items using remove on the LongSparseArray itself (not on the iterator), as it is in ascending order.

EDIT: Seems there is even an easier way, by using collection-ktx (example here) . It's implemented in a very similar way to what I wrote, actally.

Gradle requires this:

implementation 'androidx.core:core-ktx:#'
implementation 'androidx.collection:collection-ktx:#'

Here's the usage for LongSparseArray :

    val sparse= LongSparseArray<String>()
    for (key in sparse.keyIterator()) {
    }
    for (value in sparse.valueIterator()) {
    }
    sparse.forEach { key, value -> 
    }

And for those that use Java, you can use LongSparseArrayKt.keyIterator , LongSparseArrayKt.valueIterator and LongSparseArrayKt.forEach , for example. Same for the other cases.

You can do so by these ways.

Add watchpoint and while debugging you can see variable in debugger window perspective under variable tab. OR Add System.out.println("variable = " + variable); and see in console.

I apologize for putting an answer up to this question, but I figured it would be the easiest way to view my final code. It includes fixes for nullable types and null values :-)

    public static DataSet ToDataSet<T>(this IList<T> list)
    {
        Type elementType = typeof(T);
        DataSet ds = new DataSet();
        DataTable t = new DataTable();
        ds.Tables.Add(t);

        //add a column to table for each public property on T
        foreach (var propInfo in elementType.GetProperties())
        {
            Type ColType = Nullable.GetUnderlyingType(propInfo.PropertyType) ?? propInfo.PropertyType;

            t.Columns.Add(propInfo.Name, ColType);
        }

        //go through each property on T and add each value to the table
        foreach (T item in list)
        {
            DataRow row = t.NewRow();

            foreach (var propInfo in elementType.GetProperties())
            {
                row[propInfo.Name] = propInfo.GetValue(item, null) ?? DBNull.Value;
            }

            t.Rows.Add(row);
        }

        return ds;
    }

I was looking for a simple package that would do this very same task and did not find anything so I created https://github.com/gregnb/react-to-print

You can use it like so:

 <ReactToPrint
   trigger={() => <a href="#">Print this out!</a>}
   content={() => this.componentRef}
 />
 <ComponentToPrint ref={el => (this.componentRef = el)} />

The only standard mandated implementation dependent way is to use the system() function from stdlib.h.

Also if you know how to make user become the super-user that would be nice also.

Do you want the script to run as super-user or do you want to elevate the privileges of the C executable? The former can be done with sudo but there are a few things you need to know before you can go off using sudo.

Actually, Only this these commands are needed:

VBoxManage clonehd "source.vmdk" "cloned.vdi" --format vdi
VBoxManage modifyhd "cloned.vdi" --resize 51200

Then, you can select cloned.dvi in Virtualbox GUI storage.

After that, start the virtual windows and expand your C disk as the methods of Code Chops.

It is not necessary to convert the *.vdi file to *.vmdk file back.

You must either wrap your collection in a list (new ArrayList(c)) or use c.toArray() since Collections have no notion of "index" or "order".

Most people use docker compose with networks. The documentation states:

The Docker network feature supports creating networks without the need to expose ports within the network, for detailed information see the overview of this feature).

Which means that if you use networks for communication between containers you don't need to worry about exposing ports.

Your variable size is declared as: float size;

You can't use a floating point variable as the size of an array - it needs to be an integer value.

You could cast it to convert to an integer:

float *temp = new float[(int)size];

Your other problem is likely because you're writing outside of the bounds of the array:

   float *temp = new float[size];

    //Getting input from the user
    for (int x = 1; x <= size; x++){
        cout << "Enter temperature " << x << ": ";

        // cin >> temp[x];
        // This should be:
        cin >> temp[x - 1];
    }

Arrays are zero based in C++, so this is going to write beyond the end and never write the first element in your original code.

#include<iostream>

using namespace std;

template<class t> 
class base {
protected:
    t a;
public:
    base(t aa){
        a = aa;
        cout<<"base "<<a<<endl;
    }
};

template <class t> 
class derived: public base<t>{
    public:
        derived(t a): base<t>(a) {
        }
        //Here is the method in derived class 
    void sampleMethod() {
        cout<<"In sample Method"<<endl;
    }
};

int main() {
    derived<int> q(1);
    // calling the methods
    q.sampleMethod();
}

Just as a newer alternative to Teemu Ikonen's answer, which is very simple and easily readable, is to use the ensureDir method of the fs-extra package.

It can not only be used as a blatant replacement for the built in fs module, but also has a lot of other functionalities in addition to the functionalities of the fs package.

The ensureDir method, as the name suggests, ensures that the directory exists. If the directory structure does not exist, it is created. Like mkdir -p. Not just the end folder, instead the entire path is created if not existing already.

the one provided above is the async version of it. It also has a synchronous method to perform this in the form of the ensureDirSync method.

__getitem__ minimal ... example in a custom class

When the magic syntax ... gets passed to [] in a custom class, __getitem__() receives a Ellipsis class object.

The class can then do whatever it wants with this Singleton object.

Example:

class C(object):
    def __getitem__(self, k):
        return k

# Single argument is passed directly.
assert C()[0] == 0

# Multiple indices generate a tuple.
assert C()[0, 1] == (0, 1)

# Slice notation generates a slice object.
assert C()[1:2:3] == slice(1, 2, 3)

# Ellipsis notation generates the Ellipsis class object.
# Ellipsis is a singleton, so we can compare with `is`.
assert C()[...] is Ellipsis

# Everything mixed up.
assert C()[1, 2:3:4, ..., 6] == (1, slice(2,3,4), Ellipsis, 6)

The Python built-in list class chooses to give it the semantic of a range, and any sane usage of it should too of course.

Personally, I'd just stay away from it in my APIs, and create a separate, more explicit method instead.

Tested in Python 3.5.2 and 2.7.12.

I faced the same challenge myself and found these 2 answers using flex properties.

CSS

.container {
  display: flex;
  flex-direction: column;
}

.dynamic-element{
  flex: 1;
}

• https://stackoverflow.com/a/35348188/1084619
• https://stackoverflow.com/a/35348188/1084619

Try this:

<div>
 <p onclick="startAnimation()">Start</p><!--O botão para iniciar (start)-->
 <div id="animation">Hello!</div> <!--O elemento que você quer animar-->
</div>

<style>
@keyframes animationName {
from {margin-left:-30%;}
}
</style>

<script>
function startAnimation() {
    document.getElementById("animation").style.animation = "animationName 2s linear 1";
}
</script>

The short answer is "yes". A sample ldapsearch command to query an Active Directory server is:

ldapsearch \
    -x -h ldapserver.mydomain.com \
    -D "[email protected]" \
    -W \
    -b "cn=users,dc=mydomain,dc=com" \
    -s sub "(cn=*)" cn mail sn

This would connect to an AD server at hostname ldapserver.mydomain.com as user [email protected], prompt for the password on the command line and show name and email details for users in the cn=users,dc=mydomain,dc=com subtree.

See Managing LDAP from the Command Line on Linux for more samples. See LDAP Query Basics for Microsoft Exchange documentation for samples using LDAP queries with Active Directory.

in swift 4 to convert to url use URL

let fileUrl = URL.init(fileURLWithPath: filePath)

or

let fileUrl = URL(fileURLWithPath: filePath)

$("#togglebutton").click(function () {
  $(".fa-arrow-circle-left").toggleClass("fa-arrow-circle-right");
}

I have a button with the id "togglebutton" and an icon from FontAwesome . This can be a way to toggle it . from left arrow to right arrow icon

SimpleDateFormat dateFormat = new SimpleDateFormat("dd/mm/yyyy hh:mm:ss a");

use hh in place of HH

You can disable FK and CHECK constraints only in SQL 2005+. See ALTER TABLE

ALTER TABLE foo NOCHECK CONSTRAINT ALL

or

ALTER TABLE foo NOCHECK CONSTRAINT CK_foo_column

Primary keys and unique constraints can not be disabled, but this should be OK if I've understood you correctly.

Declare @DatePeriod datetime
Set @DatePeriod = '2011-05-30'

Select  ProductName,
        IsNull([1],0) as 'Week 1',
        IsNull([2],0) as 'Week 2',
        IsNull([3],0) as 'Week 3',
        IsNull([4],0) as 'Week 4',
        IsNull([5], 0) as 'Week 5'
From 
(
Select  ProductName,
        DATEDIFF(week, DATEADD(MONTH, DATEDIFF(MONTH, 0, '2011-05-30'), 0), '2011-05-30') +1 as [Weeks],
        Sale as 'Sale'
From dbo.WeekReport

-- Only get rows where the date is the same as the DatePeriod
-- i.e DatePeriod is 30th May 2011 then only the weeks of May will be calculated
Where DatePart(Month, '2011-05-30')= DatePart(Month, @DatePeriod)
)p 
Pivot (Sum(Sale) for Weeks in ([1],[2],[3],[4],[5])) as pv

OUTPUT LOOK LIKE THIS

a   0   0   0   0   20
b   0   0   0   0   4
c   0   0   0   0   3

In Ubuntu 18.04, below are the steps that I followed.

python3 -m pip install --upgrade pip

For some reason you will be getting an error, and that be fixed by making bash forget the wrongly referenced locations using the following command.

hash -r pip

HTTP request POST in java does not dump the answer?

public class HttpClientExample 
{
 private final String USER_AGENT = "Mozilla/5.0";
 public static void main(String[] args) throws Exception 
 {

HttpClientExample http = new HttpClientExample();

System.out.println("\nTesting 1 - Send Http POST request");
http.sendPost();

}

 // HTTP POST request
 private void sendPost() throws Exception {
 String url = "http://www.wmtechnology.org/Consultar-RUC/index.jsp";

HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(url);

// add header
post.setHeader("User-Agent", USER_AGENT);

List<NameValuePair> urlParameters = new ArrayList<>();
urlParameters.add(new BasicNameValuePair("accion", "busqueda"));
        urlParameters.add(new BasicNameValuePair("modo", "1"));
urlParameters.add(new BasicNameValuePair("nruc", "10469415177"));

post.setEntity(new UrlEncodedFormEntity(urlParameters));

HttpResponse response = client.execute(post);
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Post parameters : " + post.getEntity());
System.out.println("Response Code : " +response.getStatusLine().getStatusCode());

 BufferedReader rd = new BufferedReader(new 
 InputStreamReader(response.getEntity().getContent()));

  StringBuilder result = new StringBuilder();
  String line = "";
  while ((line = rd.readLine()) != null) 
        {
      result.append(line);
                System.out.println(line);
    }

   }
 }

This is the web: http://www.wmtechnology.org/Consultar-RUC/index.jsp,from you can consult Ruc without captcha. Your opinions are welcome!

For what is worth, I took advantage that I was already using bootstrap (4.3), because I needed to add margin, box-shadow and border-radius to my row, something I can't do with tables.

<div id="loop" class="table-responsive px-4">
<section>
    <div id="thead" class="row m-0">
        <div class="col"></div>
        <div class="col"></div>
        <div class="col"></div>
    </div>
    <div id="tbody" class="row m-0">
        <div class="col"></div>
        <div class="col"></div>
        <div class="col"></div>
    </div>
</section>
</div>

On css I added a few lines to mantain the table behavior of bootstrap

@media (max-width: 800px){
    #loop{
        section{
            min-width: 700px;
        }
    }
}

I've been doing it this way:

class Event(list):
    """Event subscription.

    A list of callable objects. Calling an instance of this will cause a
    call to each item in the list in ascending order by index.

    Example Usage:
    >>> def f(x):
    ...     print 'f(%s)' % x
    >>> def g(x):
    ...     print 'g(%s)' % x
    >>> e = Event()
    >>> e()
    >>> e.append(f)
    >>> e(123)
    f(123)
    >>> e.remove(f)
    >>> e()
    >>> e += (f, g)
    >>> e(10)
    f(10)
    g(10)
    >>> del e[0]
    >>> e(2)
    g(2)

    """
    def __call__(self, *args, **kwargs):
        for f in self:
            f(*args, **kwargs)

    def __repr__(self):
        return "Event(%s)" % list.__repr__(self)

However, like with everything else I've seen, there is no auto generated pydoc for this, and no signatures, which really sucks.

I found the examples a bit tricky to follow for the situation where you want to ensure a row exists in the destination table (especially when you have two columns as the primary key), but the primary key might not exist there at all so there's nothing to select.

This is what worked for me:

MERGE INTO table1 D
    USING (
        -- These are the row(s) you want to insert.
        SELECT 
        'val1' AS FIELD_A,
        'val2' AS FIELD_B
        FROM DUAL

    ) S ON (
        -- This is the criteria to find the above row(s) in the
        -- destination table.  S refers to the rows in the SELECT
        -- statement above, D refers to the destination table.
        D.FIELD_A = S.FIELD_A
        AND D.FIELD_B = S.FIELD_B
    )

    -- This is the INSERT statement to run for each row that
    -- doesn't exist in the destination table.
    WHEN NOT MATCHED THEN INSERT (
        FIELD_A,
        FIELD_B,
        FIELD_C
    ) VALUES (
        S.FIELD_A,
        S.FIELD_B,
        'val3'
    )

The key points are:

• The SELECT statement inside the USING block must always return rows. If there are no rows returned from this query, no rows will be inserted or updated. Here I select from DUAL so there will always be exactly one row.
• The ON condition is what sets the criteria for matching rows. If ON does not have a match then the INSERT statement is run.
• You can also add a WHEN MATCHED THEN UPDATE clause if you want more control over the updates too.