SyntaxFix.com - Programming Questions & Answers Hub For Beginners

Most people responding don't even seem to know what an array pointer is...

The problem is that you do pointer arithmetics with an array pointer: ptr + 1 will mean "jump 5 bytes ahead since ptr points at a 5 byte array".

Do like this instead:

#include <stdio.h>

int main()
{
  char (*ptr)[5];
  char arr[5] = {'a','b','c','d','e'};
  int i;

  ptr = &arr;
  for(i=0; i<5; i++)
  {
    printf("\nvalue: %c", (*ptr)[i]);
  }
}

Take the contents of what the array pointer points at and you get an array. So they work just like any pointer in C.

For some people this makes more sense if they see it in a couple different languages so I wrote an example in Java, and PHP on my page where I explain some of these modifiers. You might be thinking about this incorrectly.

You should look at my examples if it doesn't make sense below. Go here http://www.siteconsortium.com/h/D0000D.php

The bottom line though is that it is pretty much exactly what it says it is. It's a static member variable that is private. For example if you wanted to create a Singleton object why would you want to make the SingletonExample.instance variable public. If you did a person who was using the class could easily overwrite the value.

That's all it is.

    public class SingletonExample {
      private static SingletonExample instance = null;
      private static int value = 0;
      private SingletonExample() {
        ++this.value;
      }
      public static SingletonExample getInstance() {
        if(instance!=null)
        return instance;
        synchronized(SingletonExample.class) {
        instance = new SingletonExample();
        return instance;
        }
      }
      public void printValue() {
        System.out.print( this.value );
      }

      public static void main(String [] args) {
        SingletonExample instance = getInstance();
        instance.printValue();
        instance = getInstance();
        instance.printValue();
         }
    }

1 - You can set a timeout in your application :

var client = new YourServiceReference.YourServiceClass();
client.Timeout = 60; // or -1 for infinite

It is in milliseconds.

2 - Also you can increase timeout value in httpruntime tag in web/app.config :

<configuration>
     <system.web>
          <httpRuntime executionTimeout="<<**seconds**>>" />
          ...
     </system.web>
</configuration>

For ASP.NET applications, the Timeout property value should always be less than the executionTimeout attribute of the httpRuntime element in Machine.config. The default value of executionTimeout is 90 seconds. This property determines the time ASP.NET continues to process the request before it returns a timed out error. The value of executionTimeout should be the proxy Timeout, plus processing time for the page, plus buffer time for queues. -- Source

This might be what you're looking for: Xcode Organizer

In Tomcat 9.0, I only have to change the following in the server.xml

<Context docBase="web" path="/web" reloadable="true" source="org.eclipse.jst.jee.server:web"/>

to

<Context docBase="web" path="" reloadable="true" source="org.eclipse.jst.jee.server:web"/>

I have made a simple demo that prompts for X number of seconds and redirects to set url. If you don't want to wait until the end of the count, just click on the counter to redirect with no time. Simple counter that will count down while pulsing time in the midle of the page. You can run it onclick or while some page is loaded.

LIVE DEMO ONLOAD

LIVE DEMO ONCLICK

I also made github repo for this: https://github.com/GlupiJas/redirect-counter-plugin

JS CODE EXAMPLE:

// FUNCTION CODE
function gjCountAndRedirect(secounds, url)
{

        $('#gj-counter-num').text(secounds);

        $('#gj-counter-box').show();

    var interval = setInterval(function()
    {

        secounds = secounds - 1;

        $('#gj-counter-num').text(secounds);

        if(secounds == 0)
        {

            clearInterval(interval);
            window.location = url;
            $('#gj-counter-box').hide();

        }

    }, 1000);

    $('#gj-counter-box').click(function() //comment it out -if you dont want to allo count skipping
    {
        clearInterval(interval);
        window.location = url;

    });
}

// USE EXAMPLE
$(document).ready(function() {
    //var
    var gjCountAndRedirectStatus = false; //prevent from seting multiple Interval

    //call
    $('h1').click(function(){
        if(gjCountAndRedirectStatus == false)
        {
            gjCountAndRedirect(10, document.URL);
            gjCountAndRedirectStatus = true;
        }
    });

});

I ran into this error message today and wanted to post the resolution to my particular my case. It turns out that my problem was that one of my css files was missing a closing brace and this was causing the file to not be compiled. It may be harder to notice this if you have an automated process that sets everything up (including the asset precompile) for your production environment.

Can do the following

PRINT dbo.[FunctionName] ( [Parameter/Argument] )

E.g.:

PRINT dbo.StringSplit('77,54')

import datetime

d1 = datetime.date(2008,8,15)
d2 = datetime.date(2008,9,15)
diff = d2 - d1
for i in range(diff.days + 1):
    print (d1 + datetime.timedelta(i)).isoformat()

You can using SXSSFWorkbook implementation of Workbook, if you use style in your excel ,You can caching style by Flyweight Pattern to improve your performance.

There are numerous methods of accomplishing this, which I'll detail with a few examples below.

Pure CSS (using only one colored image)

img.grayscale {
  filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale"); /* Firefox 3.5+ */
  filter: gray; /* IE6-9 */
  -webkit-filter: grayscale(100%); /* Chrome 19+ & Safari 6+ */
}

img.grayscale:hover {
  filter: none;
  -webkit-filter: grayscale(0%);
}

img.grayscale {_x000D_
  filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale");_x000D_
  /* Firefox 3.5+, IE10 */_x000D_
  filter: gray;_x000D_
  /* IE6-9 */_x000D_
  -webkit-filter: grayscale(100%);_x000D_
  /* Chrome 19+ & Safari 6+ */_x000D_
  -webkit-transition: all .6s ease;_x000D_
  /* Fade to color for Chrome and Safari */_x000D_
  -webkit-backface-visibility: hidden;_x000D_
  /* Fix for transition flickering */_x000D_
}_x000D_
_x000D_
img.grayscale:hover {_x000D_
  filter: none;_x000D_
  -webkit-filter: grayscale(0%);_x000D_
}_x000D_
_x000D_
svg {_x000D_
  background: url(http://4.bp.blogspot.com/-IzPWLqY4gJ0/T01CPzNb1KI/AAAAAAAACgA/_8uyj68QhFE/s400/a2cf7051-5952-4b39-aca3-4481976cb242.jpg);_x000D_
}_x000D_
_x000D_
svg image {_x000D_
  transition: all .6s ease;_x000D_
}_x000D_
_x000D_
svg image:hover {_x000D_
  opacity: 0;_x000D_
}

<p>Firefox, Chrome, Safari, IE6-9</p>_x000D_
<img class="grayscale" src="http://4.bp.blogspot.com/-IzPWLqY4gJ0/T01CPzNb1KI/AAAAAAAACgA/_8uyj68QhFE/s1600/a2cf7051-5952-4b39-aca3-4481976cb242.jpg" width="400">_x000D_
<p>IE10 with inline SVG</p>_x000D_
<svg xmlns="http://www.w3.org/2000/svg" id="svgroot" viewBox="0 0 400 377" width="400" height="377">_x000D_
  <defs>_x000D_
     <filter id="filtersPicture">_x000D_
       <feComposite result="inputTo_38" in="SourceGraphic" in2="SourceGraphic" operator="arithmetic" k1="0" k2="1" k3="0" k4="0" />_x000D_
       <feColorMatrix id="filter_38" type="saturate" values="0" data-filterid="38" />_x000D_
    </filter>_x000D_
  </defs>_x000D_
  <image filter="url(&quot;#filtersPicture&quot;)" x="0" y="0" width="400" height="377" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://4.bp.blogspot.com/-IzPWLqY4gJ0/T01CPzNb1KI/AAAAAAAACgA/_8uyj68QhFE/s1600/a2cf7051-5952-4b39-aca3-4481976cb242.jpg" />_x000D_
   </svg>

You can find an article related to this technique here.

Pure CSS (using a grayscale and colored images)

This approach requires two copies of an image: one in grayscale and the other in full color. Using the CSS :hover psuedoselector, you can update the background of your element to toggle between the two:

#yourimage { 
    background: url(../grayscale-image.png);
}
#yourImage:hover { 
    background: url(../color-image.png};
}

#google {_x000D_
  background: url('http://www.google.com/logos/keystroke10-hp.png');_x000D_
  height: 95px;_x000D_
  width: 275px;_x000D_
  display: block;_x000D_
  /* Optional for a gradual animation effect */_x000D_
  transition: 0.5s;_x000D_
}_x000D_
_x000D_
#google:hover {_x000D_
  background: url('https://graphics217b.files.wordpress.com/2011/02/logo1w.png');_x000D_
}

<a id='google' href='http://www.google.com'></a>

This could also be accomplished by using a Javascript-based hover effect such as jQuery's hover() function in the same manner.

Consider a Third-Party Library

The desaturate library is a common library that allows you to easily switch between a grayscale version and full-colored version of a given element or image.

using prototype we can set directly to array class

Array.prototype.chunk = function(n) {_x000D_
  if (!this.length) {_x000D_
    return [];_x000D_
  }_x000D_
  return [this.slice(0, n)].concat(this.slice(n).chunk(n));_x000D_
};_x000D_
console.log([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15].chunk(5));

Imagine you have

<div class="wrap">
    <img src="#">
</div>

And css:

.wrap {
    display: flex;
}
.wrap img {
    object-fit: contain;
}

The question in the link you gave talks about naming of JavaScript variables, not about file naming, so forget about that for the context in which you ask your question.

As to file naming, it is purely a matter of preference and taste. I prefer naming files with hyphens because then I don't have to reach for the shift key, as I do when dealing with camelCase file names; and because I don't have to worry about differences between Windows and Linux file names (Windows file names are case-insensitive, at least through XP).

So the answer, like so many, is "it depends" or "it's up to you."

The one rule you should follow is to be consistent in the convention you choose.

With Mac OS X and the more recent versions of Acrobat Pro, the PDF printer option does not work. What does work is doing basically the same thing in Preview App. Open the multi page file in Preview, select File>Print. In the Print dialog set your sheet size as if you are using a printer. You may want to select "Auto Rotate", "Scale to Fit" and "Print Entire Image". Then in the lower left corner is the drop button "PDF" and in that menu select "Save as PDF". Give it a new file name, click Save and then you can open the resulting file in whatever PDF app you want and the sheet sizes are the same.

The following works on SQL2008 and above. Provides a list of both stored procedures and functions.

select distinct [Table Name] = o.Name, [Found In] = sp.Name, sp.type_desc
  from sys.objects o inner join sys.sql_expression_dependencies  sd on o.object_id = sd.referenced_id
                inner join sys.objects sp on sd.referencing_id = sp.object_id
                    and sp.type in ('P', 'FN')
  where o.name = 'YourTableName'
  order by sp.Name

Points to note, on the Watch out for common mistakes:

If your start index is 0 (or some index from begin), then, the correct code is:

var tableHeaderRowCount = 1;
var table = document.getElementById('WRITE_YOUR_HTML_TABLE_NAME_HERE');
var rowCount = table.rows.length;
for (var i = tableHeaderRowCount; i < rowCount; i++) {
    table.deleteRow(tableHeaderRowCount);
}

NOTES

1. the argument for deleteRow is fixed
this is required since as we delete a row, the number of rows decrease.
i.e; by the time i reaches (rows.length - 1), or even before that row is already deleted, so you will have some error/exception (or a silent one).

2. the rowCount is taken before the for loop starts since as we delete the "table.rows.length" will keep on changing, so again you have some issue, that only odd or even rows only gets deleted.

Hope that helps.

For a very simple case like this, a comprehension, as in Ismail Badawi's answer is definitely the way to go.

But when things get more complicated, and you need to start writing multi-clause or nested comprehensions with complex expressions in them, it's worth looking into other alternatives. There are a few different (quasi-)standard ways to specify XPath-style searches on nested dict-and-list structures, such as JSONPath, DPath, and KVC. And there are nice libraries on PyPI for them.

Here's an example with the library named dpath, showing how it can simplify something just a bit more complicated:

>>> dd = {
...     'fruits': [{'value': 'apple', 'blah': 2}, {'value': 'banana', 'blah': 3}],
...     'vehicles': [{'value': 'cars', 'blah':4}]}

>>> {key: [{'value': d['value']} for d in value] for key, value in dd.items()}
{'fruits': [{'value': 'apple'}, {'value': 'banana'}],
 'vehicles': [{'value': 'cars'}]}

>>> dpath.util.search(dd, '*/*/value')
{'fruits': [{'value': 'apple'}, {'value': 'banana'}],
 'vehicles': [{'value': 'cars'}]}

Or, using jsonpath-ng:

>>> [d['value'] for key, value in dd.items() for d in value]
['apple', 'banana', 'cars']
>>> [m.value for m in jsonpath_ng.parse('*.[*].value').find(dd)]
['apple', 'banana', 'cars']

This one may not look quite as simple at first glance, because find returns match objects, which include all kinds of things besides just the matched value, such as a path directly to each item. But for more complex expressions, being able to specify a path like '*.[*].value' instead of a comprehension clause for each * can make a big difference. Plus, JSONPath is a language-agnostic specification, and there are even online testers that can be very handy for debugging.

If there are duplicate keys in the first list that map to different values in the second list, like a 1-to-many relationship, but you need the values to be combined or added or something instead of updating, you can do this:

i = iter(["a", "a", "b", "c", "b"])
j = iter([1,2,3,4,5])
k = list(zip(i, j))
for (x,y) in k:
    if x in d:
        d[x] = d[x] + y #or whatever your function needs to be to combine them
    else:
        d[x] = y

In that example, d == {'a': 3, 'c': 4, 'b': 8}

It sounds like the only varaible stored in the .RData file was one named isfar.

Are you really sure that you saved the table? The command should have been:

save(the_table, file = "isfar.RData")

There are many ways to examine a variable.

Type it's name at the command prompt to see it printed. Then look at str, ls.str, summary, View and unclass.

Another way:

>>> [i for i in range(len(a)) if a[i] > 2]
[2, 5]

In general, remember that while find is a ready-cooked function, list comprehensions are a general, and thus very powerful solution. Nothing prevents you from writing a find function in Python and use it later as you wish. I.e.:

>>> def find_indices(lst, condition):
...   return [i for i, elem in enumerate(lst) if condition(elem)]
... 
>>> find_indices(a, lambda e: e > 2)
[2, 5]

Note that I'm using lists here to mimic Matlab. It would be more Pythonic to use generators and iterators.

Just a helpful hint, there is a company called Yodlee.com who provides this data. They do charge for the API. Companies like Mint.com use this API to gather bank and financial account data.

Also, checkout https://plaid.com/, they are a similar company Yodlee.com and provide both authentication API for several banks and REST-based transaction fetching endpoints.

Based on the previous answer that give me some errors, finaly I use this code with GetOpenedWindows function:

public class InfoWindow
{
            public IntPtr Handle = IntPtr.Zero;
            public FileInfo File = new FileInfo( Application.ExecutablePath );
            public string Title = Application.ProductName;
            public override string ToString() {
                return  File.Name + "\t>\t" + Title;
            }
 }//CLASS

/// <summary>Contains functionality to get info on the open windows.</summary>
public static class RuningWindows
{   
            internal static event EventHandler WindowActivatedChanged;    
            internal static Timer TimerWatcher = new Timer();    
            internal static InfoWindow WindowActive = new InfoWindow();       
            internal static void DoStartWatcher() {
                TimerWatcher.Interval = 500;
                TimerWatcher.Tick += TimerWatcher_Tick;
                TimerWatcher.Start();    
            }                    

            /// <summary>Returns a dictionary that contains the handle and title of all the open windows.</summary>
            /// <returns>A dictionary that contains the handle and title of all the open windows.</returns>
            public static IDictionary<IntPtr , InfoWindow> GetOpenedWindows()
            {
                IntPtr shellWindow = GetShellWindow();
                Dictionary<IntPtr , InfoWindow> windows = new Dictionary<IntPtr , InfoWindow>();

                EnumWindows( new EnumWindowsProc( delegate( IntPtr hWnd , int lParam ) {
                    if ( hWnd == shellWindow ) return true;
                    if ( !IsWindowVisible( hWnd ) ) return true;    
                    int length = GetWindowTextLength( hWnd );
                    if ( length == 0 ) return true;    
                    StringBuilder builder = new StringBuilder( length );
                    GetWindowText( hWnd , builder , length + 1 );    
                    var info = new InfoWindow();
                    info.Handle = hWnd;
                    info.File = new FileInfo( GetProcessPath( hWnd ) );
                    info.Title = builder.ToString();    
                    windows[hWnd] = info;
                    return true;    
                } ) , 0 );    
                return windows;
            }

            private delegate bool EnumWindowsProc( IntPtr hWnd , int lParam );  

            public static string GetProcessPath( IntPtr hwnd )
            {
                uint pid = 0;
                GetWindowThreadProcessId( hwnd , out pid );
                if ( hwnd != IntPtr.Zero ) {
                    if ( pid != 0 ) {
                        var process = Process.GetProcessById( (int) pid );
                        if ( process != null ) {
                            return process.MainModule.FileName.ToString();
                        }
                    }
                }
                return "";
            }    

            [DllImport( "USER32.DLL" )]
            private static extern bool EnumWindows( EnumWindowsProc enumFunc , int lParam );

            [DllImport( "USER32.DLL" )]
            private static extern int GetWindowText( IntPtr hWnd , StringBuilder lpString , int nMaxCount );

            [DllImport( "USER32.DLL" )]
            private static extern int GetWindowTextLength( IntPtr hWnd );

            [DllImport( "USER32.DLL" )]
            private static extern bool IsWindowVisible( IntPtr hWnd );

            [DllImport( "USER32.DLL" )]
            private static extern IntPtr GetShellWindow();

            [DllImport( "user32.dll" )]
            private static extern IntPtr GetForegroundWindow();

            //WARN: Only for "Any CPU":
            [DllImport( "user32.dll" , CharSet = CharSet.Auto , SetLastError = true )]
            private static extern int GetWindowThreadProcessId( IntPtr handle , out uint processId );    


            static void TimerWatcher_Tick( object sender , EventArgs e )
            {
                var windowActive = new InfoWindow();
                windowActive.Handle = GetForegroundWindow();
                string path = GetProcessPath( windowActive.Handle );
                if ( string.IsNullOrEmpty( path ) ) return;
                windowActive.File = new FileInfo( path );
                int length = GetWindowTextLength( windowActive.Handle );
                if ( length == 0 ) return;
                StringBuilder builder = new StringBuilder( length );
                GetWindowText( windowActive.Handle , builder , length + 1 );
                windowActive.Title = builder.ToString();
                if ( windowActive.ToString() != WindowActive.ToString() ) {
                    //fire:
                    WindowActive = windowActive;
                    if ( WindowActivatedChanged != null ) WindowActivatedChanged( sender , e );
                    Console.WriteLine( "Window: " + WindowActive.ToString() );
                }
            }

}//CLASS

Warning: You can only compil/debug under "Any CPU" to access to 32bits Apps...

I used to use numpy.arange but had some complications controlling the number of elements it returns, due to floating point errors. So now I use linspace, e.g.:

>>> import numpy
>>> numpy.linspace(0, 10, num=4)
array([  0.        ,   3.33333333,   6.66666667,  10.        ])

User.findByIdAndUpdate(req.param('userId'), req.body, (err, user) => {
    if(err) return res.json(err);

    res.json({ success: true });
});

I'm using rather specified charset (ISO-8859-2) because not every mail system (for example: http://10minutemail.com) can read UTF-8 mails. If you need this:

function utf8_to_latin2($str)
{
    return iconv ( 'utf-8', 'ISO-8859-2' , $str );
}
function my_mail($to,$s,$text,$form, $reply)
    {
        mail($to,utf8_to_latin2($s),utf8_to_latin2($text),
        "From: $form\r\n".
        "Reply-To: $reply\r\n".
        "X-Mailer: PHP/" . phpversion());
    }

I have made another mailer function, because apple device could not read well the previous version.

function utf8mail($to,$s,$body,$from_name="x",$from_a = "[email protected]", $reply="[email protected]")
{
    $s= "=?utf-8?b?".base64_encode($s)."?=";
    $headers = "MIME-Version: 1.0\r\n";
    $headers.= "From: =?utf-8?b?".base64_encode($from_name)."?= <".$from_a.">\r\n";
    $headers.= "Content-Type: text/plain;charset=utf-8\r\n";
    $headers.= "Reply-To: $reply\r\n";  
    $headers.= "X-Mailer: PHP/" . phpversion();
    mail($to, $s, $body, $headers);
}

Since Java 1.6, there is ArrayDeque, which implements Queue and seems to be faster and more memory efficient than a LinkedList and doesn't have the thread synchronization overhead of the ArrayBlockingQueue: from the API docs: "This class is likely to be faster than Stack when used as a stack, and faster than LinkedList when used as a queue."

final Queue<Object> q = new ArrayDeque<Object>();
q.add(new Object()); //insert element
q.poll(); //remove element

Start by reading the fork man page as well as the getppid / getpid man pages.

From fork's

On success, the PID of the child process is returned in the parent's thread of execution, and a 0 is returned in the child's thread of execution. On failure, a -1 will be returned in the parent's context, no child process will be created, and errno will be set appropriately.

So this should be something down the lines of

if ((pid=fork())==0){
    printf("yada yada %u and yada yada %u",getpid(),getppid());
}
else{ /* avoids error checking*/
    printf("Dont yada yada me, im your parent with pid %u ", getpid());
}

As to your question:

This is the child process. My pid is 22163 and my parent's id is 0.

This is the child process. My pid is 22162 and my parent's id is 22163.

fork() executes before the printf. So when its done, you have two processes with the same instructions to execute. Therefore, printf will execute twice. The call to fork() will return 0 to the child process, and the pid of the child process to the parent process.

You get two running processes, each one will execute this instruction statement:

printf ("... My pid is %d and my parent's id is %d",getpid(),0); 

and

printf ("... My pid is %d and my parent's id is %d",getpid(),22163);  

~

To wrap it up, the above line is the child, specifying its pid. The second line is the parent process, specifying its id (22162) and its child's (22163).

string ToBeReplaceCharacters = @"~()@#$%&+,'"<>|;\/*?";
string fileName = "filename;with<bad:separators?";

foreach (var RepChar in ToBeReplaceCharacters)
{
    fileName = fileName.Replace(RepChar.ToString(), "");
}

In case you have to download a file with a size larger than the allowed memory limit (memory_limit ini setting), which would cause the PHP Fatal error: Allowed memory size of 5242880 bytes exhausted error, you can do this:

// File to download.
$file = '/path/to/file';

// Maximum size of chunks (in bytes).
$maxRead = 1 * 1024 * 1024; // 1MB

// Give a nice name to your download.
$fileName = 'download_file.txt';

// Open a file in read mode.
$fh = fopen($file, 'r');

// These headers will force download on browser,
// and set the custom file name for the download, respectively.
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="' . $fileName . '"');

// Run this until we have read the whole file.
// feof (eof means "end of file") returns `true` when the handler
// has reached the end of file.
while (!feof($fh)) {
    // Read and output the next chunk.
    echo fread($fh, $maxRead);

    // Flush the output buffer to free memory.
    ob_flush();
}

// Exit to make sure not to output anything else.
exit;

Probably the most definitive is Figure B.1(d) of the ggplot2 book, the appendices of which are available at http://ggplot2.org/book/appendices.pdf.

However, it is not quite that simple. hjust and vjust as described there are how it works in geom_text and theme_text (sometimes). One way to think of it is to think of a box around the text, and where the reference point is in relation to that box, in units relative to the size of the box (and thus different for texts of different size). An hjust of 0.5 and a vjust of 0.5 center the box on the reference point. Reducing hjust moves the box right by an amount of the box width times 0.5-hjust. Thus when hjust=0, the left edge of the box is at the reference point. Increasing hjust moves the box left by an amount of the box width times hjust-0.5. When hjust=1, the box is moved half a box width left from centered, which puts the right edge on the reference point. If hjust=2, the right edge of the box is a box width left of the reference point (center is 2-0.5=1.5 box widths left of the reference point. For vertical, less is up and more is down. This is effectively what that Figure B.1(d) says, but it extrapolates beyond [0,1].

But, sometimes this doesn't work. For example

DF <- data.frame(x=c("a","b","cdefghijk","l"),y=1:4)
p <- ggplot(DF, aes(x,y)) + geom_point()

p + opts(axis.text.x=theme_text(vjust=0))
p + opts(axis.text.x=theme_text(vjust=1))
p + opts(axis.text.x=theme_text(vjust=2))

The three latter plots are identical. I don't know why that is. Also, if text is rotated, then it is more complicated. Consider

p + opts(axis.text.x=theme_text(hjust=0, angle=90))
p + opts(axis.text.x=theme_text(hjust=0.5 angle=90))
p + opts(axis.text.x=theme_text(hjust=1, angle=90))
p + opts(axis.text.x=theme_text(hjust=2, angle=90))

The first has the labels left justified (against the bottom), the second has them centered in some box so their centers line up, and the third has them right justified (so their right sides line up next to the axis). The last one, well, I can't explain in a coherent way. It has something to do with the size of the text, the size of the widest text, and I'm not sure what else.

And in PHPUnit Selenium test it's like this:

$text = $this->byCssSelector('.some-class-nmae')->attribute('innerHTML');

This is for all those like me, which need to update the Viewpager from a service (or other background thread) and none of the proposals have worked: After a bit of logchecking i realized, that the notifyDataSetChanged() method never returns. getItemPosition(Object object) is called an all ends there without further processing. Then i found in the docs of the parent PagerAdapter class (is not in the docs of the subclasses), "Data set changes must occur on the main thread and must end with a call to notifyDataSetChanged() ". So, the working solution in this case was (using FragmentStatePagerAdapter and getItemPosition(Object object) set to return POSITION_NONE) :

and then the call to notifyDataSetChanged() :

runOnUiThread(new Runnable() {
         @Override
         public void run() {
             pager.getAdapter().notifyDataSetChanged();
         }
     });

Have you tried using @JsonProperty?

@Entity
public class City {
   @id
   Long id;
   String name;

   @JsonProperty("label")
   public String getName() { return name; }

   public void setName(String name){ this.name = name; }

   @JsonProperty("value")
   public Long getId() { return id; }

   public void setId(Long id){ this.id = id; }
}

Python’s raw strings are just a way to tell the Python interpreter that it should interpret backslashes as literal slashes. If you read strings entered by the user, they are already past the point where they could have been raw. Also, user input is most likely read in literally, i.e. “raw”.

This means the interpreting happens somewhere else. But if you know that it happens, why not escape the backslashes for whatever is interpreting it?

s = s.replace("\\", "\\\\")

(Note that you can't do r"\" as “a raw string cannot end in a single backslash”, but I could have used r"\\" as well for the second argument.)

If that doesn’t work, your user input is for some arcane reason interpreting the backslashes, so you’ll need a way to tell it to stop that.

HttpWebRequest myHttprequest = null;
HttpWebResponse myHttpresponse = null;
myHttpRequest = (HttpWebRequest)WebRequest.Create(URL);
myHttpRequest.Method = "POST";
myHttpRequest.ContentType = "application/x-www-form-urlencoded";
myHttpRequest.ContentLength = urinfo.Length;
StreamWriter writer = new StreamWriter(myHttprequest.GetRequestStream());
writer.Write(urinfo);
writer.Close();
myHttpresponse = (HttpWebResponse)myHttpRequest.GetResponse();
if (myHttpresponse.StatusCode == HttpStatusCode.OK)
 {
   //Perform necessary action based on response
 }
myHttpresponse.Close(); 

I'm using the Google Pagespeed Insights image optimization guidelines, and for ImageMagick they recommend the following:

-sampling-factor 4:2:0
-strip
-quality 85 [it can vary, I use range 60-80, lower number here means smaller file]
-interlace
-colorspace RGB

Command in ImageMagick:

convert image.jpg -sampling-factor 4:2:0 -strip -quality 85 -interlace JPEG -colorspace RGB image_converted.jpg

With these options I get up to 40% savings in JPEG size without much visible loss.

The .cpp file is configured to use precompiled header, therefore it must be included first (before iostream). For Visual Studio, it's name is usually "stdafx.h".

If there are no stdafx* files in your project, you need to go to this file's options and set it as “Not using precompiled headers”.

The main difference between the two is where it is stored and how it is accessed.

$.fn.attr stores the information directly on the element in attributes which are publicly visible upon inspection, and also which are available from the element's native API.

$.fn.data stores the information in a ridiculously obscure place. It is located in a closed over local variable called data_user which is an instance of a locally defined function Data. This variable is not accessible from outside of jQuery directly.

Data set with attr()

• accessible from $(element).attr('data-name')
• accessible from element.getAttribute('data-name'),
• if the value was in the form of data-name also accessible from $(element).data(name) and element.dataset['name'] and element.dataset.name
• visible on the element upon inspection
• cannot be objects

Data set with .data()

• accessible only from .data(name)
• not accessible from .attr() or anywhere else
• not publicly visible on the element upon inspection
• can be objects

so it's easy)))

Watch this...

    var stuff = {};
    $('input[type=checkbox]').each(function(i, e) {
        stuff[i] = e.checked;
    });

And you will have:

Object {0: true, 1: false, 2: false, 3: false}

Or:

$('input[type=checkbox]').each(function(i, e) {
    stuff['row'+i] = e.checked;
});

You will have:

Object {row0: true, row1: false, row2: false, row3: false}

Or:

$('input[type=checkbox]').each(function(i, e) {
    stuff[e.className+i] = e.checked;
});

You will have:

Object {checkbox0: true, checkbox1: false, checkbox2: false, checkbox3: false}

You should be able to use something similar to:

$('#selectElementId').change(
    function(){
         $(this).closest('form').trigger('submit');
         /* or:
         $('#formElementId').trigger('submit');
            or:
         $('#formElementId').submit();
         */
    });

I had this problem, but only when I tried to rsync from a Linux (RH) server to a Solaris server. My fix was to make sure rsync had the same path on both boxes, and that the ownership of rsync was the same.

On the linux box, rsync path was /usr/bin, on Solaris box it was /usr/local/bin. So, on the Solaris box I did ln -s /usr/local/bin/rsync /usr/bin/rsync.

I still had the same problem, and noticed ownership differences. On linux it was root:root, on solaris it was bin:bin. Changing solaris to root:root fixed it.

If you are running this inside a transaction and a SQL statement before this drops/alters the table you can also get this message.

Let's start by describing DOM elements' event handling.

DOM node event handling

First of all you wouldn't want to work with DOM node directly. Instead you probably would want to utilize Ext.Element interface. For the purpose of assigning event handlers, Element.addListener and Element.on (these are equivalent) were created. So, for example, if we have html:

<div id="test_node"></div>

and we want add click event handler.
Let's retrieve Element:

var el = Ext.get('test_node');

Now let's check docs for click event. It's handler may have three parameters:

click( Ext.EventObject e, HTMLElement t, Object eOpts )

Knowing all this stuff we can assign handler:

//       event name      event handler
el.on(    'click'        , function(e, t, eOpts){
  // handling event here
});

Widgets event handling

Widgets event handling is pretty much similar to DOM nodes event handling.

First of all, widgets event handling is realized by utilizing Ext.util.Observable mixin. In order to handle events properly your widget must containg Ext.util.Observable as a mixin. All built-in widgets (like Panel, Form, Tree, Grid, ...) has Ext.util.Observable as a mixin by default.

For widgets there are two ways of assigning handlers. The first one - is to use on method (or addListener). Let's for example create Button widget and assign click event to it. First of all you should check event's docs for handler's arguments:

click( Ext.button.Button this, Event e, Object eOpts )

Now let's use on:

var myButton = Ext.create('Ext.button.Button', {
  text: 'Test button'
});
myButton.on('click', function(btn, e, eOpts) {
  // event handling here
  console.log(btn, e, eOpts);
});

The second way is to use widget's listeners config:

var myButton = Ext.create('Ext.button.Button', {
  text: 'Test button',
  listeners : {
    click: function(btn, e, eOpts) {
      // event handling here
      console.log(btn, e, eOpts);
    }
  }
});

Notice that Button widget is a special kind of widgets. Click event can be assigned to this widget by using handler config:

var myButton = Ext.create('Ext.button.Button', {
  text: 'Test button',
  handler : function(btn, e, eOpts) {
    // event handling here
    console.log(btn, e, eOpts);
  }
});

Custom events firing

First of all you need to register an event using addEvents method:

myButton.addEvents('myspecialevent1', 'myspecialevent2', 'myspecialevent3', /* ... */);

Using the addEvents method is optional. As comments to this method say there is no need to use this method but it provides place for events documentation.

To fire your event use fireEvent method:

myButton.fireEvent('myspecialevent1', arg1, arg2, arg3, /* ... */);

arg1, arg2, arg3, /* ... */ will be passed into handler. Now we can handle your event:

myButton.on('myspecialevent1', function(arg1, arg2, arg3, /* ... */) {
  // event handling here
  console.log(arg1, arg2, arg3, /* ... */);
});

It's worth mentioning that the best place for inserting addEvents method call is widget's initComponent method when you are defining new widget:

Ext.define('MyCustomButton', {
  extend: 'Ext.button.Button',
  // ... other configs,
  initComponent: function(){
    this.addEvents('myspecialevent1', 'myspecialevent2', 'myspecialevent3', /* ... */);
    // ...
    this.callParent(arguments);
  }
});
var myButton = Ext.create('MyCustomButton', { /* configs */ });

Preventing event bubbling

To prevent bubbling you can return false or use Ext.EventObject.preventDefault(). In order to prevent browser's default action use Ext.EventObject.stopPropagation().

For example let's assign click event handler to our button. And if not left button was clicked prevent default browser action:

myButton.on('click', function(btn, e){
  if (e.button !== 0)
    e.preventDefault();
});

That's still a constant. See the JLS for more information regarding the naming convention for constants. But in reality, it's all a matter of preference.

The names of constants in interface types should be, and final variables of class types may conventionally be, a sequence of one or more words, acronyms, or abbreviations, all uppercase, with components separated by underscore "_" characters. Constant names should be descriptive and not unnecessarily abbreviated. Conventionally they may be any appropriate part of speech. Examples of names for constants include MIN_VALUE, MAX_VALUE, MIN_RADIX, and MAX_RADIX of the class Character.

A group of constants that represent alternative values of a set, or, less frequently, masking bits in an integer value, are sometimes usefully specified with a common acronym as a name prefix, as in:

interface ProcessStates {
  int PS_RUNNING = 0;
  int PS_SUSPENDED = 1;
}

Obscuring involving constant names is rare:

• Constant names normally have no lowercase letters, so they will not normally obscure names of packages or types, nor will they normally shadow fields, whose names typically contain at least one lowercase letter.
• Constant names cannot obscure method names, because they are distinguished syntactically.

If anyone is looking for a VB.Net answer (as I was initially), here it is:

Public Function IsSatisfied() As Expression(Of Func(Of Charity, String, String, Boolean))

Return Function(charity, name, referenceNumber) (String.IsNullOrWhiteSpace(name) Or
                                                         charity.registeredName.ToLower().Contains(name.ToLower()) Or
                                                         charity.alias.ToLower().Contains(name.ToLower()) Or
                                                         charity.charityId.ToLower().Contains(name.ToLower())) And
                                                    (String.IsNullOrEmpty(referenceNumber) Or
                                                     charity.charityReference.ToLower().Contains(referenceNumber.ToLower()))
End Function

For anyone who comes here, as I did, looking for the syntax to change origin to a different location you can find that documentation here: https://help.github.com/articles/changing-a-remote-s-url/. Using git remote add to do this will result in "fatal: remote origin already exists."

Nutshell: git remote set-url origin https://github.com/username/repo

(The marked answer is correct, I'm just hoping to help anyone as lost as I was... haha)

From SQL Server 2016 you can just use

 DROP TABLE IF EXISTS ##CLIENTS_KEYWORD

On previous versions you can use

IF OBJECT_ID('tempdb..##CLIENTS_KEYWORD', 'U') IS NOT NULL
/*Then it exists*/
DROP TABLE ##CLIENTS_KEYWORD
CREATE TABLE ##CLIENTS_KEYWORD
(
   client_id INT
)

You could also consider truncating the table instead rather than dropping and recreating.

IF OBJECT_ID('tempdb..##CLIENTS_KEYWORD', 'U') IS NOT NULL
  TRUNCATE TABLE ##CLIENTS_KEYWORD
ELSE
  CREATE TABLE ##CLIENTS_KEYWORD
  (
     client_id INT
  ) 

char* result = strcpy((char*)malloc(str.length()+1), str.c_str());

Answer is NO. You might have seen an example where somebody would have set something like :

-DArguments=a=1,b=2,c=3,d=4,e=cow

Then the application would parse value of Arguments property string to get individual values. In your main you can get the key values as(Assuming input format is guaranteed):

String line = System.getProperty("Arguments");
if(line != null) {
  String str[] = line.split(",");
    for(int i=1;i<str.length;i++){
        String arr[] = str[i].split("=");
        System.out.println("Key = " + arr[0]);
        System.out.println("Value = " +  arr[1]);
    }
}

Also, the -D should be before the main class or the jar file in the java command line. Example : java -DArguments=a=1,b=2,c=3,d=4,e=cow MainClass

As DOC says, you can pass data to the handler as next:

// say your selector and click handler looks something like this...
$("some selector").on('click',{param1: "Hello", param2: "World"}, cool_function);

// in your function, just grab the event object and go crazy...
function cool_function(event){
    alert(event.data.param1);
    alert(event.data.param2);

    // access element's id where click occur
    alert( event.target.id ); 
}

Try the following:

MemoryStream stream = new MemoryStream();
Bitmap bitmap = new Bitmap();
bitmap.Save(stream, ImageFormat.Jpeg);

byte[] byteArray = stream.GetBuffer();

Make sure you are using:

System.Drawing & using System.Drawing.Imaging;

Is there a standard way in C++ to show the binary representation in memory of a number [...]?

No. There's no std::bin, like std::hex or std::dec, but it's not hard to output a number binary yourself:

You output the left-most bit by masking all the others, left-shift, and repeat that for all the bits you have.

(The number of bits in a type is sizeof(T) * CHAR_BIT.)

If you get this error in PowerShell, it's most likely because you're using Resolve-Path to resolve a remote path, e.g.

 Resolve-Path \\server\share\path

In this case, Resolve-Path returns an object that, when converted to a string, doesn't return a valid path. It returns PowerShell's internal path:

> [string](Resolve-Path \\server\share\path)
Microsoft.PowerShell.Core\FileSystem::\\server\share\path

The solution is to use the ProviderPath property on the object returned by Resolve-Path:

> Resolve-Path \\server\share\path | Select-Object -ExpandProperty PRoviderPath
\\server\share\path
> (Resolve-Path \\server\share\path).ProviderPath
\\server\share\path

Strictly speaking - you have no choice but calling either hostname(1) or - on Unix gethostname(2). This is the name of your computer. Any attempt to determine the hostname by an IP address like this

InetAddress.getLocalHost().getHostName()

is bound to fail in some circumstances:

• The IP address might not resolve into any name. Bad DNS setup, bad system setup or bad provider setup may be the reason for this.
• A name in DNS can have many aliases called CNAMEs. These can only be resolved in one direction properly: name to address. The reverse direction is ambiguous. Which one is the "official" name?
• A host can have many different IP addresses - and each address can have many different names. Two common cases are: One ethernet port has several "logical" IP addresses or the computer has several ethernet ports. It is configurable whether they share an IP or have different IPs. This is called "multihomed".
• One Name in DNS can resolve to several IP Addresses. And not all of those addresses must be located on the same computer! (Usecase: A simple form of load-balancing)
• Let's not even start talking about dynamic IP addresses.

Also don't confuse the name of an IP-address with the name of the host (hostname). A metaphor might make it clearer:

There is a large city (server) called "London". Inside the city walls much business happens. The city has several gates (IP addresses). Each gate has a name ("North Gate", "River Gate", "Southampton Gate"...) but the name of the gate is not the name of the city. Also you cannot deduce the name of the city by using the name of a gate - "North Gate" would catch half of the bigger cities and not just one city. However - a stranger (IP packet) walks along the river and asks a local: "I have a strange address: 'Rivergate, second left, third house'. Can you help me?" The local says: "Of course, you are on the right road, simply go ahead and you will arrive at your destination within half an hour."

This illustrates it pretty much I think.

The good news is: The real hostname is usually not necessary. In most cases any name which resolves into an IP address on this host will do. (The stranger might enter the city by Northgate, but helpful locals translate the "2nd left" part.)

In the remaining corner cases you must use the definitive source of this configuration setting - which is the C function gethostname(2). That function is also called by the program hostname.

I was also facing the same issue, if suppose that particular fragment is inflated across various screens, there is a chance that the visibility modes set inside the if statements to not function according to our needs as the condition might have been reset when it is inflated a number of times in our app.

In my case, I have to change the visibility mode in one fragment(child fragment) based on a button clicked in another fragment(parent fragment). So I stored the buttonClicked boolean value in a variable of parent fragment and passed it as a parameter to a function in the child fragment. So the visibility modes in the child fragments is changed based on that boolean value that is received via parameter. But as this child fragment is inflated across various screens, the visibility modes kept on resetting even if I make it hidden using View.GONE.

In order to avoid this conflict, I declared a static boolean variable in the child fragment and whenever that boolean value is received from the parent fragment I stored it in the static variable and then changed the visibility modes based on that static variable in the child fragment.

That solved the issue for me.

Easier to understand is like this:

String s = "a,b,c,d,e";
String[] sArr = s.split(",");
List<String> sList = Arrays.asList(sArr);

Use following code to show menu instead go to href addres

function show_more_menu(e) {_x000D_
  if( !confirm(`Go to ${e.target.href} ?`) ) e.preventDefault();_x000D_
}

<a href='more.php' onclick="show_more_menu(event)"> More >>> </a>

Here is what I have done to make the right scroll bar work. The only thing needed to be considered is when using 'direction: rtl' and whole table also need to be changed. Hopefully this gives you an idea how to do it.

Example:

<table dir='rtl'><tr><td>Display Last</td><td>Display Second</td><td>Display First</td></table>

Check this: JSFiddle

start "" AcroRd32.exe /A "page=207" "C:\Users\abc\Desktop\abc xyz def\abc def xyz 2015.pdf"

You may try this, I did it finally, it works!

I have resolved this issue.

If your jar files are older than the latest version and the browser has updated to latest version, then download:

• the latest jar files from the selenium website http://www.seleniumhq.org/download/, and
• the latest geckodriver.exe.

    Object object = new Object();

    // First way
    List objects1 = new ArrayList<Object>();
    objects1.add(object);

    // second way
    List<Object> objects2 = Arrays.asList(object);

    // Third way
    List<Object> objects3 = Collections.singletonList(object);

It is possible to use a ES6 function Array.prototype.findIndex.

MDN says:

The findIndex() method returns the index of the first element in the array that satisfies the provided testing function. Otherwise -1 is returned.

var fooArray = [5, 10, 15, 20, 25];
console.log(fooArray.findIndex(num=> { return num > 5; }));

// expected output: 1

Find an index by object property.

To find an index by object property:

yourArray.findIndex(obj => obj['propertyName'] === yourValue)

For example, there is a such array:

let someArray = [
    { property: 'OutDate' },
    { property: 'BeginDate'},
    { property: 'CarNumber' },
    { property: 'FirstName'}
];

Then, code to find an index of necessary property looks like that:

let carIndex = someArray.findIndex( filterCarObj=> 
    filterCarObj['property'] === 'CarNumber');

Found this thread when trying (unsuccessfully) to load a local json file. This solution worked for me...

function load_json(src) {
  var head = document.getElementsByTagName('head')[0];

  //use class, as we can't reference by id
  var element = head.getElementsByClassName("json")[0];

  try {
    element.parentNode.removeChild(element);
  } catch (e) {
    //
  }

  var script = document.createElement('script');
  script.type = 'text/javascript';
  script.src = src;
  script.className = "json";
  script.async = false;
  head.appendChild(script);

  //call the postload function after a slight delay to allow the json to load
  window.setTimeout(postloadfunction, 100)
}

... and is used like this...

load_json("test2.html.js")

...and this is the <head>...

<head>
  <script type="text/javascript" src="test.html.js" class="json"></script>
</head>

For that single rule you have, there isn't any shorter way to do it. The child combinator is the same in CSS and in Sass/SCSS and there's no alternative to it.

However, if you had multiple rules like this:

#foo > ul > li > ul > li > a:nth-child(3n+1) {
    color: red;
}

#foo > ul > li > ul > li > a:nth-child(3n+2) {
    color: green;
}

#foo > ul > li > ul > li > a:nth-child(3n+3) {
    color: blue;
}

You could condense them to one of the following:

/* Sass */
#foo > ul > li > ul > li
    > a:nth-child(3n+1)
        color: red
    > a:nth-child(3n+2)
        color: green
    > a:nth-child(3n+3)
        color: blue

/* SCSS */
#foo > ul > li > ul > li {
    > a:nth-child(3n+1) { color: red; }
    > a:nth-child(3n+2) { color: green; }
    > a:nth-child(3n+3) { color: blue; }
}

A simple map builder is trivial to write:

public class Maps {

    public static <Q,W> MapWrapper<Q,W> map(Q q, W w) {
        return new MapWrapper<Q, W>(q, w);
    }

    public static final class MapWrapper<Q,W> {
        private final HashMap<Q,W> map;
        public MapWrapper(Q q, W w) {
            map = new HashMap<Q, W>();
            map.put(q, w);
        }
        public MapWrapper<Q,W> map(Q q, W w) {
            map.put(q, w);
            return this;
        }
        public Map<Q,W> getMap() {
            return map;
        }
    }

    public static void main(String[] args) {
        Map<String, Integer> map = Maps.map("one", 1).map("two", 2).map("three", 3).getMap();
        for (Map.Entry<String, Integer> entry : map.entrySet()) {
            System.out.println(entry.getKey() + " = " + entry.getValue());
        }
    }
}

paint.setStrokeWidth(3);

paint.setColor(BLACK);

and either one of your drawRect should work.

def interpolate(x1: float, x2: float, y1: float, y2: float, x: float):
    """Perform linear interpolation for x between (x1,y1) and (x2,y2) """

    return ((y2 - y1) * x + x2 * y1 - x1 * y2) / (x2 - x1)

This is an updated version for .NET 4.5 and newer using async/await and IEnumerables:

public static class CompressionExtensions
{
    public static async Task<IEnumerable<byte>> Zip(this object obj)
    {
        byte[] bytes = obj.Serialize();

        using (MemoryStream msi = new MemoryStream(bytes))
        using (MemoryStream mso = new MemoryStream())
        {
            using (var gs = new GZipStream(mso, CompressionMode.Compress))
                await msi.CopyToAsync(gs);

            return mso.ToArray().AsEnumerable();
        }
    }

    public static async Task<object> Unzip(this byte[] bytes)
    {
        using (MemoryStream msi = new MemoryStream(bytes))
        using (MemoryStream mso = new MemoryStream())
        {
            using (var gs = new GZipStream(msi, CompressionMode.Decompress))
            {
                // Sync example:
                //gs.CopyTo(mso);

                // Async way (take care of using async keyword on the method definition)
                await gs.CopyToAsync(mso);
            }

            return mso.ToArray().Deserialize();
        }
    }
}

public static class SerializerExtensions
{
    public static byte[] Serialize<T>(this T objectToWrite)
    {
        using (MemoryStream stream = new MemoryStream())
        {
            BinaryFormatter binaryFormatter = new BinaryFormatter();
            binaryFormatter.Serialize(stream, objectToWrite);

            return stream.GetBuffer();
        }
    }

    public static async Task<T> _Deserialize<T>(this byte[] arr)
    {
        using (MemoryStream stream = new MemoryStream())
        {
            BinaryFormatter binaryFormatter = new BinaryFormatter();
            await stream.WriteAsync(arr, 0, arr.Length);
            stream.Position = 0;

            return (T)binaryFormatter.Deserialize(stream);
        }
    }

    public static async Task<object> Deserialize(this byte[] arr)
    {
        object obj = await arr._Deserialize<object>();
        return obj;
    }
}

With this you can serialize everything BinaryFormatter supports, instead only of strings.

Edit:

In case, you need take care of Encoding, you could just use Convert.ToBase64String(byte[])...

Take a look at this answer if you need an example!

lodash has a round method:

_.round(4.006);
// => 4

_.round(4.006, 2);
// => 4.01

_.round(4060, -2);
// => 4100

Docs.

Source.

You should look at the with binding, as well as controlsDescendantBindings http://knockoutjs.com/documentation/custom-bindings-controlling-descendant-bindings.html

I'm a little bit late to this party but seems that nobody actually wrote all use cases. So...

Only supported version of PowerShell these days (fall of 2020 and beyond) are:

• Windows PowerShell 5.1.x
• PowerShell 7.0.x.

You don't want to or you shouldn't work with different versions of PowerShell.

Both versions (or any another version which you could come around WPS 3.0-5.0, PS Core 6.x.x on some outdated stations) share the same comment functionality.

One line comments

# Get all Windows Service processes <-- one line comment, it starts with '#'
Get-Process -Name *host*

Get-Process -Name *host* ## You could put as many ### as you want, it does not matter

Get-Process -Name *host* # | Stop-Service # Everything from the first # until end of the line is treated as comment

Stop-Service -DisplayName Windows*Update # -WhatIf # You can use it to comment out cmdlet switches

Multi line comments

<#
Everyting between '< #' and '# >' is 
treated as a comment. A typical use case is for help, see below.

# You could also have a single line comment inside the multi line comment block.
# Or two... :)

#>

<#
.SYNOPSIS
    A brief description of the function or script.
    This keyword can be used only once in each topic.

.DESCRIPTION
    A detailed description of the function or script.
    This keyword can be used only once in each topic.

.NOTES
    Some additional notes. This keyword can be used only once in each topic.
    This keyword can be used only once in each topic.

.LINK
    A link used when Get-Help with a switch -OnLine is used.
    This keyword can be used only once in each topic.

.EXAMPLE
    Example 1
    You can use this keyword as many as you want.

.EXAMPLE
    Example 2
    You can use this keyword as many as you want.
#>

Nested multi line comments

<#
Nope, these are not allowed in PowerShell.

<# This will break your first multiline comment block... #>
...and this will throw a syntax error.
#>

In code nested multi line comments

<# 
The multi line comment opening/close
can be also used to comment some nested code
or as an explanation for multi chained operations..
#>
Get-Service | <# Step explanation #>
Where-Object { $_.Status -eq [ServiceProcess.ServiceControllerStatus]::Stopped } | 
<# Format-Table -Property DisplayName, Status -AutoSize |#>
Out-File -FilePath Services.txt -Encoding Unicode

Edge case scenario

# Some well written script
exit
Writing something after exit is possible but not recommended.
It isn't a comment.
Especially in Visual Studio Code, these words baffle PSScriptAnalyzer.
You could actively break your session in VS Code.

This following program can handle large numbers ( number of digits greater than 20 )

package com.isEven.java;
import java.util.Scanner;

public class isEvenValuate{

public static void main(String[] args) {            

        Scanner in = new Scanner(System.in);
        String digit = in.next();

        int y = Character.getNumericValue(digit.charAt(digit.length()-1));

        boolean isEven = (y&1)==0;

        if(isEven)
            System.out.println("Even");
        else
            System.out.println("Odd");

    }
}

Here is the output ::

  122873215981652362153862153872138721637272
  Even

CAUTION: Do not use jQuery to test your jQuery

When you are using any of the code provided by other users and if you want to display the message on your window and not on the alert or console.log, Then make sure you use javascript and not jquery.

Not everyone want to use alert or console.log

alert('jquery is working');
console.log('jquery is working');

The code below will fail to display the message
Because we are using jquery inside the else (how the hell the message displays on your screen if you do not have jquery)

if ('undefined' == typeof window.jQuery) {
    $('#selector').appendTo('jquery is NOT working');
} else {
    $('#selector').appendTo('jquery is working');
}

Use JavaScript instead

if ('undefined' == typeof window.jQuery) {
    document.getElementById('selector').innerHTML = "jquery is NOT working";
} else {
    document.getElementById('selector').innerHTML = "jquery is working";
}

You could just do it manually.

NB: might be better to use a HashMap instead of an inner class for the opts.

/** convenient "-flag opt" combination */
private class Option {
     String flag, opt;
     public Option(String flag, String opt) { this.flag = flag; this.opt = opt; }
}

static public void main(String[] args) {
    List<String> argsList = new ArrayList<String>();  
    List<Option> optsList = new ArrayList<Option>();
    List<String> doubleOptsList = new ArrayList<String>();

    for (int i = 0; i < args.length; i++) {
        switch (args[i].charAt(0)) {
        case '-':
            if (args[i].length < 2)
                throw new IllegalArgumentException("Not a valid argument: "+args[i]);
            if (args[i].charAt(1) == '-') {
                if (args[i].length < 3)
                    throw new IllegalArgumentException("Not a valid argument: "+args[i]);
                // --opt
                doubleOptsList.add(args[i].substring(2, args[i].length));
            } else {
                if (args.length-1 == i)
                    throw new IllegalArgumentException("Expected arg after: "+args[i]);
                // -opt
                optsList.add(new Option(args[i], args[i+1]));
                i++;
            }
            break;
        default:
            // arg
            argsList.add(args[i]);
            break;
        }
    }
    // etc
}

Seeing that this question is getting quite some upvotes, I add new information (I am not sure if this is new, but I couldn't find it at the time)

• The home of JSON Schema
• An implementation of JSON Schema validation for Python
• Related hacker news discussion
• A json schema generator in python, which is what I was looking for.

You can use scalar multiplication to modify each element in your vector.

> r <- 0:10 
> r <- r * 2
> r 
 [1]  0  2  4  6  8 10 12 14 16 18 20

or

> r <- 0:10 * 2 
> r 
 [1]  0  2  4  6  8 10 12 14 16 18 20

This is an improve of @ComFreek ans:

<form id="myform">
  <!-- form elements -->
  <a href="javascript:;" onclick="document.getElementById('myform').submit()">Submit</a>
</form>

So the will not trigger action and reload your page. Specially if your are developing with a framework with SPA.

It is enough to use color property alongside with -webkit-text-fill-color this way:

    input {_x000D_
        color: red; /* color of caret */_x000D_
        -webkit-text-fill-color: black; /* color of text */_x000D_
    }

<input type="text"/>

Works in WebKit browsers (but not in iOS Safari, where is still used system color for caret) and also in Firefox.

The -webkit-text-fill-color CSS property specifies the fill color of characters of text. If this property is not set, the value of the color property is used. MDN

So this means we set text color with text-fill-color and caret color with standard color property. In unsupported browser, caret and text will have same color – color of the caret.

One-liner solution here:

var1 = locals().get("var1", "default value")

Instead of having NameError, this solution will set var1 to default value if var1 hasn't been defined yet.

Here's how it looks like in Python interactive shell:

>>> var1
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'var1' is not defined
>>> var1 = locals().get("var1", "default value 1")
>>> var1
'default value 1'
>>> var1 = locals().get("var1", "default value 2")
>>> var1
'default value 1'
>>>

Give it a try to the jQuery Audit extension (https://chrome.google.com/webstore/detail/jquery-audit/dhhnpbajdcgdmbbcoakfhmfgmemlncjg), after installing follow these steps:

1. Inspect the element
2. On the new 'jQuery Audit' tab expand the Events property
3. Choose for the Event you need
4. From the handler property, right click over function and select 'Show function definition'
5. You will now see the Event binding code
6. Click on the 'Pretty print' button for a more readable view of the code

If you are using a virtual hosts configuration file, make sure the virtual host in question has the directive AllowOverride All somewhere like this:

<VirtualHost *:80>
        ...
    <Directory "directory/of/your/.htaccess">
        AllowOverride All
    </Directory>
</VirtualHost>

Basically, this states to allow processing of all .htaccess directives.

I was getting confused with wordpress shortcode attributes, I decided to write a custom function to handle all possibilities. maybe it's useful for someone:

function stringToBool($str){
    if($str === 'true' || $str === 'TRUE' || $str === 'True' || $str === 'on' || $str === 'On' || $str === 'ON'){
        $str = true;
    }else{
        $str = false;
    }
    return $str;
}
stringToBool($atts['onOrNot']);

I already found it:

SELECT grantee, privilege_type 
FROM information_schema.role_table_grants 
WHERE table_name='mytable'

Following explanation actually explains how wait() and signal() of monitor differ from P and V of semaphore.

The wait() and signal() operations on condition variables in a monitor are similar to P and V operations on counting semaphores.

A wait statement can block a process's execution, while a signal statement can cause another process to be unblocked. However, there are some differences between them. When a process executes a P operation, it does not necessarily block that process because the counting semaphore may be greater than zero. In contrast, when a wait statement is executed, it always blocks the process. When a task executes a V operation on a semaphore, it either unblocks a task waiting on that semaphore or increments the semaphore counter if there is no task to unlock. On the other hand, if a process executes a signal statement when there is no other process to unblock, there is no effect on the condition variable. Another difference between semaphores and monitors is that users awaken by a V operation can resume execution without delay. Contrarily, users awaken by a signal operation are restarted only when the monitor is unlocked. In addition, a monitor solution is more structured than the one with semaphores because the data and procedures are encapsulated in a single module and that the mutual exclusion is provided automatically by the implementation.

Link: here for further reading. Hope it helps.

Try using the following code snippet. This should solve your issue.

body, html { 
    overflow-x: hidden; 
    overflow-y: auto;
}

Remember that running the command

git config --global core.excludesfile '~/.gitignore'

will just set up the global file, but will NOT create it. For Windows check your Users directory for the .gitconfig file, and edit it to your preferences. In my case It's like that:

[core]
  excludesfile = c:/Users/myuser/Dropbox/Apps/Git/.gitignore

An alternative option is to use str_sort() from library stringr, with the argument numeric = TRUE. This will correctly order column that include numbers not just alphabetically:

str_sort(c("V3", "V1", "V10"), numeric = TRUE)

# [1] V1 V3 V11

Top Answer from Jon Adams

Here is how to implement this for the PowerShell folks

$IncommingPath = "F:\WebContent"
$Acl = Get-Acl $IncommingPath
$Ar = New-Object  system.security.accesscontrol.filesystemaccessrule("IIS AppPool\DefaultAppPool","FullControl","ContainerInherit, ObjectInherit", "None", "Allow")
$Acl.SetAccessRule($Ar)
Set-Acl $IncommingPath $Acl

It most likely means the hostname can't be resolved.

import socket
socket.getaddrinfo('localhost', 8080)

If it doesn't work there, it's not going to work in the Bottle example. You can try '127.0.0.1' instead of 'localhost' in case that's the problem.

ffmpeg \
  -i input_1.mp4 \
  -i input_2.mp4 \
  -filter_complex '[0:v]pad=iw*2:ih[int];[int][1:v]overlay=W/2:0[vid]' \
  -map [vid] \
  -c:v libx264 \
  -crf 23 \
  -preset veryfast \
  output.mp4

I have been working on to write a custom module in Drupal 7 and got the same error:

Notice: Trying to get property of non-object

My code is something like this:

function example_node_access($node, $op, $account) {
  if ($node->type == 'page' && $op == 'update') {
    drupal_set_message('This poll has been published, you may not make changes to it.','error');
    return NODE_ACCESS_DENY;    
  }
}

Solution: I just added a condition if (is_object($sqlResult)), and everything went fine.

Here is my final code:

function mediaten_node_access($node, $op, $account) {

    if (is_object($node)){

     if ($node->type == 'page' && $op == 'update') {
       drupal_set_message('This poll has been published, you may not make changes.','error');
       return NODE_ACCESS_DENY;    
      }

    }

}

append() creates a new array which can be the old array with the appended element.

I think it's more normal to use the proper method for adding an element:

a = numpy.append(a, a[0])

This is the easiest way:

php -f /home/your_username/public_html/script.php

And if you want to log the script output to a file, add this to the end of the command:

>> /home/your_username/logs/someFile.txt 2>&1

    //import java.util.ArrayList;
    //import org.bson.Document;

    Document root = Document.parse("{\n"
            + "  \"name\": \"Json\",\n"
            + "  \"detail\": {\n"
            + "    \"first_name\": \"Json\",\n"
            + "    \"last_name\": \"Scott\",\n"
            + "    \"age\": \"23\"\n"
            + "  },\n"
            + "  \"status\": \"success\"\n"
            + "}");

    System.out.println(((String) root.get("name")));
    System.out.println(((String) ((Document) root.get("detail")).get("first_name")));
    System.out.println(((String) ((Document) root.get("detail")).get("last_name")));
    System.out.println(((String) ((Document) root.get("detail")).get("age")));
    System.out.println(((String) root.get("status")));

Add:

using System.Linq;

to the top of your file.

And then:

Car[] carList = ...
var carMake = 
    from item in carList
    where item.Model == "bmw" 
    select item.Make;

or if you prefer the fluent syntax:

var carMake = carList
    .Where(item => item.Model == "bmw")
    .Select(item => item.Make);

Things to pay attention to:

• The usage of item.Make in the select clause instead if s.Make as in your code.
• You have a whitespace between item and .Model in your where clause

You can see the list of color schemes under /usr/share/vim/vimNN/colors (with NN being the version, e.g. vim74 for vim 7.4).

This is explained here.

On the linux servers I use via ssh, TAB prints ^I and CTRLd prints ^D.

in the DBAdaper i.e Data Base helper class declare the table like this

 private static final String USERDETAILS=
    "create table userdetails(usersno integer primary key autoincrement,userid text not null ,username text not null,password text not null,photo BLOB,visibility text not null);";

insert the values like this,

first convert the images as byte[]

ByteArrayOutputStream baos = new ByteArrayOutputStream();  
Bitmap bitmap = ((BitmapDrawable)getResources().getDrawable(R.drawable.common)).getBitmap();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);   
byte[] photo = baos.toByteArray(); 
db.insertUserDetails(value1,value2, value3, photo,value2);

in DEAdaper class

 public long insertUserDetails(String uname,String userid, String pass, byte[] photo,String visibility) 
{
    ContentValues initialValues = new ContentValues();
    initialValues.put("username", uname);
    initialValues.put("userid",userid);
    initialValues.put("password", pass);
    initialValues.put("photo",photo);
    initialValues.put("visibility",visibility);
    return db.insert("userdetails", null, initialValues);
}

retrieve the image as follows

Cursor cur=your query;
while(cur.moveToNext())
{
     byte[] photo=cur.getBlob(index of blob cloumn);
}

convert the byte[] into image

ByteArrayInputStream imageStream = new ByteArrayInputStream(photo);
Bitmap theImage= BitmapFactory.decodeStream(imageStream);

I think this content may solve your problem

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

Should be easy like this :

Get-ComputerInfo  | select windowsversion