Even without looking at assembly, the most obvious reason is that /= 2 is probably optimized as >>=1 and many processors have a very quick shift operation. But even if a processor doesn't have a shift operation, the integer division is faster than floating point division.

Edit: your milage may vary on the "integer division is faster than floating point division" statement above. The comments below reveal that the modern processors have prioritized optimizing fp division over integer division. So if someone were looking for the most likely reason for the speedup which this thread's question asks about, then compiler optimizing /=2 as >>=1 would be the best 1st place to look.

On an unrelated note, if n is odd, the expression n*3+1 will always be even. So there is no need to check. You can change that branch to

{
   n = (n*3+1) >> 1;
   count += 2;
}

So the whole statement would then be

if (n & 1)
{
    n = (n*3 + 1) >> 1;
    count += 2;
}
else
{
    n >>= 1;
    ++count;
}

You can use Environment Replacement in your Dockerfile as follows:

ENV PATH="/opt/gtk/bin:${PATH}"

For complete the accepted answer, Had the same issue. First specified the remote

git remote add origin https://github.com/XXXX/YYY.git

git fetch 

Then get the code

git pull origin master

I always go for the second method (using the GString template), though when there are more than a couple of parameters like you have, I tend to wrap them in ${X} as I find it makes it more readable.

Running some benchmarks (using Nagai Masato's excellent GBench module) on these methods also shows templating is faster than the other methods:

@Grab( 'com.googlecode.gbench:gbench:0.3.0-groovy-2.0' )
import gbench.*

def (foo,bar,baz) = [ 'foo', 'bar', 'baz' ]
new BenchmarkBuilder().run( measureCpuTime:false ) {
  // Just add the strings
  'String adder' {
    foo + bar + baz
  }
  // Templating
  'GString template' {
    "$foo$bar$baz"
  }
  // I find this more readable
  'Readable GString template' {
    "${foo}${bar}${baz}"
  }
  // StringBuilder
  'StringBuilder' {
    new StringBuilder().append( foo )
                       .append( bar )
                       .append( baz )
                       .toString()
  }
  'StringBuffer' {
    new StringBuffer().append( foo )
                      .append( bar )
                      .append( baz )
                      .toString()
  }
}.prettyPrint()

That gives me the following output on my machine:

Environment
===========
* Groovy: 2.0.0
* JVM: Java HotSpot(TM) 64-Bit Server VM (20.6-b01-415, Apple Inc.)
    * JRE: 1.6.0_31
    * Total Memory: 81.0625 MB
    * Maximum Memory: 123.9375 MB
* OS: Mac OS X (10.6.8, x86_64) 

Options
=======
* Warm Up: Auto 
* CPU Time Measurement: Off

String adder               539
GString template           245
Readable GString template  244
StringBuilder              318
StringBuffer               370

So with readability and speed in it's favour, I'd recommend templating ;-)

NB: If you add toString() to the end of the GString methods to make the output type the same as the other metrics, and make it a fairer test, StringBuilder and StringBuffer beat the GString methods for speed. However as GString can be used in place of String for most things (you just need to exercise caution with Map keys and SQL statements), it can mostly be left without this final conversion

Adding these tests (as it has been asked in the comments)

  'GString template toString' {
    "$foo$bar$baz".toString()
  }
  'Readable GString template toString' {
    "${foo}${bar}${baz}".toString()
  }

Now we get the results:

String adder                        514
GString template                    267
Readable GString template           269
GString template toString           478
Readable GString template toString  480
StringBuilder                       321
StringBuffer                        369

So as you can see (as I said), it is slower than StringBuilder or StringBuffer, but still a bit faster than adding Strings...

But still lots more readable.

Edit after comment by ruralcoder below

Updated to latest gbench, larger strings for concatenation and a test with a StringBuilder initialised to a good size:

@Grab( 'org.gperfutils:gbench:0.4.2-groovy-2.1' )

def (foo,bar,baz) = [ 'foo' * 50, 'bar' * 50, 'baz' * 50 ]
benchmark {
  // Just add the strings
  'String adder' {
    foo + bar + baz
  }
  // Templating
  'GString template' {
    "$foo$bar$baz"
  }
  // I find this more readable
  'Readable GString template' {
    "${foo}${bar}${baz}"
  }
  'GString template toString' {
    "$foo$bar$baz".toString()
  }
  'Readable GString template toString' {
    "${foo}${bar}${baz}".toString()
  }
  // StringBuilder
  'StringBuilder' {
    new StringBuilder().append( foo )
                       .append( bar )
                       .append( baz )
                       .toString()
  }
  'StringBuffer' {
    new StringBuffer().append( foo )
                      .append( bar )
                      .append( baz )
                      .toString()
  }
  'StringBuffer with Allocation' {
    new StringBuffer( 512 ).append( foo )
                      .append( bar )
                      .append( baz )
                      .toString()
  }
}.prettyPrint()

gives

Environment
===========
* Groovy: 2.1.6
* JVM: Java HotSpot(TM) 64-Bit Server VM (23.21-b01, Oracle Corporation)
    * JRE: 1.7.0_21
    * Total Memory: 467.375 MB
    * Maximum Memory: 1077.375 MB
* OS: Mac OS X (10.8.4, x86_64)

Options
=======
* Warm Up: Auto (- 60 sec)
* CPU Time Measurement: On

                                    user  system  cpu  real

String adder                         630       0  630   647
GString template                      29       0   29    31
Readable GString template             32       0   32    33
GString template toString            429       0  429   443
Readable GString template toString   428       1  429   441
StringBuilder                        383       1  384   396
StringBuffer                         395       1  396   409
StringBuffer with Allocation         277       0  277   286

I'm new to SQL, but came across this issue in a course I was taking and found that assigning the query to the project specifically helped to eliminate the multi-part error. For example the project I created was CTU SQL Project so I made sure I started my script with USE [CTU SQL Project] as my first line like below.

USE [CTU SQL Project]
SELECT Advisors.First_Name, Advisors.Last_Name...and so on.

Your currently selected backend, 'agg' does not support show().

AGG backend is for writing to file, not for rendering in a window. See the backend FAQ at the matplotlib web site.

ImportError: No module named _backend_gdk

For the second error, maybe your matplotlib distribution is not compiled with GTK support, or you miss the PyGTK package. Try to install it.

Do you call the show() method inside a terminal or application that has access to a graphical environment?

Try other GUI backends, in this order:

• TkAgg
• WX
• QTAgg
• QT4Agg

We managed installation of netbeans 6.8 under windows 8 successfully the following way:

• Don't execute but unzip netbeans-6.8-ml-windows.exe with 7zip (or other unzipper) in an emtpy folder
• execute cmd.exe as administrator
• cd to the folder in which you unzipped the installer
• execute 'java org.netbeans.installer.Installer'

-> installation executes without any errors

'.*$

Starting with a single quote ('), match any character (.) zero or more times (*) until the end of the line ($).

Since you are using an INNER JOIN you can just put the conditions in the WHERE clause, like this:

SELECT 
    p1.kArtikel, 
    p1.cName, 
    p1.cKurzBeschreibung, 
    p1.dLetzteAktualisierung, 
    p1.dErstellt, 
    p1.cSeo,
    p2.kartikelpict,
    p2.nNr,
    p2.cPfad  
FROM 
    tartikel AS p1 INNER JOIN tartikelpict AS p2 
    ON p1.kArtikel = p2.kArtikel
WHERE
  DATE(dErstellt) > (NOW() - INTERVAL 7 DAY)
  AND p2.nNr = 1
ORDER BY 
  p1.kArtikel DESC
LIMIT
    100;

Depending on your usage, I had success with the following:

ssh root@server "script"

This will prompt for the root password and then execute the command correctly.

You can use \t to create a tab in a file.

In PHP 7 we can use:

ini_set('magic_quotes_runtime', 0);

instead of set_magic_quotes_runtime(0);

Use:

git remote prune <remote>

Where <remote> is a remote source name like origin or upstream.

Example: git remote prune origin

namespace TestCSharp2
{
    **public** class Class2
    {
        int i;
        public void setValue(int i)
        {
            this.i = i;
        }
        public int getValue()
        {
        return this.i;
        }
    }
}

Add the 'Public' declaration before 'class Class2'.

If checkout master was the last thing you did, then the reflog entry HEAD@{1} will contain your commits (otherwise use git reflog or git log -p to find them). Use git merge HEAD@{1} to fast forward them into master.

EDIT:

As noted in the comments, Git Ready has a great article on this.

git reflog and git reflog --all will give you the commit hashes of the mis-placed commits.

Source: http://gitready.com/intermediate/2009/02/09/reflog-your-safety-net.html

The shell process is $$ since it is a special parameter

On Linux, the proc(5) filesystem gives a lot of information about processes. Perhaps pgrep(1) (which accesses /proc) might help too.

So try cat /proc/$$/status to get the status of the shell process.

Hence, its parent process id could be retrieved with e.g.

  parpid=$(awk '/PPid:/{print $2}' /proc/$$/status)

Then use $parpid in your script to refer to the parent process pid (the parent of the shell).

But I don't think you need it!

Read some Bash Guide (or with caution advanced bash scripting guide, which has mistakes) and advanced linux programming.

Notice that some server daemon processes (wich usually need to be unique) are explicitly writing their pid into /var/run, e.g. the  sshd server daemon is writing its pid into the textual file /var/run/sshd.pid). You may want to add such a feature into your own server-like programs (coded in C, C++, Ocaml, Go, Rust or some other compiled language).

Try checking the IsDisposed property before accessing the control. You can also check it on the FormClosing event, assuming you're using the FormClosed event.

We do stop the Timer on the FormClosing event and we do check the IsDisposed property on the schedule component before using it in the Timer Tick event but it doesn't help.

Calling GC.Collect before checking IsDisposed may help, but be careful with this. Read this article by Rico Mariani "When to call GC.Collect()".

In OS X, too see the connections directly on the network interface, just do:

$ lsof -n -i4TCP:27017

mongod     2191 inanc    7u  IPv4 0xab6d9f844e21142f  0t0  TCP 127.0.0.1:27017 (LISTEN)
mongod     2191 inanc   33u  IPv4 0xab6d9f84604cd757  0t0  TCP 127.0.0.1:27017->127.0.0.1:56078 (ESTABLISHED)
stores.te 18704 inanc    6u  IPv4 0xab6d9f84604d404f  0t0  TCP 127.0.0.1:56078->127.0.0.1:27017 (ESTABLISHED)

• No need to use grep etc, just use the lsof's arguments.

• Too see the connections on MongoDb's CLI, see @milan's answer (which I just edited).

ZXing is a free open source Java library to read and generate barcode images. You need to get the source code and build the jars yourself. Here's a simple tutorial that I wrote for building with ZXing jars and writing your first program with ZXing.

[http://www.vineetmanohar.com/2010/09/java-barcode-api/]

No, how you are doing it is correct.

http://www.w3.org/MarkUp/html-spec/html-spec_8.html#SEC8.2.2

If trigger("chosen:updated"); not working, use .trigger("liszt:updated"); of @Nhan Tran it is working fine.

Rebasing can be a real headache. You have to resolve the merge conflicts and continue rebasing. For example you can use the merge tool (which differs depending on your settings)

git mergetool

Then add your changes and go on

git rebase --continue

Good luck

I think you probably want to use a token list for this purpose: to set up the token list \newtoks\packagename to assign the name: \packagename={New Name for the package} to put the name into your output: \the\packagename.

In C# 8.0 and later you can use [^5..] to get the last five characters combined with a ? operator to avoid a potential ArgumentOutOfRangeException.

string input1 = "0123456789";
string input2 = "0123";
Console.WriteLine(input1.Length >= 5 ? input1[^5..] : input1); //returns 56789
Console.WriteLine(input2.Length >= 5 ? input2[^5..] : input2); //returns 0123

index-from-end-operator and range-operator

I guess a little more convenient and structured way is to use Html helper. In your view it can be look like:

@{
 var htmlAttr = new Dictionary<string, object>();
 htmlAttr.Add("id", strElementId);
 if (!CSSClass.IsEmpty())
 {
   htmlAttr.Add("class", strCSSClass);
 }
}

@* ... *@

@Html.TextBox("somename", "", htmlAttr)

If this way will be useful for you i recommend to define dictionary htmlAttr in your model so your view doesn't need any @{ } logic blocks (be more clear).

Refer this link for linux command linux http://linuxcommand.org/man_pages/grep1.html

for displaying line no ,line of code and file use this command in your terminal or cmd, GitBash(Powered by terminal)

grep -irn "YourStringToBeSearch"

If you're on Linux, or have cygwin available on Windows, you can run the input XML through a simple sed script that will replace <Active>True</Active> with <Active>true</Active>, like so:

cat <your XML file> | sed 'sX<Active>True</Active>X<Active>true</Active>X' | xmllint --schema -

If you're not, you can still use a non-validating xslt pocessor (xalan, saxon etc.) to run a simple xslt transformation on the input, and only then pipe it to xmllint.

What the xsl should contain something like below, for the example you listed above (the xslt processor should be 2.0 capable):

<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
    <xsl:output method="xml" indent="yes"/>
    <xsl:template match="/">
    <xsl:for-each select="XML">
        <xsl:for-each select="Active">
            <xsl:value-of select=" replace(current(), 'True','true')"/>
        </xsl:for-each>
    </xsl:for-each>
    </xsl:template>
</xsl:stylesheet>

If you are using linux system then you need to add

using namespace std;

Below headers

If windows then make sure you put headers correctly #include<iostream.h>

#include<string.h>

Refer this it work perfectly.

#include <iostream>
#include <string>

int main ()
{
std::string str="We think in generalities, but we live in details.";
                                       // (quoting Alfred N. Whitehead)

  std::string str2 = str.substr (3,5);     // "think"

   std::size_t pos = str.find("live");      // position of "live" in str

  std::string str3 = str.substr (pos);     
// get from "live" to the end

  std::cout << str2 << ' ' << str3 << '\n';

  return 0;
}

This question was asked a long time ago so I thought I'd post an updated answer.

You should now avoid using @import. Taken from the docs:

Sass will gradually phase it out over the next few years, and eventually remove it from the language entirely. Prefer the @use rule instead.

A full list of reasons can be found here

You should now use @use as shown below:

_variables.scss

$text-colour: #262626;

_otherFile.scss

@use 'variables'; // Path to _variables.scss Notice how we don't include the underscore or file extension

body {
  // namespace.$variable-name
  // namespace is just the last component of its URL without a file extension
  color: variables.$text-colour;
}

You can also create an alias for the namespace:

_otherFile.scss

@use 'variables' as v;

body {
  // alias.$variable-name
  color: v.$text-colour;
}

EDIT As pointed out by @und3rdg at the time of writing (November 2020) @use is currently only available for Dart Sass and not LibSass (now deprecated) or Ruby Sass. See https://sass-lang.com/documentation/at-rules/use for the latest compatibility

Given a list List<Object> which you want to iterate over, the easy-peasy way is:

while (!list.isEmpty()){
   Object obj = list.get(0);

   // do whatever you need to
   // possibly list.add(new Object obj1);

   list.remove(0);
}

So, you iterate through a list, always taking the first element and then removing it. This way you can append new elements to the list while iterating.

You could use a do-while(false):

    <?php
    do if ($foo)
    {
      // Do something first...

      // Shall we continue with this block, or exit now?
      if ($abort_if_block) break;

      // Continue doing something...

    } while (false);
    ?>

as described in http://php.net/manual/en/control-structures.if.php#90073

I have solved similar problem by attaching with debugger to application init. Just start webserver (for example, access localhost), attach to w3wp and see, if app initialization finished correctly. In my case there was exception, and controllers was not registered.

we can use

 element[role="ourRole"] {
    requried style !important; /*for overriding the old css styles */
    }

After some search, I've found a cleaner solution wich use the % operator.

In your YAML file :

key : 'This is the foobar var : %{foobar}'

In your ruby code :

require 'yaml'

file = YAML.load_file('your_file.yml')

foobar = 'Hello World !'
content = file['key']
modified_content = content % { :foobar => foobar }

puts modified_content

And the output is :

This is the foobar var : Hello World !

As @jschorr said in the comment, you can also add multiple variable to the value in the Yaml file :

Yaml :

key : 'The foo var is %{foo} and the bar var is %{bar} !'

Ruby :

# ...
foo = 'FOO'
bar = 'BAR'
# ...
modified_content = content % { :foo => foo, :bar => bar }

Output :

The foo var is FOO and the bar var is BAR !

Oct. 2008:

I would recommend to cache it in a static variable:

public static final class OsUtils
{
   private static String OS = null;
   public static String getOsName()
   {
      if(OS == null) { OS = System.getProperty("os.name"); }
      return OS;
   }
   public static boolean isWindows()
   {
      return getOsName().startsWith("Windows");
   }

   public static boolean isUnix() // and so on
}

That way, every time you ask for the Os, you do not fetch the property more than once in the lifetime of your application.

February 2016: 7+ years later:

There is a bug with Windows 10 (which did not exist at the time of the original answer).
See "Java's “os.name” for Windows 10?"

I have found that this works:

$(document).ready(function(){
    $('textarea').bind('input propertychange', function() {
        //do your update here
    }

})

Kenny is right, just want to clear some things out.

1. Create the file border.xml and put it in the folder res/drawable/

2. add the code

   <shape xmlns:android="http://schemas.android.com/apk/res/android"> 
      <stroke android:width="4dp" android:color="#FF00FF00" /> 
      <solid android:color="#ffffff" /> 
      <padding android:left="7dp" android:top="7dp" 
           android:right="7dp" android:bottom="0dp" /> 
      <corners android:radius="4dp" /> 
   </shape>
   

3. set back ground like android:background="@drawable/border" wherever you want the border

Mine first didn't work cause i put the border.xml in the wrong folder!

It depends on which version of Oracle? Older versions require exp (export), newer versions use expdp (data pump); exp was deprecated but still works most of the time.

Before starting, note that Data Pump exports to the server-side Oracle "directory", which is an Oracle symbolic location mapped in the database to a physical location. There may be a default directory (DATA_PUMP_DIR), check by querying DBA_DIRECTORIES:

  SQL> select * from dba_directories;

... and if not, create one

  SQL> create directory DATA_PUMP_DIR as '/oracle/dumps';
  SQL> grant all on directory DATA_PUMP_DIR to myuser;    -- DBAs dont need this grant

Assuming you can connect as the SYSTEM user, or another DBA, you can export any schema like so, to the default directory:

 $ expdp system/manager schemas=user1 dumpfile=user1.dpdmp

Or specifying a specific directory, add directory=<directory name>:

 C:\> expdp system/manager schemas=user1 dumpfile=user1.dpdmp directory=DUMPDIR

With older export utility, you can export to your working directory, and even on a client machine that is remote from the server, using:

 $ exp system/manager owner=user1 file=user1.dmp

Make sure the export is done in the correct charset. If you haven't setup your environment, the Oracle client charset may not match the DB charset, and Oracle will do charset conversion, which may not be what you want. You'll see a warning, if so, then you'll want to repeat the export after setting NLS_LANG environment variable so the client charset matches the database charset. This will cause Oracle to skip charset conversion.

Example for American UTF8 (UNIX):

 $ export NLS_LANG=AMERICAN_AMERICA.AL32UTF8

Windows uses SET, example using Japanese UTF8:

 C:\> set NLS_LANG=Japanese_Japan.AL32UTF8

More info on Data Pump here: http://docs.oracle.com/cd/B28359_01/server.111/b28319/dp_export.htm#g1022624

Any best practices here?

Use the Maven advanced reactor options, more specifically:

-pl, --projects
        Build specified reactor projects instead of all projects
-am, --also-make
        If project list is specified, also build projects required by the list

So just cd into the parent P directory and run:

mvn install -pl B -am

And this will build B and the modules required by B.

Note that you need to use a colon if you are referencing an artifactId which differs from the directory name:

mvn install -pl :B -am

As described here: https://stackoverflow.com/a/26439938/480894

Unrelated, I'm sure, but do wrap your IDisposable objects in using blocks to ensure proper disposal:

using System;
using System.Net;
using System.IO;

namespace ConsoleProgram
{
    public class Class1
    {
        private const string URL = "https://sub.domain.com/objects.json?api_key=123";
        private const string DATA = @"{""object"":{""name"":""Name""}}";

        static void Main(string[] args)
        {
            Class1.CreateObject();
        }

        private static void CreateObject()
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);
            request.Method = "POST";
            request.ContentType = "application/json";
            request.ContentLength = DATA.Length;
            using (Stream webStream = request.GetRequestStream())
            using (StreamWriter requestWriter = new StreamWriter(webStream, System.Text.Encoding.ASCII))
            {
                requestWriter.Write(DATA);
            }

            try
            {
                WebResponse webResponse = request.GetResponse();
                using (Stream webStream = webResponse.GetResponseStream() ?? Stream.Null)
                using (StreamReader responseReader = new StreamReader(webStream))
                {
                    string response = responseReader.ReadToEnd();
                    Console.Out.WriteLine(response);
                }
            }
            catch (Exception e)
            {
                Console.Out.WriteLine("-----------------");
                Console.Out.WriteLine(e.Message);
            }
        }
    }
}

For bar graphs, you can include the angle which you finally want the ticks to have.

Here I am using rot=0 to make them parallel to the x axis.

series.plot.bar(rot=0)
plt.show()
plt.close()

Here is the code that will return all video ids under your channel

<?php 
    $baseUrl = 'https://www.googleapis.com/youtube/v3/';
    // https://developers.google.com/youtube/v3/getting-started
    $apiKey = 'API_KEY';
    // If you don't know the channel ID see below
    $channelId = 'CHANNEL_ID';

    $params = [
        'id'=> $channelId,
        'part'=> 'contentDetails',
        'key'=> $apiKey
    ];
    $url = $baseUrl . 'channels?' . http_build_query($params);
    $json = json_decode(file_get_contents($url), true);

    $playlist = $json['items'][0]['contentDetails']['relatedPlaylists']['uploads'];

    $params = [
        'part'=> 'snippet',
        'playlistId' => $playlist,
        'maxResults'=> '50',
        'key'=> $apiKey
    ];
    $url = $baseUrl . 'playlistItems?' . http_build_query($params);
    $json = json_decode(file_get_contents($url), true);

    $videos = [];
    foreach($json['items'] as $video)
        $videos[] = $video['snippet']['resourceId']['videoId'];

    while(isset($json['nextPageToken'])){
        $nextUrl = $url . '&pageToken=' . $json['nextPageToken'];
        $json = json_decode(file_get_contents($nextUrl), true);
        foreach($json['items'] as $video)
            $videos[] = $video['snippet']['resourceId']['videoId'];
    }
    print_r($videos);

Note: You can get channel id at https://www.youtube.com/account_advanced after logged in.

Using the .not() method with selecting an entire element is also an option.

This way could be usefull if you want to do another action with that element directly.

$(".thisClass").not($("#thisId")[0].doAnotherAction()).doAction();

You need to intent your current context to another activity first with startActivity. After that you can finish your current activity from where you redirect.

 Intent intent = new Intent(this, FirstActivity.class);// New activity
 intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
 startActivity(intent);
 finish(); // Call once you redirect to another activity

intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP) - Clears the activity stack. If you don't want to clear the activity stack. PLease don't use that flag then.

I had a similar issue. The root cause was that the sending IP was not in the range of white-listed IPs on the receiving server. So, all requests for communication were killed by the receiving site.

Use Math.round(value) then after type cast it to integer.

float a = 8.61f;
int b = (int)Math.round(a);

Datanewolf's code is ALMOST right. I had to reverse both the winding and the normals to make it work properly with the fixed pipeline. The below works correctly with cull on or off for me:

std::vector<GLfloat> vertices;
std::vector<GLfloat> normals;
std::vector<GLfloat> texcoords;
std::vector<GLushort> indices;

float const R = 1./(float)(rings-1);
float const S = 1./(float)(sectors-1);
int r, s;

vertices.resize(rings * sectors * 3);
normals.resize(rings * sectors * 3);
texcoords.resize(rings * sectors * 2);
std::vector<GLfloat>::iterator v = vertices.begin();
std::vector<GLfloat>::iterator n = normals.begin();
std::vector<GLfloat>::iterator t = texcoords.begin();
for(r = 0; r < rings; r++) for(s = 0; s < sectors; s++) {
    float const y = sin( -M_PI_2 + M_PI * r * R );
    float const x = cos(2*M_PI * s * S) * sin( M_PI * r * R );
    float const z = sin(2*M_PI * s * S) * sin( M_PI * r * R );

    *t++ = s*S;
    *t++ = r*R;

    *v++ = x * radius;
    *v++ = y * radius;
    *v++ = z * radius;

    *n++ = -x;
    *n++ = -y;
    *n++ = -z;
}

indices.resize(rings * sectors * 4);
std::vector<GLushort>::iterator i = indices.begin();
for(r = 0; r < rings-1; r++)
    for(s = 0; s < sectors-1; s++) {
       /* 
        *i++ = r * sectors + s;
        *i++ = r * sectors + (s+1);
        *i++ = (r+1) * sectors + (s+1);
        *i++ = (r+1) * sectors + s;
        */
         *i++ = (r+1) * sectors + s;
         *i++ = (r+1) * sectors + (s+1);
        *i++ = r * sectors + (s+1);
         *i++ = r * sectors + s;

}

Edit: There was a question on how to draw this... in my code I encapsulate these values in a G3DModel class. This is my code to setup the frame, draw the model, and end it:

void GraphicsProvider3DPriv::BeginFrame()const{
        int win_width;
        int win_height;// framework of choice here
        glfwGetWindowSize(window, &win_width, &win_height); // retrieve window
        float const win_aspect = (float)win_width / (float)win_height;
        // set lighting
        glEnable(GL_LIGHTING);
        glEnable(GL_LIGHT0);
        glEnable(GL_DEPTH_TEST);
        GLfloat lightpos[] = {0, 0.0, 0, 0.};
        glLightfv(GL_LIGHT0, GL_POSITION, lightpos);
        GLfloat lmodel_ambient[] = { 0.2, 0.2, 0.2, 1.0 };
        glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
        glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
        // set up world transform
        glClearColor(0.f, 0.f, 0.f, 1.f);
        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT|GL_STENCIL_BUFFER_BIT|GL_ACCUM_BUFFER_BIT);
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();

        gluPerspective(45, win_aspect, 1, 10);

        glMatrixMode(GL_MODELVIEW);

    }


    void GraphicsProvider3DPriv::DrawModel(const G3DModel* model, const Transform3D transform)const{
        G3DModelPriv* privModel = (G3DModelPriv *)model;
        glPushMatrix();
        glLoadMatrixf(transform.GetOGLData());

        glEnableClientState(GL_VERTEX_ARRAY);
        glEnableClientState(GL_NORMAL_ARRAY);
        glEnableClientState(GL_TEXTURE_COORD_ARRAY);

        glVertexPointer(3, GL_FLOAT, 0, &privModel->vertices[0]);
        glNormalPointer(GL_FLOAT, 0, &privModel->normals[0]);
        glTexCoordPointer(2, GL_FLOAT, 0, &privModel->texcoords[0]);

        glEnable(GL_TEXTURE_2D);
        //glFrontFace(GL_CCW);
        glEnable(GL_CULL_FACE);
        glActiveTexture(GL_TEXTURE0);
        glBindTexture(GL_TEXTURE_2D, privModel->texname);

        glDrawElements(GL_QUADS, privModel->indices.size(), GL_UNSIGNED_SHORT, &privModel->indices[0]);
        glPopMatrix();
        glDisable(GL_TEXTURE_2D);

    }

    void GraphicsProvider3DPriv::EndFrame()const{
        /* Swap front and back buffers */
        glDisable(GL_LIGHTING);
        glDisable(GL_LIGHT0);
        glDisable(GL_CULL_FACE);
        glfwSwapBuffers(window);

        /* Poll for and process events */
        glfwPollEvents();
    }

In addition @Fredrik Mörk's great answer on strings, to add localization to a form do the following:

• Set the form's property "Localizable" to true
• Change the form's Language property to the language you want (from a nice drop-down with them all in)
• Translate the controls in that form and move them about if need be (squash those really long full French sentences in!)

Edit: This MSDN article on Localizing Windows Forms is not the original one I linked ... but might shed more light if needed. (the old one has been taken away)

You will then get another warning: “Your PHP parameter session.gc_maxlifetime is lower that cookie validity configured in phpMyAdmin, because of this, your login will expire sooner than configured in phpMyAdmin.“. That makes sense because php’s session will time out first anyways. So we will need to change /etc/php.ini .

session.gc_maxlifetime = 43200
That’s 12 hours in seconds. 

Restart your apache server and you are done!

source: http://birdchan.com/home/2011/06/06/phpmyadmin-timeout-after-1440-seconds/

this works for me! :)

You should avoid hardcoding SQL statements in your application. If you don't use ADO nor EntityFramework, I would suggest you to ad a stored procedure to the database and call it from your c# application. A sample code can be found here: How to execute a stored procedure within C# program and here http://msdn.microsoft.com/en-us/library/ms171921%28v=vs.80%29.aspx.

You can do it with reduce:

a = [[1, 2, 3], [4, 5, 6], [7, 8, 9], [], [1, 2]]
print(reduce(lambda count, l: count + len(l), a, 0))
# result is 11

best way will be to save it in a text file with csv extension:

Sub ExportToCSV()
Dim i, j As Integer
Dim Name  As String

Dim pathfile As String

Dim fs As Object
    Dim stream As Object

    Set fs = CreateObject("Scripting.FileSystemObject")
On Error GoTo fileexists

i = 15
Name = Format(Now(), "ddmmyyHHmmss")
pathfile = "D:\1\" & Name & ".csv"

Set stream = fs.CreateTextFile(pathfile, False, True)

fileexists:

If Err.Number = 58 Then
    MsgBox "File already Exists"
    'Your code here
    Return
End If
On Error GoTo 0

j = 1
Do Until IsEmpty(ThisWorkbook.ActiveSheet.Cells(i, 1).Value)

    stream.WriteLine (ThisWorkbook.Worksheets(1).Cells(i, 1).Value & ";" & Replace(ThisWorkbook.Worksheets(1).Cells(i, 6).Value, ".", ","))

    j = j + 1
    i = i + 1
Loop


stream.Close

End Sub

With React hook - useRef

const MyComponent = ({myRef}) => {
  const handleClick = () => alert('hello world')
  myRef.current.handleClick = handleClick
  return (<button onClick={handleClick}>Original Button</button>)
}

MyComponent.defaultProps = {
  myRef: {current: {}}
}

const MyParentComponent = () => {
  const myRef = React.useRef({})
  return (
    <>
      <MyComponent 
        myRef={myRef}
      />
      <button onClick={myRef.current.handleClick}>
        Additional Button
      </button>
    </>
  )
}

Good Luck...

For files changed between a given SHA and your current commit:

git diff --name-only <starting SHA> HEAD

or if you want to include changed-but-not-yet-committed files:

git diff --name-only <starting SHA>

More generally, the following syntax will always tell you which files changed between two commits (specified by their SHAs or other names):

git diff --name-only <commit1> <commit2>

I just started using STS Eclipse with first time using Maven. The project I setup already had its own settings.xml. If this is the case, you'll want to update your settings.xml file in run configuration.

1. right click the pom.xml and "Run As" -> "Run Configurations..."

2. where it says "User settings" click on the File button and add the settings.xml.

3. I think this is specific to your project but my "Goals" is set to "clean install" and I checked on "Skip Tests."

I think the cool thing about using a dynamic language like Python is you really shouldn't have to check something like that.

I would just call the required methods on your object and catch an AttributeError. Later on this will allow you to call your methods with other (seemingly unrelated) objects to accomplish different tasks, such as mocking an object for testing.

I've used this a lot when getting data off the web with urllib2.urlopen() which returns a file like object. This can in turn can be passed to almost any method that reads from a file, because it implements the same read() method as a real file.

But I'm sure there is a time and place for using isinstance(), otherwise it probably wouldn't be there :)

Although this is an old document, but it helped me resolve the problem of 'HintPath' being ignored on another machine. It was because the referenced DLL needed to be in source control as well:

https://msdn.microsoft.com/en-us/library/ee817675.aspx#tdlg_ch4_includeoutersystemassemblieswithprojects

Excerpt:

To include and then reference an outer-system assembly
1. In Solution Explorer, right-click the project that needs to reference the assembly,,and then click Add Existing Item.
2. Browse to the assembly, and then click OK. The assembly is then copied into the project folder and automatically added to VSS (assuming the project is already under source control).
3. Use the Browse button in the Add Reference dialog box to set a file reference to assembly in the project folder.

In case folks are interested in the double version (note this breaks down if passed MAX_VALUE or MIN_VALUE):

private static final Random generator = new Random();
public static double random(double min, double max) {
    return min + (generator.nextDouble() * (max - min));
 }

You can use SELECT as lambacck said or add parentheses:

SET @times = (SELECT COUNT(DidWin)as "I Win"
FROM thetable
WHERE DidWin = 1 AND Playername='Me');

Try the steps described here: http://avaminzhang.wordpress.com/2011/11/24/python-version-2-7-required-which-was-not-found-in-the-registry/

From the accepted answer, it looks like your desired behaviour is to turn

skip 0
skip 1
skip 2
skip 3
"2012-06-23 03:09:13.23",4323584,-1.911224,-0.4657288,-0.1166382,-0.24823,0.256485,"NAN",-0.3489428,-0.130449,-0.2440527,-0.2942413,0.04944348,0.4337797,-1.105218,-1.201882,-0.5962594,-0.586636

into

2012,06,23,03,09,13.23,4323584,-1.911224,-0.4657288,-0.1166382,-0.24823,0.256485,NAN,-0.3489428,-0.130449,-0.2440527,-0.2942413,0.04944348,0.4337797,-1.105218,-1.201882,-0.5962594,-0.586636

If that's right, then I think something like

import csv

with open("test.dat", "rb") as infile, open("test.csv", "wb") as outfile:
    reader = csv.reader(infile)
    writer = csv.writer(outfile, quoting=False)
    for i, line in enumerate(reader):
        if i < 4: continue
        date = line[0].split()
        day = date[0].split('-')
        time = date[1].split(':')
        newline = day + time + line[1:]
        writer.writerow(newline)

would be a little simpler than the reps stuff.

Your printf needs a format string:

printf("%d\n", x);

This reference page gives details on how to use printf and related functions.

Have you tried using the wmic commands?

Try wmic os get version

This will give you the version number in a command line, then you just need to integrate into the batch file.

I've created a video tutorial for this. Just check:

Connect to Amazon EC2 file directory using FileZilla and SFTP, Video Tutorial

Summary of above video tutorial:

1. Edit (Preferences) > Settings > Connection > SFTP, Click "Add key file”
2. Browse to the location of your .pem file and select it.
3. A message box will appear asking your permission to convert the file into ppk format. Click Yes, then give the file a name and store it somewhere.
4. If the new file is shown in the list of Keyfiles, then continue to the next step. If not, then click "Add keyfile..." and select the converted file.

5. File > Site Manager Add a new site with the following parameters:

   Host: Your public DNS name of your EC2 instance, or the public IP address of the server.

   Protocol: SFTP

   Logon Type: Normal

   User: From the docs: "For Amazon Linux, the default user name is ec2-user. For RHEL5, the user name is often root but might be ec2-user. For Ubuntu, the user name is ubuntu. For SUSE Linux, the user name is root. For Debian, the user name is admin. Otherwise, check with your AMI provider."

   Press Connect Button - If saving of passwords has been disabled, you will be prompted that the logon type will be changed to 'Ask for password'. Say 'OK' and when connecting, at the password prompt push 'OK' without entering a password to proceed past the dialog.

   Note: FileZilla automatically figures out which key to use. You do not need to specify the key after importing it as described above.

If you use Cyberduck follow this.

Check this post if you have any permission issues.

driver.find_element_by_id("some_id").size() is class method.

What we need is :

driver.find_element_by_id("some_id").size which is dictionary so :

if driver.find_element_by_id("some_id").size['width'] != 0 : print 'button exist'

The compiler declares the variable in a way that makes it highly prone to an error that is often difficult to find and debug, while producing no perceivable benefits.

Your criticism is entirely justified.

I discuss this problem in detail here:

Closing over the loop variable considered harmful

Is there something you can do with foreach loops this way that you couldn't if they were compiled with an inner-scoped variable? or is this just an arbitrary choice that was made before anonymous methods and lambda expressions were available or common, and which hasn't been revised since then?

The latter. The C# 1.0 specification actually did not say whether the loop variable was inside or outside the loop body, as it made no observable difference. When closure semantics were introduced in C# 2.0, the choice was made to put the loop variable outside the loop, consistent with the "for" loop.

I think it is fair to say that all regret that decision. This is one of the worst "gotchas" in C#, and we are going to take the breaking change to fix it. In C# 5 the foreach loop variable will be logically inside the body of the loop, and therefore closures will get a fresh copy every time.

The for loop will not be changed, and the change will not be "back ported" to previous versions of C#. You should therefore continue to be careful when using this idiom.

Here's one that is pure css that uses the + next sibling selector, :hover, and pointer-events. It doesn't use an imagemap, technically, but the rect concept totally carries over:

.hotspot {_x000D_
    position: absolute;_x000D_
    border: 1px solid blue;_x000D_
}_x000D_
.hotspot + * {_x000D_
    pointer-events: none;_x000D_
    opacity: 0;_x000D_
}_x000D_
.hotspot:hover + * {_x000D_
    opacity: 1.0;_x000D_
}_x000D_
.wash {_x000D_
    position: absolute;_x000D_
    top: 0;_x000D_
    left: 0;_x000D_
    bottom: 0;_x000D_
    right: 0;_x000D_
    background-color: rgba(255, 255, 255, 0.6);_x000D_
}

<div style="position: relative; height: 188px; width: 300px;">_x000D_
    <img src="http://demo.cloudimg.io/s/width/300/sample.li/boat.jpg">_x000D_
        _x000D_
    <div class="hotspot" style="top: 50px; left: 50px; height: 30px; width: 30px;"></div>_x000D_
    <div>_x000D_
        <div class="wash"></div>_x000D_
        <div style="position: absolute; top: 0; left: 0;">A</div>_x000D_
    </div>_x000D_
        _x000D_
    <div class="hotspot" style="top: 100px; left: 120px; height: 30px; width: 30px;"></div>_x000D_
    <div>_x000D_
        <div class="wash"></div>_x000D_
        <div style="position: absolute; top: 0; left: 0;">B</div>_x000D_
    </div>_x000D_
</div>

From dialog to activity that you want to refresh. If it not first activity!
Like this:mainActivity>>objectActivity>>dialog
In your dialog class:

  @Override
public void dismiss() {
    super.dismiss();
   getActivity().finish();
    Intent i = new Intent(getActivity(), objectActivity.class);  //your class
    startActivity(i);

}

The suggested answer only works for certain versions of ruby. Some commenters suggest using ruby-dev; that didn't work for me either.

sudo apt-get install ruby-all-dev

worked for me.

It sounds like your expectation is that the style be applied dynamically to the width of the textbox based on the contents of the textbox. If so you will need some js to run on textbox contents changing, something like this:

<input id="txt" type="text" onkeypress="this.style.width = ((this.value.length + 1) * 8) + 'px';">

Note: this solution only works when every character is exactly 8px wide.

Mesos and Kubernetes both are container orchestration tools.

When you say "Google Kubernetes"?

Google Kubernetes Engine provides a managed environment for deploying, managing, and scaling your containerized applications using Google infrastructure.

Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications.” Kubernetes was built by Google based on their experience running containers in production over the last decade.

The major components in a Kubernetes cluster are:

pods — a way to group containers together replication controllers — a way to handle the lifecycle of containers labels — a way to find and query containers, and services — a set of containers performing a common function

Mesos is an open-source cluster management project by Apache, designed to scale to very large clusters, from hundreds to thousands of hosts. Mesos supports diverse kinds of workloads such as Hadoop tasks, cloud native applications etc. It gives you the ability to run both containerized, and non-containerized workloads in a distributed manner.

It was initially written as a research project at Berkeley and was later adopted by Twitter as an answer to Google’s Borg (Kubernetes’ predecessor). To combat its high degree of complexity (Mesos is super complicated and hard to manage!), Mesosphere came into the picture to try and make Mesos into something regular human beings can use.

Mesosphere supplied the superb Marathon “plugin” to Mesos, which provides users with an easy way to manage container orchestration over Mesos.

In mid-2016, DC/OS (Data Center Operating System) — an open source project backed by Mesosphere — was introduced, which simplifies Mesos even further and allows you to deploy your own Mesos cluster, with Marathon, in a matter of minutes.

Now, if we compare kubernetes and Mesos(DC/OS)

kubernetes is a cluster manager for containers while mesos is a distributed system kernel that will make your cluster look like one giant computer system to all supported frameworks and apps that are built to be run on mesos.

Mesos was born for a world where you own a lot of physical resources to create a big static computing cluster. The great thing about it is that lots of modern scalable data processing application runs very well on Mesos (Hadoop, Kafka, Spark) and it is nice because you can run them all on the same basic resource pool, along with your new age container packaged apps.

Mesos cluster also runs alongside the Marathon cluster. Marathon, created by Mesosphere, is designed to start, monitor and scale long-running applications, including cloud native apps. Clients interact with Marathon through a REST API.

Also, a point to be noted is that you can actually run Kubernetes on top of DC/OS and schedule containers with it instead of using Marathon. This implies the biggest difference of all — DC/OS, as it name suggests, is more similar to an operating system rather than an orchestration framework. You can run non-containerized, stateful workloads on it. Container scheduling is handled by the Marathon.

Today there are four font container formats in use on the web: EOT, TTF, WOFF,andWOFF2.

Unfortunately, despite the wide range of choices, there isn't a single universal format that works across all old and new browsers:

• EOT is IE only,
• TTF has partial IE support,
• WOFF enjoys the widest support but is not available in some older browsers
• WOFF 2.0 support is a work in progress for many browsers.

If you want your web app to have the same font across all browsers then you might want to provide all 4 font type in CSS

 @font-face {
      font-family: 'besom'; !important
      src: url('fonts/besom/besom.eot');
      src: url('fonts/besom/besom.eot?#iefix') format('embedded-opentype'),
           url('fonts/besom/besom.woff2') format('woff2'),
           url('fonts/besom/besom.woff') format('woff'),
           url('fonts/besom/besom.ttf') format('truetype'),
           url('fonts/besom/besom.svg#besom_2regular') format('svg');
      font-weight: normal;
      font-style: normal;
  }

It is absolutely possible to do any merge, even non-fast forward merges, without git checkout. The worktree answer by @grego is a good hint. To expand on that:

cd local_repo
git worktree add _master_wt master
cd _master_wt
git pull origin master:master
git merge --no-ff -m "merging workbranch" my_work_branch
cd ..
git worktree remove _master_wt

You have now merged the local work branch to the local master branch without switching your checkout.

Select select = new Select(_element);
List<WebElement> selectedOptions = select.getAllSelectedOptions();

if(selectedOptions.size() > 0){
    return true;
}else{
    return false;
}

Note: This solution works well on Ubuntu 16.04, Ubuntu 17.04 and Ubuntu 18.04.

Try to remove the existing cmdtest and yarn (which is the module of legacy black box command line tool of *nix systems) :

sudo apt remove cmdtest
sudo apt remove yarn

Install it simple via npm

npm install -g yarn

OR

sudo npm install -g yarn

Now yarn is installed. Run your command.

yarn install sylius

I hope this will work. Cheers!

Edit:

Do remember to re-open the terminal for changes to take effect.

you should make a css class .my_style then use .addClass('.mystyle')

Look at DATEADD

SELECT DATEADD(mm, 1, OrderDate)AS TimeFrame

Here's the MSDN

In your case

...WHERE reference_dt = DATEADD(MM,1, myColDate)

Make sure you switch to default content before switching to frame:

driver.switchTo().defaultContent();
driver.switchTo().frame(x);

x can be the frame number or you can do a driver.findlement and use any of the options you have available eg: driver.findElementByName("Name").

How about:

Dir["/path/to/directory/*.rb"].each {|file| require file }

This one-liner works, for all types of objects, as long as they are in globals() dict, which they should be:

def name_of_global_obj(xx):
    return [objname for objname, oid in globals().items()
            if id(oid)==id(xx)][0]

or, equivalently:

def name_of_global_obj(xx):
    for objname, oid in globals().items():
        if oid is xx:
            return objname

After testing with precise instructions (using python2 or python3 instead of just "python") I've constated that no matter what the tutorial says, this works ONLY with python3.

Due to having some downtime at work, I decided to test the speeds of the different methods posted here.

These are the four methods I used.

static void Print1(string[] toPrint)
{
    foreach(string s in toPrint)
    {
        Console.Write(s);
    }
}

static void Print2(string[] toPrint)
{
    toPrint.ToList().ForEach(Console.Write);
}

static void Print3(string[] toPrint)
{
    Console.WriteLine(string.Join("", toPrint));
}

static void Print4(string[] toPrint)
{
    Array.ForEach(toPrint, Console.Write);
}

The results are as follows:

 Strings per trial: 10000
 Number of Trials: 100
 Total Time Taken to complete: 00:01:20.5004836
 Print1 Average: 484.37ms
 Print2 Average: 246.29ms
 Print3 Average: 70.57ms
 Print4 Average: 233.81ms

So Print3 is the fastest, because it only has one call to the Console.WriteLine which seems to be the main bottleneck for the speed of printing out an array. Print4 is slightly faster than Print2 and Print1 is the slowest of them all.

I think that Print4 is probably the most versatile of the 4 I tested, even though Print3 is faster.

If I made any errors, feel free to let me know / fix them on your own!

EDIT: I'm adding the generated IL below

g__Print10_0://Print1
IL_0000:  ldarg.0     
IL_0001:  stloc.0     
IL_0002:  ldc.i4.0    
IL_0003:  stloc.1     
IL_0004:  br.s        IL_0012
IL_0006:  ldloc.0     
IL_0007:  ldloc.1     
IL_0008:  ldelem.ref  
IL_0009:  call        System.Console.Write
IL_000E:  ldloc.1     
IL_000F:  ldc.i4.1    
IL_0010:  add         
IL_0011:  stloc.1     
IL_0012:  ldloc.1     
IL_0013:  ldloc.0     
IL_0014:  ldlen       
IL_0015:  conv.i4     
IL_0016:  blt.s       IL_0006
IL_0018:  ret         

g__Print20_1://Print2
IL_0000:  ldarg.0     
IL_0001:  call        System.Linq.Enumerable.ToList<String>
IL_0006:  ldnull      
IL_0007:  ldftn       System.Console.Write
IL_000D:  newobj      System.Action<System.String>..ctor
IL_0012:  callvirt    System.Collections.Generic.List<System.String>.ForEach
IL_0017:  ret         

g__Print30_2://Print3
IL_0000:  ldstr       ""
IL_0005:  ldarg.0     
IL_0006:  call        System.String.Join
IL_000B:  call        System.Console.WriteLine
IL_0010:  ret         

g__Print40_3://Print4
IL_0000:  ldarg.0     
IL_0001:  ldnull      
IL_0002:  ldftn       System.Console.Write
IL_0008:  newobj      System.Action<System.String>..ctor
IL_000D:  call        System.Array.ForEach<String>
IL_0012:  ret   

You can do what you want if you use an iterator object to go over the elements in your set. You can remove them on the go an it's ok. However removing them while in a for loop (either "standard", of the for each kind) will get you in trouble:

Set<Integer> set = new TreeSet<Integer>();
    set.add(1);
    set.add(2);
    set.add(3);

    //good way:
    Iterator<Integer> iterator = set.iterator();
    while(iterator.hasNext()) {
        Integer setElement = iterator.next();
        if(setElement==2) {
            iterator.remove();
        }
    }

    //bad way:
    for(Integer setElement:set) {
        if(setElement==2) {
            //might work or might throw exception, Java calls it indefined behaviour:
            set.remove(setElement);
        } 
    }

As per @mrgloom's comment, here are more details as to why the "bad" way described above is, well... bad :

Without getting into too much details about how Java implements this, at a high level, we can say that the "bad" way is bad because it is clearly stipulated as such in the Java docs:

https://docs.oracle.com/javase/8/docs/api/java/util/ConcurrentModificationException.html

stipulate, amongst others, that (emphasis mine):

"For example, it is not generally permissible for one thread to modify a Collection while another thread is iterating over it. In general, the results of the iteration are undefined under these circumstances. Some Iterator implementations (including those of all the general purpose collection implementations provided by the JRE) may choose to throw this exception if this behavior is detected" (...)

"Note that this exception does not always indicate that an object has been concurrently modified by a different thread. If a single thread issues a sequence of method invocations that violates the contract of an object, the object may throw this exception. For example, if a thread modifies a collection directly while it is iterating over the collection with a fail-fast iterator, the iterator will throw this exception."

To go more into details: an object that can be used in a forEach loop needs to implement the "java.lang.Iterable" interface (javadoc here). This produces an Iterator (via the "Iterator" method found in this interface), which is instantiated on demand, and will contain internally a reference to the Iterable object from which it was created. However, when an Iterable object is used in a forEach loop, the instance of this iterator is hidden to the user (you cannot access it yourself in any way).

This, coupled with the fact that an Iterator is pretty stateful, i.e. in order to do its magic and have coherent responses for its "next" and "hasNext" methods it needs that the backing object is not changed by something else than the iterator itself while it's iterating, makes it so that it will throw an exception as soon as it detects that something changed in the backing object while it is iterating over it.

Java calls this "fail-fast" iteration: i.e. there are some actions, usually those that modify an Iterable instance (while an Iterator is iterating over it). The "fail" part of the "fail-fast" notion refers to the ability of an Iterator to detect when such "fail" actions happen. The "fast" part of the "fail-fast" (and, which in my opinion should be called "best-effort-fast"), will terminate the iteration via ConcurrentModificationException as soon as it can detect that a "fail" action has happen.

Having tested this using Python 3.5 and pip 7.1.2 on Linux, the situation appears to be this:

• pip install --user somepackage installs to $HOME/.local, and uninstalling it does work using pip uninstall somepackage.

• This is true whether or not somepackage is also installed system-wide at the same time.

• If the package is installed at both places, only the local one will be uninstalled. To uninstall the package system-wide using pip, first uninstall it locally, then run the same uninstall command again, with root privileges.

• In addition to the predefined user install directory, pip install --target somedir somepackage will install the package into somedir. There is no way to uninstall a package from such a place using pip. (But there is a somewhat old unmerged pull request on Github that implements pip uninstall --target.)

• Since the only places pip will ever uninstall from are system-wide and predefined user-local, you need to run pip uninstall as the respective user to uninstall from a given user's local install directory.

Use a selector that will select all the rows and take the length.

var rowCount = $('#myTable tr').length;

Note: this approach also counts all trs of every nested table!

const isEmpty = (value) => (
    value === undefined ||
    value === null ||
    (typeof value === 'object' && Object.keys(value).length === 0) ||
    (typeof value === 'string' && value.trim().length === 0)
  )

module.exports = isEmpty;

The above answer doesn't support observable interpolation (and cost me a lot of time trying to debug). The jsFiddle link in @BrandonTilley comment was the answer that worked for me, which I'll re-post here for preservation:

app.directive('backImg', function(){
    return function(scope, element, attrs){
        attrs.$observe('backImg', function(value) {
            element.css({
                'background-image': 'url(' + value +')',
                'background-size' : 'cover'
            });
        });
    };
});

Example using controller and template

Controller :

$scope.someID = ...;
/* 
The advantage of using directive will also work inside an ng-repeat :
someID can be inside an array of ID's 
*/

$scope.arrayOfIDs = [0,1,2,3];

Template :

Use in template like so :

<div back-img="img/service-sliders/{{someID}}/1.jpg"></div>

or like so :

<div ng-repeat="someID in arrayOfIDs" back-img="img/service-sliders/{{someID}}/1.jpg"></div>

Got the "You have to install development tools first." error when trying to install the mysql2 gem after upgrading to Mac OS X Mountain Lion. Apparently doing this upgrade removes the command line compilers.

To fix:

• I uninstalled my very old version of Xcode (ran the uninstall script in /Developer/Library). Then deleted the /Developer directory.
• Went to the AppStore and downloaded Xcode.
• Launched Xcode and went into the Preferences -> Downloads, and installed the command line tools.

If you are on PowerShell, use

rm -Force .git/index.lock

When I started using json, I was confused and unable to figure it out for some time, but finally I got what I wanted
Here is the simple solution

import json
m = {'id': 2, 'name': 'hussain'}
n = json.dumps(m)
o = json.loads(n)
print(o['id'], o['name'])

Code for adding fragment

public Fragment getItem(int position) {

    switch (position){
        case 0:
            return new Fragment1();

        case 1:
            return new Fragment2();

        case 2:
            return new Fragment3();

        case 3:
            return new Fragment4();

        default:
            break;
    }

    return null;
}

Create an xml file for each fragment say for Fragment1, use fragment_one.xml as layout file, use the below code in Fragment1 java file.

public class Fragment1 extends Fragment {

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.fragment_one, container, false);

        return view;

    }
}

Later you can make necessary corrections.. It worked for me.

Very simple:

import json
data = json.loads('{"one" : "1", "two" : "2", "three" : "3"}')
print data['two']

you have following errors which in turn is causing you that exception, let me explain it

this is your existing code:

if(!scan.hasNextInt()) {
        System.out.println("Invalid input!");
        System.out.print("Enter an integer: ");
        usrInput= sc.nextInt();
    }

in the above code if(!scan.hasNextInt()) will become true only when user input contains both characters as well as integers like your input adfd 123.

but you are trying to read only integers inside the if condition using usrInput= sc.nextInt();. Which is incorrect,that's what is throwing Exception in thread "main" java.util.InputMismatchException.

so correct code should be

 if(!scan.hasNextInt()) {
            System.out.println("Invalid input!");
            System.out.print("Enter an integer: ");
            sc.next(); 
            continue;
        }

in the above code sc.next() will help to read new input from user and continue will help in executing same if condition(i.e if(!scan.hasNextInt())) again.

Please use code in my first answer to build your complete logic.let me know if you need any explanation on it.

I was trying to run selenium on Jenkins with Mocha framework using wdio. So following are the steps to solve this issue:-

Install google chrome

sudo apt-get update 

sudo apt-get install google-chrome-stable

Install chrome-driver

wget http://chromedriver.storage.googleapis.com/2.23/chromedriver_linux64.zip
unzip chromedriver_linux64.zip

Run following commands to start selenium web server

nohup sudo Xvfb :10 -ac
export DISPLAY=:10
java -jar vendor/se/selenium-server-standalone/bin/selenium-server-standalone.jar -Dwebdriver.chrome.bin="/usr/bin/google-chrome" -Dwebdriver.chrome.driver="vendor/bin/chromedriver"

After this start you tests with wdio command

wdio wdio.conf.js

A good hash function should

1. be bijective to not loose information, where possible, and have the least collisions
2. cascade as much and as evenly as possible, i.e. each input bit should flip every output bit with probability 0.5 and without obvious patterns.
3. if used in a cryptographic context there should not exist an efficient way to invert it.

A prime number modulus does not satisfy any of these points. It is simply insufficient. It is often better than nothing, but it's not even fast. Multiplying with an unsigned integer and taking a power-of-two modulus distributes the values just as well, that is not well at all, but with only about 2 cpu cycles it is much faster than the 15 to 40 a prime modulus will take (yes integer division really is that slow).

To create a hash function that is fast and distributes the values well the best option is to compose it from fast permutations with lesser qualities like they did with PCG for random number generation.

Useful permutations, among others, are:

• multiplication with an uneven integer
• binary rotations
• xorshift

Following this recipe we can create our own hash function or we take splitmix which is tested and well accepted.

If cryptographic qualities are needed I would highly recommend to use a function of the sha family, which is well tested and standardised, but for educational purposes this is how you would make one:

First you take a good non-cryptographic hash function, then you apply a one-way function like exponentiation on a prime field or k many applications of (n*(n+1)/2) mod 2^k interspersed with an xorshift when k is the number of bits in the resulting hash.

SELECT CONCAT(isnull(`affiliate_name`,''),'-',isnull(`model`,''),'-',isnull(`ip`,''),'-',isnull(`os_type`,''),'-',isnull(`os_version`,'')) AS device_name
FROM devices

You need to make Tomcat listen to 192.168.1.100 address also.

If you want it to listen to all interfaces (IP-s) just remove "address=" from Connector string in your configuration file and restart Tomcat.

Or just use your IP to listen to that address address=192.168.1.100 in the Connector string

Your Maven project doesn't seem to be configured as a Eclipse Java project, that is the Java nature is missing (the little 'J' in the project icon).

To enable this, the <packaging> element in your pom.xml should be jar (or similar).

Then, right-click the project and select Maven > Update Project Configuration

For this to work, you need to have m2eclipse installed. But since you had the _ New ... > New Maven Project_ wizard, I assume you have m2eclipse installed.

In VS2010, right click the project in the Solution Explorer and select 'Add Deployable Dependencies'. Then check the MVC related check boxes in the following dialog.

This creates a '_bin_deployableAssemblies' folder in the project which contains all the .dll files mentioned in other answers. I believe these get copied to the bin folder when creating a deployment package.

There is a much easier way to do without adding the CSS files and all the other methods suggested. But you have to do it every time you start the Jupiter notebook.

Go to inspect in your browser and click on the element selection icon and then click on the box. And at the bottom of the page, you will be seeing the styling option for CSS where you can easily change the font-size.

Add a margin to your li tags. That will create space between the li and you can use line-height to set the spacing to the text within the li tags.

Since mongo-connector now appears dead, my company decided to build a tool for using Mongo change streams to output to Elasticsearch.

Our initial results look promising. You can check it out at https://github.com/electionsexperts/mongo-stream. We're still early in development, and would welcome suggestions or contributions.

<div class="col-md-4 offset-md-4"> 
put your form here
</div>

My answer is in reference to the setting-up of go-lang on Ubuntu linux/amd64.I have faced the same trouble of setting the path of environment variables (GOPATH and GOBIN), losing it on terminal exit and rebuilding it using the source <file_name> every time.The mistake was to put the path (GOPATH and GOBIN) in ~/.bash_profile folder. After wasting a few good hours, I found that the solution was to put GOPATH and GOBIN in ~/.bash_rc file in the manner:

export GOPATH=$HOME/go
export GOBIN=$GOPATH/bin
export PATH=$PATH:$GOPATH:$GOBIN

and doing so, the go installation worked fine and there were no path losses.

EDIT 1: The reason with which this issue can be related is that settings for non-login shells like your ubuntu terminal or gnome-terminal where we run the go code are taken from ~./bash_rc file and the settings for login shells are taken from ~/.bash_profile file, and from ~/.profile file if ~/.bash_profile file is unreachable.

If you're willing to use std::strings, you can use this sample-app's strsub function as-is, or update it if you want it to take a different type or set of parameters to achieve roughly the same goal. Basically, it uses the properties and functionalities of std::string to quickly erase the matching set of characters, and insert the desired characters directly within the std::string. Every time it does this replacement operation, the offset updates if it can still find matching chars to replace, and if it can't due to nothing more to replace, it returns the string in its state from the last update.

#include <iostream>
#include <string>

std::string strsub(std::string stringToModify,
                   std::string charsToReplace,
                   std::string replacementChars);

int main()
{
    std::string silly_typos = "annoiiyyyng syyyllii tiipos.";

    std::cout << "Look at these " << silly_typos << std::endl;
    silly_typos = strsub(silly_typos, "yyy", "i");
    std::cout << "After a little elbow-grease, a few less " << silly_typos << std::endl;
    silly_typos = strsub(silly_typos, "ii", "y");

    std::cout << "There, no more " << silly_typos << std::endl;
    return 0;
}

std::string strsub(std::string stringToModify,
                   std::string charsToReplace,
                   std::string replacementChars)
{
    std::string this_string = stringToModify;

    std::size_t this_occurrence = this_string.find(charsToReplace);
    while (this_occurrence != std::string::npos)
    {
        this_string.erase(this_occurrence, charsToReplace.size());
        this_string.insert(this_occurrence, replacementChars);
        this_occurrence = this_string.find(charsToReplace,
                                           this_occurrence + replacementChars.size());
    }

    return this_string;
}

If you don't want to rely on using std::strings as your parameters so you can pass in C-style strings instead, you can see the updated sample below:

#include <iostream>
#include <string>

std::string strsub(const char * stringToModify,
                   const char * charsToReplace,
                   const char * replacementChars,
                   uint64_t sizeOfCharsToReplace,
                   uint64_t sizeOfReplacementChars);

int main()
{
    std::string silly_typos = "annoiiyyyng syyyllii tiipos.";

    std::cout << "Look at these " << silly_typos << std::endl;
    silly_typos = strsub(silly_typos.c_str(), "yyy", "i", 3, 1);
    std::cout << "After a little elbow-grease, a few less " << silly_typos << std::endl;
    silly_typos = strsub(silly_typos.c_str(), "ii", "y", 2, 1);

    std::cout << "There, no more " << silly_typos << std::endl;
    return 0;
}

std::string strsub(const char * stringToModify,
                   const char * charsToReplace,
                   const char * replacementChars,
                   uint64_t sizeOfCharsToReplace,
                   uint64_t sizeOfReplacementChars)
{
    std::string this_string = stringToModify;

    std::size_t this_occurrence = this_string.find(charsToReplace);
    while (this_occurrence != std::string::npos)
    {
        this_string.erase(this_occurrence, sizeOfCharsToReplace);
        this_string.insert(this_occurrence, replacementChars);
        this_occurrence = this_string.find(charsToReplace,
            this_occurrence + sizeOfReplacementChars);
    }

    return this_string;
}

Exploiting the fact that Number.MAX_VALUE < 171!, we can simply use a complete lookup table consisting of just 171 compact array elements taking up less than 1.4 kilobytes of memory.

A fast lookup function with runtime complexity O(1) and minimal array access overhead would then look as follows:

// Lookup table for n! for 0 <= n <= 170:_x000D_
const factorials = [1,1,2,6,24,120,720,5040,40320,362880,3628800,39916800,479001600,6227020800,87178291200,1307674368e3,20922789888e3,355687428096e3,6402373705728e3,121645100408832e3,243290200817664e4,5109094217170944e4,1.1240007277776077e21,2.585201673888498e22,6.204484017332394e23,1.5511210043330986e25,4.0329146112660565e26,1.0888869450418352e28,3.0488834461171387e29,8.841761993739702e30,2.6525285981219107e32,8.222838654177922e33,2.631308369336935e35,8.683317618811886e36,2.9523279903960416e38,1.0333147966386145e40,3.7199332678990125e41,1.3763753091226346e43,5.230226174666011e44,2.0397882081197444e46,8.159152832478977e47,3.345252661316381e49,1.40500611775288e51,6.041526306337383e52,2.658271574788449e54,1.1962222086548019e56,5.502622159812089e57,2.5862324151116818e59,1.2413915592536073e61,6.082818640342675e62,3.0414093201713376e64,1.5511187532873822e66,8.065817517094388e67,4.2748832840600255e69,2.308436973392414e71,1.2696403353658276e73,7.109985878048635e74,4.0526919504877214e76,2.3505613312828785e78,1.3868311854568984e80,8.32098711274139e81,5.075802138772248e83,3.146997326038794e85,1.98260831540444e87,1.2688693218588417e89,8.247650592082472e90,5.443449390774431e92,3.647111091818868e94,2.4800355424368305e96,1.711224524281413e98,1.1978571669969892e100,8.504785885678623e101,6.1234458376886085e103,4.4701154615126844e105,3.307885441519386e107,2.48091408113954e109,1.8854947016660504e111,1.4518309202828587e113,1.1324281178206297e115,8.946182130782976e116,7.156945704626381e118,5.797126020747368e120,4.753643337012842e122,3.945523969720659e124,3.314240134565353e126,2.81710411438055e128,2.4227095383672734e130,2.107757298379528e132,1.8548264225739844e134,1.650795516090846e136,1.4857159644817615e138,1.352001527678403e140,1.2438414054641308e142,1.1567725070816416e144,1.087366156656743e146,1.032997848823906e148,9.916779348709496e149,9.619275968248212e151,9.426890448883248e153,9.332621544394415e155,9.332621544394415e157,9.42594775983836e159,9.614466715035127e161,9.90290071648618e163,1.0299016745145628e166,1.081396758240291e168,1.1462805637347084e170,1.226520203196138e172,1.324641819451829e174,1.4438595832024937e176,1.588245541522743e178,1.7629525510902446e180,1.974506857221074e182,2.2311927486598138e184,2.5435597334721877e186,2.925093693493016e188,3.393108684451898e190,3.969937160808721e192,4.684525849754291e194,5.574585761207606e196,6.689502913449127e198,8.094298525273444e200,9.875044200833601e202,1.214630436702533e205,1.506141741511141e207,1.882677176888926e209,2.372173242880047e211,3.0126600184576594e213,3.856204823625804e215,4.974504222477287e217,6.466855489220474e219,8.47158069087882e221,1.1182486511960043e224,1.4872707060906857e226,1.9929427461615188e228,2.6904727073180504e230,3.659042881952549e232,5.012888748274992e234,6.917786472619489e236,9.615723196941089e238,1.3462012475717526e241,1.898143759076171e243,2.695364137888163e245,3.854370717180073e247,5.5502938327393044e249,8.047926057471992e251,1.1749972043909107e254,1.727245890454639e256,2.5563239178728654e258,3.80892263763057e260,5.713383956445855e262,8.62720977423324e264,1.3113358856834524e267,2.0063439050956823e269,3.0897696138473508e271,4.789142901463394e273,7.471062926282894e275,1.1729568794264145e278,1.853271869493735e280,2.9467022724950384e282,4.7147236359920616e284,7.590705053947219e286,1.2296942187394494e289,2.0044015765453026e291,3.287218585534296e293,5.423910666131589e295,9.003691705778438e297,1.503616514864999e300,2.5260757449731984e302,4.269068009004705e304,7.257415615307999e306];_x000D_
_x000D_
// Lookup function:_x000D_
function factorial(n) {_x000D_
  return factorials[n] || (n > 170 ? Infinity : NaN);_x000D_
}_x000D_
_x000D_
// Test cases:_x000D_
console.log(factorial(NaN));       // NaN_x000D_
console.log(factorial(-Infinity)); // NaN_x000D_
console.log(factorial(-1));        // NaN_x000D_
console.log(factorial(0));         // 1_x000D_
console.log(factorial(170));       // 7.257415615307999e+306 < Number.MAX_VALUE_x000D_
console.log(factorial(171));       // Infinity > Number.MAX_VALUE_x000D_
console.log(factorial(Infinity));  // Infinity

This is as precise and as fast as it gets using the Number datatype. Computing the lookup table in Javascript - as some other answers suggest - will reduce precision when n! > Number.MAX_SAFE_INTEGER.

Compressing the runtime table via gzip reduces its size on disk from about 3.6 to 1.8 kilobytes.

When one of my VB.NET classes has all shared members I either convert it to a Module with a matching (or otherwise appropriate) namespace or I make the class not inheritable and not constructable:

Public NotInheritable Class MyClass1

   Private Sub New()
      'Contains only shared members.
      'Private constructor means the class cannot be instantiated.
   End Sub

End Class

Use FlexBox CSS

Flexbox is a perfect fit for this type of problem. While mostly known for laying out content in the horizontal direction, Flexbox actually works just as well for vertical layout problems. All you have to do is wrap the vertical sections in a flex container and choose which ones you want to expand. They’ll automatically take up all the available space in their container.

As someone else mentioned, core.sshCommand config can be used to override SSH key and other parameters.

Here is an exmaple where you have an alternate key named ~/.ssh/workrsa and want to use it for all repositories cloned under ~/work.

1. Create a new .gitconfig file under ~/work:

[core]
  sshCommand = "ssh -i ~/.ssh/workrsa"

2. In your global git config ~/.gitconfig, add:

[includeIf "gitdir:~/work/"]
  path = ~/work/.gitconfig

You can do this with a Correlated Subquery (That is a subquery wherein you reference a field in the main query). In this case:

SELECT * 
FROM yourtable t1
WHERE date = (SELECT max(date) from yourtable WHERE id = t1.id)

Here we give the yourtable table an alias of t1 and then use that alias in the subquery grabbing the max(date) from the same table yourtable for that id.

open http://localhost:8080/ in browser, if you get tomcat home page. it means tomcat is running

Lets assume we have the string variables $string, $start, and $limit we can borrow 3 or 4 functions from PHP to achieve this. They are:

• script_tags() PHP function to remove the unnecessary HTML and PHP tags (if there are any). This wont be necessary, if there are no HTML or PHP tags.
• explode() to split the $string into an array
• array_splice() to specify the number of words and where it'll start from. It'll be controlled by vallues assigned to our $start and $limit variables.

• and finally, implode() to join the array elements into your truncated string..

  function truncateString($string, $start, $limit){
      $stripped_string =strip_tags($string); // if there are HTML or PHP tags
      $string_array =explode(' ',$stripped_string);
      $truncated_array = array_splice($string_array,$start,$limit);
      $truncated_string=implode(' ',$truncated_array);
  
      return $truncated_string;
  }
  

It's that simple..

I hope this was helpful.

This test shows three blocks of two blocks together on the same line.

.group {
    display:block;
    box-sizing:border-box;
}
.group>div {
    display:inline-block;
    padding-bottom:4px;
}
.group>div>span,.group>div>div {
    width:200px;
    height:40px;
    text-align: center;
    padding-top:20px;
    padding-bottom:0px;
    display:inline-block;
    border:1px solid black;
    background-color:blue;
    color:white;
}

input[type=text] {
    height:1em;
}

<div class="group">
    <div>
        <span>First Name</span>
        <span><input type="text"/></span>
    </div>
    <div>
        <div>Last Name</div>
        <div><input type="text"/></div>
    </div>
    <div>
        <div>Address</div>
        <div><input type="text"/></div>
    </div>
</div>

from lxml import etree
from bs4 import BeautifulSoup
soup = BeautifulSoup(open('path of your localfile.html'),'html.parser')
dom = etree.HTML(str(soup))
print dom.xpath('//*[@id="BGINP01_S1"]/section/div/font/text()')

Above used the combination of Soup object with lxml and one can extract the value using xpath

I'll interpret your question as two questions: 1) why -> even exists, and 2) why . does not automatically dereference the pointer. Answers to both questions have historical roots.

Why does -> even exist?

In one of the very first versions of C language (which I will refer as CRM for "C Reference Manual", which came with 6th Edition Unix in May 1975), operator -> had very exclusive meaning, not synonymous with * and . combination

The C language described by CRM was very different from the modern C in many respects. In CRM struct members implemented the global concept of byte offset, which could be added to any address value with no type restrictions. I.e. all names of all struct members had independent global meaning (and, therefore, had to be unique). For example you could declare

struct S {
  int a;
  int b;
};

and name a would stand for offset 0, while name b would stand for offset 2 (assuming int type of size 2 and no padding). The language required all members of all structs in the translation unit either have unique names or stand for the same offset value. E.g. in the same translation unit you could additionally declare

struct X {
  int a;
  int x;
};

and that would be OK, since the name a would consistently stand for offset 0. But this additional declaration

struct Y {
  int b;
  int a;
};

would be formally invalid, since it attempted to "redefine" a as offset 2 and b as offset 0.

And this is where the -> operator comes in. Since every struct member name had its own self-sufficient global meaning, the language supported expressions like these

int i = 5;
i->b = 42;  /* Write 42 into `int` at address 7 */
100->a = 0; /* Write 0 into `int` at address 100 */

The first assignment was interpreted by the compiler as "take address 5, add offset 2 to it and assign 42 to the int value at the resultant address". I.e. the above would assign 42 to int value at address 7. Note that this use of -> did not care about the type of the expression on the left-hand side. The left hand side was interpreted as an rvalue numerical address (be it a pointer or an integer).

This sort of trickery was not possible with * and . combination. You could not do

(*i).b = 42;

since *i is already an invalid expression. The * operator, since it is separate from ., imposes more strict type requirements on its operand. To provide a capability to work around this limitation CRM introduced the -> operator, which is independent from the type of the left-hand operand.

As Keith noted in the comments, this difference between -> and *+. combination is what CRM is referring to as "relaxation of the requirement" in 7.1.8: Except for the relaxation of the requirement that E1 be of pointer type, the expression E1->MOS is exactly equivalent to (*E1).MOS

Later, in K&R C many features originally described in CRM were significantly reworked. The idea of "struct member as global offset identifier" was completely removed. And the functionality of -> operator became fully identical to the functionality of * and . combination.

Why can't . dereference the pointer automatically?

Again, in CRM version of the language the left operand of the . operator was required to be an lvalue. That was the only requirement imposed on that operand (and that's what made it different from ->, as explained above). Note that CRM did not require the left operand of . to have a struct type. It just required it to be an lvalue, any lvalue. This means that in CRM version of C you could write code like this

struct S { int a, b; };
struct T { float x, y, z; };

struct T c;
c.b = 55;

In this case the compiler would write 55 into an int value positioned at byte-offset 2 in the continuous memory block known as c, even though type struct T had no field named b. The compiler would not care about the actual type of c at all. All it cared about is that c was an lvalue: some sort of writable memory block.

Now note that if you did this

S *s;
...
s.b = 42;

the code would be considered valid (since s is also an lvalue) and the compiler would simply attempt to write data into the pointer s itself, at byte-offset 2. Needless to say, things like this could easily result in memory overrun, but the language did not concern itself with such matters.

I.e. in that version of the language your proposed idea about overloading operator . for pointer types would not work: operator . already had very specific meaning when used with pointers (with lvalue pointers or with any lvalues at all). It was very weird functionality, no doubt. But it was there at the time.

Of course, this weird functionality is not a very strong reason against introducing overloaded . operator for pointers (as you suggested) in the reworked version of C - K&R C. But it hasn't been done. Maybe at that time there was some legacy code written in CRM version of C that had to be supported.

(The URL for the 1975 C Reference Manual may not be stable. Another copy, possibly with some subtle differences, is here.)

Similarly in Java, you can create a S4 class in R that encapsulates your information:

setClass(Class="Person",
         representation(
            height="numeric",
            age="numeric"
          )
)

Then your function can return an instance of this class:

myFunction = function(age=28, height=176){
  return(new("Person",
          age=age,
          height=height))
}

and you can access your information:

aPerson = myFunction()

aPerson@age
aPerson@height

As a side note, I have been getting the same error in completely unrelated situation - after my system clock year setting has been changed (i.e. 2015 -> 2016); changing the clock back to the correct one solved the issue.

_{Note 1: I'm posting this mainly because I had the exactly same error message, but the working solution proven to be different than just updating the plugin's version (as posted by Jared Burrows).}

_{Note 2: using}

classpath 'com.android.tools.build:gradle:+'

_{can make the plugin version default to newest one. Bear in mind that your build may break on API changes (and is, for that very reason, discouraged by Android API docs), so use this at your own risk only if you're constantly updating the version anyway.}

The cause for me receiving this error was trying the new pre-release VSCode JS debugger.

If you opted in, change via User settings:

    "debug.javascript.usePreview": true|false

Everything in my normal configuration and integrated terminal was correct and finding executables. I wasted a lot of time trying other things!

The best thing to do it is "Generate scripts for Drop"

Select Database -> Right Click -> Tasks -> Generate Scripts - will open wizard for generating scripts

after choosing objects in set Scripting option click Advanced Button

• -> Set option 'Script to create' to true (want to create)

• -> Set option 'Script to Drop' to true (want to drop)

• -> Select the Check box to select objects wish to create script

• -> Select the choice to write script (File, New window, Clipboard)

• It includes dependent objects by default.(and will drop constraint at first)

  Execute the script

This way we can customize our script.

java.time

Using the java.time framework built into Java 8 and later.

import java.time.Instant;

Instant.now().toEpochMilli(); //Long = 1450879900184
Instant.now().getEpochSecond(); //Long = 1450879900

This works in UTC because Instant.now() is really call to Clock.systemUTC().instant()

https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html

You should use fm element to delete blank spaces.

SELECT TO_CHAR(sysdate, 'fmDAY DD "de" MONTH "de" YYYY') CURRENT_DATE
FROM   dual;

This answer is technically similar or equal to what jcoffland answered. I just added a query to detect if a script is already present or not. I need this because I work in an intranet website with a couple of modules, of which some are sharing scripts or bring their own, but these scripts do not need to be loaded everytime again. I am using this snippet since more than a year in production environment, it works like a charme. Commenting to myself: Yes I know, it would be more correct to ask if a function exists... :-)

if (!$('head > script[src="js/jquery.searchable.min.js"]').length) {
    $('head').append($('<script />').attr('src','js/jquery.searchable.min.js'));
}

You can use margin-top: -50% to move the text all the way to the top of the div.

margin-top: -50%;

If you are planning to get the image from its path, it's better to use Assets instead of trying to figure out the path of the drawable folder.

    InputStream stream = getAssets().open("image.png");
    Drawable d = Drawable.createFromStream(stream, null);

I appreciate that the other solutions do not depend on any other software tool, but why not just use another programming language that can interface to SQLite such as C#, C++, Go, Haskell, Java, Lua, Python, or Rust?

If I am not mistaken, it will be onunload event.

"Occurs when the application is about to be unloaded." - MSDN

In another way, you can also make the two column primary key unique and the auto-increment key primary. Just like this: https://stackoverflow.com/a/6157337

If you are looking for a number that is bigger than all others:

Method 1:

float('inf')

Method 2:

import sys
max = sys.maxsize

If you are looking for a number that is smaller than all others:

Method 1:

float('-inf')

Method 2:

import sys
min = -sys.maxsize - 1

Method 1 works in both Python2 and Python3. Method 2 works in Python3. I have not tried Method 2 in Python2.

The ruby core itself has no support to convert a string from snake case to (upper) camel case (also known as pascal case).

So you need either to make your own implementation or use an existing gem.

There is a small ruby gem called lucky_case which allows you to convert a string from any of the 10+ supported cases to another case easily:

require 'lucky_case'

# to get upper camel case (pascal case) as string
LuckyCase.pascal_case('app_user') # => 'AppUser'
# to get the pascal case constant
LuckyCase.constantize('app_user') # => AppUser
# or the opposite way
LuckyCase.snake_case('AppUser')   # => app_user

You can even monkey patch the String class if you want to:

require 'lucky_case/string'

'app_user'.pascal_case # => 'AppUser'
'app_user'.constantize # => AppUser
# ...

Have a look at the offical repository for more examples and documentation:

https://github.com/magynhard/lucky_case

For anyone who may arrive here at a later time....Nothing worked for me. All my assemblies were fine. I had an app config in one of my Visual Studio Projects that shouldn't have been there. So make sure your app config file is needed.

I deleted the extra app config and it worked.

in your xml

<ProgressBar
        android:id="@+id/progressBar1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        style="@style/CustomProgressBar" 
        android:layout_margin="5dip" />

And in res/values/styles.xml:

<resources> 
        <style name="CustomProgressBar" parent="android:Widget.ProgressBar.Horizontal">
          <item name="android:indeterminateOnly">false</item>
          <item name="android:progressDrawable">@drawable/custom_progress_bar_horizontal</item>
          <item name="android:minHeight">10dip</item>
          <item name="android:maxHeight">20dip</item>
        </style>       
    <style name="AppTheme" parent="android:Theme.Light" />
</resources>

And custom_progress_bar_horizontal is a xml stored in drawable folder which defines your custom progress bar. For more detail see this blog.

I hope this will help you.

In one of my projects there was a nuget packages with higher version of System.Net.Http. and in my startup project there reference to System.Net.Http v 4.0.0 , i just installed System.Net.Http nuget package in my startup project and the problem solved

I use a small function to verify a variable has been declared, which really cuts down on the amount of clutter in my javascript files. I add a check for the value to make sure that the variable not only exists, but has also been assigned a value. The second condition checks whether the variable has also been instantiated, because if the variable has been defined but not instantiated (see example below), it will still throw an error if you try to reference it's value in your code.

Not instantiated - var my_variable; Instantiated - var my_variable = "";

function varExists(el) { 
  if ( typeof el !== "undefined" && typeof el.val() !== "undefined" ) { 
    return true; 
  } else { 
    return false; 
  } 
}

You can then use a conditional statement to test that the variable has been both defined AND instantiated like this...

if ( varExists(variable_name) ) { // checks that it DOES exist } 

or to test that it hasn't been defined and instantiated use...

if( !varExists(variable_name) ) { // checks that it DOESN'T exist }

Keep it simple.

func NowAsUnixMilli() int64 {
    return time.Now().UnixNano() / 1e6
}

I use

<div th:text ="${variable != null} ? (${variable != ''} ? ${variable} : 'empty string message') : 'null message' "></div>

As answered by others, you will probably be happy with Apache Dbcp or c3p0. Both are popular, and work fine.

Regarding your doubt

Doesn't javax.sql or java.sql have pooled connection implementations? Why wouldn't it be best to use these?

They don't provide implementations, rather interfaces and some support classes, only revelant to the programmers that implement third party libraries (pools or drivers). Normally you don't even look at that. Your code should deal with the connections from your pool just as they were "plain" connections, in a transparent way.

Many popular Java webapps, including Jenkins and Nexus, use this mechanism:

1. Optionally, check a servlet context-param / init-param. This allows configuring multiple webapp instances per servlet container, using context.xml which can be done by modifying the WAR or by changing server settings (in case of Tomcat).

2. Check an environment variable (using System.getenv), if it is set, then use that folder as your application data folder. e.g. Jenkins uses JENKINS_HOME and Nexus uses PLEXUS_NEXUS_WORK. This allows flexible configuration without any changes to WAR.

3. Otherwise, use a subfolder inside user's home folder, e.g. $HOME/.yourapp. In Java code this will be:

   final File appFolder = new File(System.getProperty("user.home"), ".yourapp");
   

I ran into the same problem. Here's how I solved it:

find . -name '*FoooBar*' | sed 's/.*/"&"/' | xargs cp ~/foo/bar

I used sed to substitute each line of input with the same line, but surrounded by double quotes. From the sed man page, "...An ampersand (``&'') appearing in the replacement is replaced by the string matching the RE..." -- in this case, .*, the entire line.

This solves the xargs: unterminated quote error.

There is collection of Func<...> classes - Func that is probably what you are looking for:

 void MyMethod(Func<int> param1 = null) 

This defines method that have parameter param1 with default value null (similar to AS), and a function that returns int. Unlike AS in C# you need to specify type of the function's arguments.

So if you AS usage was

MyMethod(function(intArg, stringArg) { return true; }) 

Than in C# it would require param1 to be of type Func<int, siring, bool> and usage like

MyMethod( (intArg, stringArg) => { return true;} ); 

Try to open Visual Studio as admin.

Steps to generate Create table DDLs for all the tables in the Hive database and export into text file to run later:

step 1)
create a .sh file with the below content, say hive_table_ddl.sh

#!/bin/bash
rm -f tableNames.txt
rm -f HiveTableDDL.txt
hive -e "use $1; show tables;" > tableNames.txt  
wait
cat tableNames.txt |while read LINE
   do
   hive -e "use $1;show create table $LINE;" >>HiveTableDDL.txt
   echo  -e "\n" >> HiveTableDDL.txt
   done
rm -f tableNames.txt
echo "Table DDL generated"

step 2)

Run the above shell script by passing 'db name' as paramanter

>bash hive_table_dd.sh <<databasename>>

output :

All the create table statements of your DB will be written into the HiveTableDDL.txt

There's a rather crude way of doing this, but be careful because first, this relies on python interpreter process identifying themselves as python, and second, it has the concomitant effect of also killing any other processes identified by that name.

In short, you can kill all python interpreters by typing this into your shell (make sure you read the caveats above!):

ps aux | grep python | grep -v "grep python" | awk '{print $2}' | xargs kill -9

To break this down, this is how it works. The first bit, ps aux | grep python | grep -v "grep python", gets the list of all processes calling themselves python, with the grep -v making sure that the grep command you just ran isn't also included in the output. Next, we use awk to get the second column of the output, which has the process ID's. Finally, these processes are all (rather unceremoniously) killed by supplying each of them with kill -9.

Alternative way of converting to csv. Use libreoffice:

libreoffice --headless --convert-to csv *

Please be aware that this will only convert the first worksheet of your Excel file.

Deep copying can only be done with each class's consent. If you have control over the class hierarchy then you can implement the clonable interface and implement the Clone method. Otherwise doing a deep copy is impossible to do safely because the object may also be sharing non-data resources (e.g. database connections). In general however deep copying is considered bad practice in the Java environment and should be avoided via the appropriate design practices.

use Mixins for ES6 multiple Inheritence.

let classTwo = Base => class extends Base{
    // ClassTwo Code
};

class Example extends classTwo(ClassOne) {
    constructor() {
    }
}

Try this one: http://www.asp.net/downloads/essential This has web developer and VS2008 express

There are three versions: assembly, file, and product. They are used by different features and take on different default values if you don't explicit specify them.

string assemblyVersion = Assembly.GetExecutingAssembly().GetName().Version.ToString(); 
string assemblyVersion = Assembly.LoadFile("your assembly file").GetName().Version.ToString(); 
string fileVersion = FileVersionInfo.GetVersionInfo(Assembly.GetExecutingAssembly().Location).FileVersion; 
string productVersion = FileVersionInfo.GetVersionInfo(Assembly.GetExecutingAssembly().Location).ProductVersion;

Carry Flag is a flag set when:

a) two unsigned numbers were added and the result is larger than "capacity" of register where it is saved. Ex: we wanna add two 8 bit numbers and save result in 8 bit register. In your example: 255 + 9 = 264 which is more that 8 bit register can store. So the value "8" will be saved there (264 & 255 = 8) and CF flag will be set.

b) two unsigned numbers were subtracted and we subtracted the bigger one from the smaller one. Ex: 1-2 will give you 255 in result and CF flag will be set.

Auxiliary Flag is used as CF but when working with BCD. So AF will be set when we have overflow or underflow on in BCD calculations. For example: considering 8 bit ALU unit, Auxiliary flag is set when there is carry from 3rd bit to 4th bit i.e. carry from lower nibble to higher nibble. (Wiki link)

Overflow Flag is used as CF but when we work on signed numbers. Ex we wanna add two 8 bit signed numbers: 127 + 2. the result is 129 but it is too much for 8bit signed number, so OF will be set. Similar when the result is too small like -128 - 1 = -129 which is out of scope for 8 bit signed numbers.

You can read more about flags on wikipedia

Make sure that both projects have same target framework version here: right click on project -> properties -> application (tab) -> target framework

Also, make sure that the project "logger" (which you want to include in the main project) has the output type "Class Library" in: right click on project -> properties -> application (tab) -> output type

Finally, Rebuild the solution.

I think there is no out-of-the-box support for that in VS Code.

You can install a plugin to give you similar functionality. Eg.:

https://marketplace.visualstudio.com/items?itemName=micnil.vscode-checkpoints

Or the more famous:

https://marketplace.visualstudio.com/items?itemName=xyz.local-history

Some details may need to be configured: The VS Code search gets confused sometimes because of additional folders created by this type of plugins. You can configure it to ignore such folders or change their locations (adding such folders to your .gitignore file also solves this problem).

Remove

<uses-permission android:name="${applicationId}.permission.C2D_MESSAGE"/>
<permission
    android:name="${applicationId}.permission.C2D_MESSAGE"
    android:protectionLevel="signature"/>

Run App... Then Add the permisson again and Run App.

Ready!.

As you already state in your question, the main difference between union and struct is that union members overlay the memory of each other so that the sizeof of a union is the one , while struct members are laid out one after each other (with optional padding in between). Also an union is large enough to contain all its members, and have an alignment that fits all its members. So let's say int can only be stored at 2 byte addresses and is 2 bytes wide, and long can only be stored at 4 byte addresses and is 4 bytes long. The following union

union test {
    int a;
    long b;
}; 

could have a sizeof of 4, and an alignment requirement of 4. Both an union and a struct can have padding at the end, but not at their beginning. Writing to a struct changes only the value of the member written to. Writing to a member of an union will render the value of all other members invalid. You cannot access them if you haven't written to them before, otherwise the behavior is undefined. GCC provides as an extension that you can actually read from members of an union, even though you haven't written to them most recently. For an Operation System, it doesn't have to matter whether a user program writes to an union or to a structure. This actually is only an issue of the compiler.

Another important property of union and struct is, they allow that a pointer to them can point to types of any of its members. So the following is valid:

struct test {
    int a;
    double b;
} * some_test_pointer;

some_test_pointer can point to int* or double*. If you cast an address of type test to int*, it will point to its first member, a, actually. The same is true for an union too. Thus, because an union will always have the right alignment, you can use an union to make pointing to some type valid:

union a {
    int a;
    double b;
};

That union will actually be able to point to an int, and a double:

union a * v = (union a*)some_int_pointer;
*some_int_pointer = 5;
v->a = 10;
return *some_int_pointer;    

is actually valid, as stated by the C99 standard:

An object shall have its stored value accessed only by an lvalue expression that has one of the following types:

• a type compatible with the effective type of the object
• ...
• an aggregate or union type that includes one of the aforementioned types among its members

The compiler won't optimize out the v->a = 10; as it could affect the value of *some_int_pointer (and the function will return 10 instead of 5).

If you had use strict turned on, you would have found out that $++foo doesn't make any sense.

Here's how to do it:

use strict;
use warnings;

my $file = 'SnPmaster.txt';
open my $info, $file or die "Could not open $file: $!";

while( my $line = <$info>)  {   
    print $line;    
    last if $. == 2;
}

close $info;

This takes advantage of the special variable $. which keeps track of the line number in the current file. (See perlvar)

If you want to use a counter instead, use

my $count = 0;
while( my $line = <$info>)  {   
    print $line;    
    last if ++$count == 2;
}

I think what you are looking for is something like this:

$(field).closest("form").submit();

For example, to handle the onchange event, you would have this:

$(select your fields here).change(function() {
    $(this).closest("form").submit();
});

If, for some reason you aren't using jQuery 1.3 or above, you can call parents instead of closest.

You can't use named parameters in JDBC itself. You could try using Spring framework, as it has some extensions that allow the use of named parameters in queries.

If you want to disable a set of, or say a particular kind of view.Let's say you want to disable a fixed number of buttons with some particular text of or no text then you can use array of that type and loop through the array elements while disabling the buttons using setEnabled(false) property You can do it on a function call like this:

public void disable(){
        for(int i=0;i<9;i++){
                if(bt[i].getText().equals("")){//Button Text condition
                    bt[i].setEnabled(false);
            }
        }
}

I will show you some examples:

First example, do not return local scope object, for example:

const string &dontDoThis(const string &s)
{
    string local = s;
    return local;
}

You can't return local by reference, because local is destroyed at the end of the body of dontDoThis.

Second example, you can return by reference:

const string &shorterString(const string &s1, const string &s2)
{
    return (s1.size() < s2.size()) ? s1 : s2;
}

Here, you can return by reference both s1 and s2 because they were defined before shorterString was called.

Third example:

char &get_val(string &str, string::size_type ix)
{
    return str[ix];
}

usage code as below:

string s("123456");
cout << s << endl;
char &ch = get_val(s, 0); 
ch = 'A';
cout << s << endl; // A23456

get_val can return elements of s by reference because s still exists after the call.

Fourth example

class Student
{
public:
    string m_name;
    int age;    

    string &getName();
};

string &Student::getName()
{
    // you can return by reference
    return m_name;
}

string& Test(Student &student)
{
    // we can return `m_name` by reference here because `student` still exists after the call
    return stu.m_name;
}

usage example:

Student student;
student.m_name = 'jack';
string name = student.getName();
// or
string name2 = Test(student);

Fifth example:

class String
{
private:
    char *str_;

public:
    String &operator=(const String &str);
};

String &String::operator=(const String &str)
{
    if (this == &str)
    {
        return *this;
    }
    delete [] str_;
    int length = strlen(str.str_);
    str_ = new char[length + 1];
    strcpy(str_, str.str_);
    return *this;
}

You could then use the operator= above like this:

String a;
String b;
String c = b = a;

We can pass the object from one activity to another activity:

SupplierDetails poSuppliersDetails = new SupplierDetails();

Inside poSuppliersDetails we have some values. Now I am sending this object to target activity:

Intent iPODetails = new Intent(ActivityOne.this, ActivityTwo.class);
iPODetails.putExtra("poSuppliersDetails", poSuppliersDetails);

How to get this in ACtivityTwo:

private SupplierDetails supplierDetails;
    supplierDetails =(SupplierDetails) getIntent().getSerializableExtra("poSuppliersDetails");

I finally find this file on the disk.The 'local.properties' file in The Android studio is not which you modify.see the picture,so you can modify this line 'sdk.dir' to your dir of sdk.Remember not in the android studio.

Easy and better than str_replace:

<?php
$arr = array(
    "http://" => "http://www.",
    "w" => "W",
    "d" => "D");

    $word = "http://desiweb.ir";
    echo strtr($word,$arr);
?>

strtr PHP doc here

From the docs (note: MSDN is a handy resource when you want to know what things do!):

ExecuteScalar

Use the ExecuteScalar method to retrieve a single value (for example, an aggregate value) from a database. This requires less code than using the ExecuteReader method, and then performing the operations that you need to generate the single value using the data returned by a SqlDataReader.

ExecuteReader

Sends the CommandText to the Connection and builds a SqlDataReader.

... and from SqlDataReader ...

Provides a way of reading a forward-only stream of rows from a SQL Server database. This class cannot be inherited.

ExecuteNonQuery

You can use the ExecuteNonQuery to perform catalog operations (for example, querying the structure of a database or creating database objects such as tables), or to change the data in a database without using a DataSet by executing UPDATE, INSERT, or DELETE statements.

This solution will only work if you have tree installed on your system. However I'm leaving this solution here just in case it helps someone else out.

You can tell tree to output the tree structure as XML (tree -X) or JSON (tree -J). JSON of course can be parsed directly with python and XML can easily be read with lxml.

With the following directory structure as an example:

[sri@localhost Projects]$ tree --charset=ascii bands
bands
|-- DreamTroll
|   |-- MattBaldwinson
|   |-- members.txt
|   |-- PaulCarter
|   |-- SimonBlakelock
|   `-- Rob Stringer
|-- KingsX
|   |-- DougPinnick
|   |-- JerryGaskill
|   |-- members.txt
|   `-- TyTabor
|-- Megadeth
|   |-- DaveMustaine
|   |-- DavidEllefson
|   |-- DirkVerbeuren
|   |-- KikoLoureiro
|   `-- members.txt
|-- Nightwish
|   |-- EmppuVuorinen
|   |-- FloorJansen
|   |-- JukkaNevalainen
|   |-- MarcoHietala
|   |-- members.txt
|   |-- TroyDonockley
|   `-- TuomasHolopainen
`-- Rush
    |-- AlexLifeson
    |-- GeddyLee
    `-- NeilPeart

5 directories, 25 files

XML

<?xml version="1.0" encoding="UTF-8"?>
<tree>
  <directory name="bands">
    <directory name="DreamTroll">
      <file name="MattBaldwinson"></file>
      <file name="members.txt"></file>
      <file name="PaulCarter"></file>
      <file name="RobStringer"></file>
      <file name="SimonBlakelock"></file>
    </directory>
    <directory name="KingsX">
      <file name="DougPinnick"></file>
      <file name="JerryGaskill"></file>
      <file name="members.txt"></file>
      <file name="TyTabor"></file>
    </directory>
    <directory name="Megadeth">
      <file name="DaveMustaine"></file>
      <file name="DavidEllefson"></file>
      <file name="DirkVerbeuren"></file>
      <file name="KikoLoureiro"></file>
      <file name="members.txt"></file>
    </directory>
    <directory name="Nightwish">
      <file name="EmppuVuorinen"></file>
      <file name="FloorJansen"></file>
      <file name="JukkaNevalainen"></file>
      <file name="MarcoHietala"></file>
      <file name="members.txt"></file>
      <file name="TroyDonockley"></file>
      <file name="TuomasHolopainen"></file>
    </directory>
    <directory name="Rush">
      <file name="AlexLifeson"></file>
      <file name="GeddyLee"></file>
      <file name="NeilPeart"></file>
    </directory>
  </directory>
  <report>
    <directories>5</directories>
    <files>25</files>
  </report>
</tree>

JSON

[sri@localhost Projects]$ tree -J bands
[
  {"type":"directory","name":"bands","contents":[
    {"type":"directory","name":"DreamTroll","contents":[
      {"type":"file","name":"MattBaldwinson"},
      {"type":"file","name":"members.txt"},
      {"type":"file","name":"PaulCarter"},
      {"type":"file","name":"RobStringer"},
      {"type":"file","name":"SimonBlakelock"}
    ]},
    {"type":"directory","name":"KingsX","contents":[
      {"type":"file","name":"DougPinnick"},
      {"type":"file","name":"JerryGaskill"},
      {"type":"file","name":"members.txt"},
      {"type":"file","name":"TyTabor"}
    ]},
    {"type":"directory","name":"Megadeth","contents":[
      {"type":"file","name":"DaveMustaine"},
      {"type":"file","name":"DavidEllefson"},
      {"type":"file","name":"DirkVerbeuren"},
      {"type":"file","name":"KikoLoureiro"},
      {"type":"file","name":"members.txt"}
    ]},
    {"type":"directory","name":"Nightwish","contents":[
      {"type":"file","name":"EmppuVuorinen"},
      {"type":"file","name":"FloorJansen"},
      {"type":"file","name":"JukkaNevalainen"},
      {"type":"file","name":"MarcoHietala"},
      {"type":"file","name":"members.txt"},
      {"type":"file","name":"TroyDonockley"},
      {"type":"file","name":"TuomasHolopainen"}
    ]},
    {"type":"directory","name":"Rush","contents":[
      {"type":"file","name":"AlexLifeson"},
      {"type":"file","name":"GeddyLee"},
      {"type":"file","name":"NeilPeart"}
    ]}
  ]},
  {"type":"report","directories":5,"files":25}
]

For completeness, also look into the local storage capabilities & sessionStorage of HTML5. These are supported in the latest versions of all modern browsers, and are much easier to use and less fiddly than cookies.

http://www.w3.org/TR/2009/WD-webstorage-20091222/

https://www.w3.org/TR/webstorage/. (second edition)

Here are some sample code for setting and getting the values using sessionStorage and localStorage :

 // HTML5 session Storage
 sessionStorage.setItem("variableName","test");
 sessionStorage.getItem("variableName");


//HTML5 local storage 
localStorage.setItem("variableName","Text");
// Receiving the data:
localStorage.getItem("variableName");

I know this is an older post, but it helped me out. I've also found that for bootstrap v4 you can also change the arrow color by overriding the controls like this:

.carousel-control-prev-icon {
 background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0 0 8 8'%3E%3Cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3E%3C/svg%3E") !important;
}

.carousel-control-next-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0 0 8 8'%3E%3Cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3E%3C/svg%3E") !important;
}

Where you change fill='%23fff' the fff at the end to any hexadecimal value that you want. For example:

fill='%23000' for black, fill='%23ff0000' for red and so on. Just a note, I haven't tested this without the !important declaration.

There are errors here :

var formTag = document.getElementsByTagName("form"), // form tag is an array
selectListItem = $('select'),
makeSelect = document.createElement('select'),
makeSelect.setAttribute("id", "groups");

The code must change to:

var formTag = document.getElementsByTagName("form");
var selectListItem = $('select');
var makeSelect = document.createElement('select');
makeSelect.setAttribute("id", "groups");

By the way, there is another error at line 129 :

var createLi.appendChild(createSubList);

Replace it with:

createLi.appendChild(createSubList);

Add a new pandas.Series using pandas.DataFrame.append().

If you wish to specify the name (AKA the "index") of the new row, use:

df.append(pandas.Series(name='NameOfNewRow'))

If you don't wish to name the new row, use:

df.append(pandas.Series(), ignore_index=True)

where df is your pandas.DataFrame.

simple answer:

let str = 'this is string, length is >26';_x000D_
_x000D_
console.log([...str]);

Below query can work :

SELECT user_id, value, date , row_number() OVER (PARTITION BY user_id ORDER BY date desc) AS rn
FROM table_name
WHERE rn= 1

#include <iostream>
#include <deque>
#include <queue>

struct node
{
    int data;
    node *left;
    node *right;
};

bool isBalanced(node *root)
{
    if ( !root)
    {
        return true;
    }

    std::queue<node *> q1;
    std::queue<int>  q2;
    int level = 0, last_level = -1, node_count = 0;

    q1.push(root);
    q2.push(level);

    while ( !q1.empty() )
    {
        node *current = q1.front();
        level = q2.front();

        q1.pop();
        q2.pop();

        if ( level )
        {
            ++node_count;
        }

                if ( current->left )
                {
                        q1.push(current->left);
                        q2.push(level + 1);
                }

                if ( current->right )
                {
                        q1.push(current->right);
                        q2.push(level + 1);
                }

        if ( level != last_level )
        {
            std::cout << "Check: " << (node_count ? node_count - 1 : 1) << ", Level: " << level << ", Old level: " << last_level << std::endl;
            if ( level && (node_count - 1) != (1 << (level-1)) )
            {
                return false;
            }

            last_level = q2.front();
            if ( level ) node_count = 1;
        }
    }

    return true;
}

int main()
{
    node tree[15];

    tree[0].left  = &tree[1];
    tree[0].right = &tree[2];
    tree[1].left  = &tree[3];
    tree[1].right = &tree[4];
    tree[2].left  = &tree[5];
    tree[2].right = &tree[6];
    tree[3].left  = &tree[7];
    tree[3].right = &tree[8];
    tree[4].left  = &tree[9];   // NULL;
    tree[4].right = &tree[10];  // NULL;
    tree[5].left  = &tree[11];  // NULL;
    tree[5].right = &tree[12];  // NULL;
    tree[6].left  = &tree[13];
    tree[6].right = &tree[14];
    tree[7].left  = &tree[11];
    tree[7].right = &tree[12];
    tree[8].left  = NULL;
    tree[8].right = &tree[10];
    tree[9].left  = NULL;
    tree[9].right = &tree[10];
    tree[10].left = NULL;
    tree[10].right= NULL;
    tree[11].left = NULL;
    tree[11].right= NULL;
    tree[12].left = NULL;
    tree[12].right= NULL;
    tree[13].left = NULL;
    tree[13].right= NULL;
    tree[14].left = NULL;
    tree[14].right= NULL;

    std::cout << "Result: " << isBalanced(tree) << std::endl;

    return 0;
}

You can bind to dom directly

<div dangerouslySetInnerHTML={{__html: '<p>First &middot; Second</p>'}}></div>

The simplest approach is to use ExecutorService.invokeAll() which does what you want in a one-liner. In your parlance, you'll need to modify or wrap ComputeDTask to implement Callable<>, which can give you quite a bit more flexibility. Probably in your app there is a meaningful implementation of Callable.call(), but here's a way to wrap it if not using Executors.callable().

ExecutorService es = Executors.newFixedThreadPool(2);
List<Callable<Object>> todo = new ArrayList<Callable<Object>>(singleTable.size());

for (DataTable singleTable: uniquePhrases) { 
    todo.add(Executors.callable(new ComputeDTask(singleTable))); 
}

List<Future<Object>> answers = es.invokeAll(todo);

As others have pointed out, you could use the timeout version of invokeAll() if appropriate. In this example, answers is going to contain a bunch of Futures which will return nulls (see definition of Executors.callable(). Probably what you want to do is a slight refactoring so you can get a useful answer back, or a reference to the underlying ComputeDTask, but I can't tell from your example.

If it isn't clear, note that invokeAll() will not return until all the tasks are completed. (i.e., all the Futures in your answers collection will report .isDone() if asked.) This avoids all the manual shutdown, awaitTermination, etc... and allows you to reuse this ExecutorService neatly for multiple cycles, if desired.

There are a few related questions on SO:

• How to wait for all threads to finish

• Return values from java threads

• invokeAll() not willing to accept a Collection<Callable<t>>

• Do I need to synchronize?

None of these are strictly on-point for your question, but they do provide a bit of color about how folks think Executor/ExecutorService ought to be used.

I had the same problem and none of the above worked, but the following solution worked for me:

On my Nexus 4:

• Go to Settings

• Choose Developer options (from the end of the list after pressing seven times on "About phone")

• Check the "USB debugging" and press OK.

glOrtho describes a transformation that produces a parallel projection. The current matrix (see glMatrixMode) is multiplied by this matrix and the result replaces the current matrix, as if glMultMatrix were called with the following matrix as its argument:

OpenGL documentation (my bold)

The numbers define the locations of the clipping planes (left, right, bottom, top, near and far).

The "normal" projection is a perspective projection that provides the illusion of depth. Wikipedia defines a parallel projection as:

Parallel projections have lines of projection that are parallel both in reality and in the projection plane.

Parallel projection corresponds to a perspective projection with a hypothetical viewpoint—e.g., one where the camera lies an infinite distance away from the object and has an infinite focal length, or "zoom".

here is the correct way of using proxy along with creds..

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);

IWebProxy proxy = request.Proxy;                    
if (proxy != null)
{
    Console.WriteLine("Proxy: {0}", proxy.GetProxy(request.RequestUri));
}
else
{
    Console.WriteLine("Proxy is null; no proxy will be used");
}

WebProxy myProxy = new WebProxy();
Uri newUri = new Uri("http://20.154.23.100:8888");
// Associate the newUri object to 'myProxy' object so that new myProxy settings can be set.
myProxy.Address = newUri;
// Create a NetworkCredential object and associate it with the 
// Proxy property of request object.
myProxy.Credentials = new NetworkCredential("userName", "password");
request.Proxy = myProxy;

Thanks everyone for help... :)

When debugging optimized programs (which may be necessary if the bug doesn't show up in debug builds), you often have to understand assembly compiler generated.

In your particular case, return value of cpnd_find_exact_ckptinfo will be stored in the register which is used on your platform for return values. On ix86, that would be %eax. On x86_64: %rax, etc. You may need to google for '[your processor] procedure calling convention' if it's none of the above.

You can examine that register in GDB and you can set it. E.g. on ix86:

(gdb) p $eax
(gdb) set $eax = 0 

I think this is a better approach. Simple and straight forward.

public function sizeFilter( $bytes )
{
    $label = array( 'B', 'KB', 'MB', 'GB', 'TB', 'PB' );
    for( $i = 0; $bytes >= 1024 && $i < ( count( $label ) -1 ); $bytes /= 1024, $i++ );
    return( round( $bytes, 2 ) . " " . $label[$i] );
}

BufferedReader#read reads single character[0 to 65535 (0x00-0xffff)] from the stream, so it is not possible to read single integer from stream.

            String s= inp.readLine();
            int[] m= new int[2];
            String[] s1 = inp.readLine().split(" ");
            m[0]=Integer.parseInt(s1[0]);
            m[1]=Integer.parseInt(s1[1]);

            // Checking whether I am taking the inputs correctly
            System.out.println(s);
            System.out.println(m[0]);
            System.out.println(m[1]);

You can check also Scanner vs. BufferedReader.

The grep family of commands (incl egrep, fgrep) is the usual solution for this.

$ grep pattern filename

If you're searching source code, then ack may be a better bet. It'll search subdirectories automatically and avoid files you'd normally not search (objects, SCM directories etc.)

Contrary to some of the above answers, here is my understanding based on experience with each of them:

• MySQL: database/schema :: table
• SQL Server: database :: (schema/namespace ::) table
• Oracle: database/schema/user :: (tablespace ::) table

Please correct me on whether tablespace is optional or not with Oracle, it's been a long time since I remember using them.

Jan 2019: Jest version 23.6

For anyone looking into this question recently especially if testing using npm or yarn directly

Currently, you don't have to change the configuration options

As per Jest official website, you can do the following to generate coverage reports:

1- For npm:

You must put -- before passing the --coverage argument of Jest

npm test -- --coverage

if you try invoking the --coverage directly without the -- it won't work

2- For yarn:

You can pass the --coverage argument of jest directly

yarn test --coverage

How to convert from one date format to another using SimpleDateFormat:

final String OLD_FORMAT = "dd/MM/yyyy";
final String NEW_FORMAT = "yyyy/MM/dd";

// August 12, 2010
String oldDateString = "12/08/2010";
String newDateString;

SimpleDateFormat sdf = new SimpleDateFormat(OLD_FORMAT);
Date d = sdf.parse(oldDateString);
sdf.applyPattern(NEW_FORMAT);
newDateString = sdf.format(d);

An example,

 d <- data.frame(x1=rnorm(10),
                 x2=rnorm(10),
                 x3=rnorm(10))
cor(d) # get correlations (returns matrix)

May be this will help some one. I have my proxy setup in python script but keep getting the error mentioned in the question.

Below is the piece of block which will take my username and password as a constant in the beginning.

   if (use_proxy):
        proxy = req.ProxyHandler({'https': proxy_url})
        auth = req.HTTPBasicAuthHandler()
        opener = req.build_opener(proxy, auth, req.HTTPHandler)
        req.install_opener(opener)

If you are using corporate laptop and if you did not connect to Direct Access or office VPN then the above block will throw error. All you need to do is to connect to your org VPN and then execute your python script.

Thanks

var a = [5, 5, 5, 2, 2, 2, 2, 2, 9, 4].reduce(function (acc, curr) {
  if (typeof acc[curr] == 'undefined') {
    acc[curr] = 1;
  } else {
    acc[curr] += 1;
  }

  return acc;
}, {});

// a == {2: 5, 4: 1, 5: 3, 9: 1}

Use Object#toString().

String string = map.toString();

That's after all also what System.out.println(object) does under the hoods. The format for maps is described in AbstractMap#toString().

Returns a string representation of this map. The string representation consists of a list of key-value mappings in the order returned by the map's entrySet view's iterator, enclosed in braces ("{}"). Adjacent mappings are separated by the characters ", " (comma and space). Each key-value mapping is rendered as the key followed by an equals sign ("=") followed by the associated value. Keys and values are converted to strings as by String.valueOf(Object).

There is an eclipse.ini (sts.ini) parameter that can help:

-Djava.net.useSystemProxies=true

A lot of effort wasted on this trivial setting each time I change the work environment... See one of the related bugs on eclipse bugzilla.

On Windows, if you are unwilling or unable to restart the machine see below.

Install Process Explorer: https://technet.microsoft.com/en-us/sysinternals/bb896653.aspx

In Process Explorer, Find > File Handle or DLL ...

Type in the file name mentioned in the error (for my error it was 'git-rebase-todo' but in the question above, 'done').

Process Explorer will highlight the process holding a lock on the file (for me it was 'grep').

Kill the process and you will be able to abort the git action in the standard way.

Perhaps str.to_s.downcase == 'true' for completeness. Then nothing can crash even if str is nil or 0.

if you read through the CDK libraries and the material libraries, they're using inheritance but not so much for components themselves, content projection is king IMO. see this link https://blog.angular-university.io/angular-ng-content/ where it says "the key problem with this design"

I know this doesn't answer your question but I really think inheriting / extending components should be avoided. Here's my reasoning:

If the abstract class extended by two or more components contains shared logic: use a service or even create a new typescript class that can be shared between the two components.

If the abstract class... contains shared variables or onClicketc functions, Then there will be duplication between the html of the two extending components views. This is bad practice & that shared html needs to be broken into Component(s). These Component(s) (parts) can be shared between the two components.

Am I missing other reasons for having an abstract class for components?

An example I saw recently was components extending AutoUnsubscribe:

import { Subscription } from 'rxjs';
import { OnDestroy } from '@angular/core';
export abstract class AutoUnsubscribeComponent implements OnDestroy {
  protected infiniteSubscriptions: Array<Subscription>;

  constructor() {
    this.infiniteSubscriptions = [];
  }

  ngOnDestroy() {
    this.infiniteSubscriptions.forEach((subscription) => {
      subscription.unsubscribe();
    });
  }
}

this was bas because throughout a large codebase, infiniteSubscriptions.push() was only used 10 times. Also importing & extending AutoUnsubscribe actually takes more code than just adding mySubscription.unsubscribe() in the ngOnDestroy() method of the component itself, which required additional logic anyway.

I think the nearest C# equivalent to int* would be ref int?. Because ref int? allows the called method to pass a value back to the calling method.

int*

• Can be null.
• Can be non-null and point to an integer value.
• If not null, value can be changed, and the change propagates to the caller.
• Setting to null is not passed back to the caller.

ref int?

• Can be null.
• Can have an integer value.
• Value can be always be changed, and the change propagates to the caller.
• Value can be set to null, and this change will also propagate to the caller.

I run into the same problem recently, when building a project with ios5 sdk. At first it was building and running properly, but after that the error appeared.
In my case the solution was rather simple.
What was missing, was that somehow the Main Interface property in the summary tab of my application target got erased. So I needed to set it again.

If this is not the point, and if the tabBarController is still nil, you can always programmatically create your window and root controller. As a fallback I added the following code to my project

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{ 
    if (!window && !navigationController) {
        NSLog(@"Window and navigation controller not loaded from nib. Will be created programatically.");
        self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
        UIViewController *viewController1, *viewController2;
        viewController1 = [[[FirstViewController alloc] initWithNibName:@"FirstViewController_iPhone" bundle:nil] autorelease];
        viewController2 = [[[SecondViewController alloc] initWithNibName:@"SecondViewController_iPhone" bundle:nil] autorelease];

        self.tabBarController = [[[UITabBarController alloc] init] autorelease];
        self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, nil];
        self.window.rootViewController = self.tabBarController;

    }
    else {
        [window addSubview:[tabBarController view]];
    }
    [self.window makeKeyAndVisible];
    return YES;
}

This will work only if sho's solution is implemented also.

Maybe you should try removing "new" keyword and see if works. Because last time I got this error when I tried creating Typeface something like this:

Typeface typeface = new Typeface().create("Arial",Typeface.BOLD);

The simplest solution that I can think of is using Properties class.

Saving the map:

Map<String, String> ldapContent = new HashMap<String, String>();
Properties properties = new Properties();

for (Map.Entry<String,String> entry : ldapContent.entrySet()) {
    properties.put(entry.getKey(), entry.getValue());
}

properties.store(new FileOutputStream("data.properties"), null);

Loading the map:

Map<String, String> ldapContent = new HashMap<String, String>();
Properties properties = new Properties();
properties.load(new FileInputStream("data.properties"));

for (String key : properties.stringPropertyNames()) {
   ldapContent.put(key, properties.get(key).toString());
}

EDIT:

if your map contains plaintext values, they will be visible if you open file data via any text editor, which is not the case if you serialize the map:

ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("data.ser"));
out.writeObject(ldapContent);
out.close();

EDIT2:

instead of for loop (as suggested by OldCurmudgeon) in saving example:

properties.putAll(ldapContent);

however, for the loading example this is the best that can be done:

ldapContent = new HashMap<Object, Object>(properties);

This will defiantly help you,

https://davidwinter.me/enable-php-error-logging/

OR

In php.ini: (vim /etc/php.ini Or Sudo vim /usr/local/etc/php/7.1/php.ini)

display_errors = Off

log_errors = On

error_log = /var/log/php-errors.log

Make the log file, and writable by www-data:

sudo touch /var/log/php-errors.log

/var/log/php-errors.log

sudo chown :www

Thanks,

You can use MODIFY COLUMN to do this. Just do...

ALTER TABLE YourTable
MODIFY COLUMN your_column
your_previous_column_definition COMMENT "Your new comment"

substituting:

• YourTable with the name of your table
• your_column with the name of your comment
• your_previous_column_definition with the column's column_definition, which I recommend getting via a SHOW CREATE TABLE YourTable command and copying verbatim to avoid any traps.*
• Your new comment with the column comment you want.

For example...

mysql> CREATE TABLE `Example` (
    ->   `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
    ->   `some_col` varchar(255) DEFAULT NULL,
    ->   PRIMARY KEY (`id`)
    -> );
Query OK, 0 rows affected (0.18 sec)

mysql> ALTER TABLE Example
    -> MODIFY COLUMN `id`
    -> int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 'Look, I''m a comment!';
Query OK, 0 rows affected (0.07 sec)
Records: 0  Duplicates: 0  Warnings: 0

mysql> SHOW CREATE TABLE Example;
+---------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table   | Create Table                                                                                                                                                                                                  |
+---------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Example | CREATE TABLE `Example` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 'Look, I''m a comment!',
  `some_col` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
+---------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

* Whenever you use MODIFY or CHANGE clauses in an ALTER TABLE statement, I suggest you copy the column definition from the output of a SHOW CREATE TABLE statement. This protects you from accidentally losing an important part of your column definition by not realising that you need to include it in your MODIFY or CHANGE clause. For example, if you MODIFY an AUTO_INCREMENT column, you need to explicitly specify the AUTO_INCREMENT modifier again in the MODIFY clause, or the column will cease to be an AUTO_INCREMENT column. Similarly, if the column is defined as NOT NULL or has a DEFAULT value, these details need to be included when doing a MODIFY or CHANGE on the column or they will be lost.

Have you unistalled your Internet Explorer? I did, and I had the same issues, if so, you have to:

1. Reactivate IE (Control Panel -- Programs and Features -- Turn Windows features on or off).
2. restarting the computer
3. (important!) running Windows Update to get all available updates for Microsoft Explorer
4. restarting the computer (again)

Finally it works!

Perhaps a simple way to remember: add a dot after the numerator (or denominator)

16 ** (1. / 2)   # 4
289 ** (1. / 2)  # 17
27 ** (1. / 3)   # 3

That works better with this :

var fso = new ActiveXObject("Scripting.FileSystemObject");
var a = fso.CreateTextFile("c:\\testfile.txt", true);
a.WriteLine("This is a test.");
a.Close();

http://msdn.microsoft.com/en-us/library/5t9b5c0c(v=vs.84).aspx

It is not possible to export an Android library as a jar file. It is possible, however, to export it as aar file. Aar files being the new binary format for Android libraries. There's info about them in Google I/O, the New Build System video.

First, build the library in Android Studio or from command line issuing gradle build from your library's root directory.

This will result in <yourlibroot>/libs/build/yourlib.aar file.

This aar file is a binary representation of your library and can be added to your project instead of the library as a dependency project.

To add aar file as a dependency you have to publish it to the maven central or to your local maven repository, and then refer the aar file in your project's gradle.build file.

However, this step is a bit convoluted. I've found a good explanation how to do so here:

http://www.flexlabs.org/2013/06/using-local-aar-android-library-packages-in-gradle-builds

Your line:

img = cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2) 

will draw a rectangle in the image, but the return value will be None, so img changes to None and cannot be drawn.

Try

cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2) 

This might not be the best method, but you can ignore the conversion error if all else fails. Mine was an issue of nulls not converting properly, so I just ignored the error and the dates came in as dates and the nulls came in as nulls, so no data quality issues--not that this would always be the case. To do this, right click on your source, click Edit, then Error Output. Go to the column that's giving you grief and under Error change it to Ignore Failure.

You can use INTERVAL type or just add calculated number value - "1" is equal "1 day".

first way:

select date_column + INTERVAL '0 01:00:00' DAY TO SECOND from dual;

second way:

select date_column + 1/24 from dual;

First way is more convenient when you need to add a complicated value - for example, "1 day 3 hours 25 minutes 49 seconds". See also: http://www.oracle-base.com/articles/misc/oracle-dates-timestamps-and-intervals.php

Also you have to remember that oracle have two interval types - DAY TO SECOND and YEAR TO MONTH. As for me, one interval type would be better, but I hope people in oracle knows, what they do ;)

Indexing a list is done using double bracket, i.e. hypo_list[[1]] (e.g. have a look here: http://www.r-tutor.com/r-introduction/list). BTW: read.table does not return a table but a dataframe (see value section in ?read.table). So you will have a list of dataframes, rather than a list of table objects. The principal mechanism is identical for tables and dataframes though.

Note: In R, the index for the first entry is a 1 (not 0 like in some other languages).

Dataframes

l <- list(anscombe, iris)   # put dfs in list
l[[1]]             # returns anscombe dataframe

anscombe[1:2, 2]   # access first two rows and second column of dataset
[1] 10  8

l[[1]][1:2, 2]     # the same but selecting the dataframe from the list first
[1] 10  8

Table objects

tbl1 <- table(sample(1:5, 50, rep=T))
tbl2 <- table(sample(1:5, 50, rep=T))
l <- list(tbl1, tbl2)  # put tables in a list

tbl1[1:2]              # access first two elements of table 1 

Now with the list

l[[1]]                 # access first table from the list

1  2  3  4  5 
9 11 12  9  9 

l[[1]][1:2]            # access first two elements in first table

1  2 
9 11 

Add your <script> to the bottom of your <body>, or add an event listener for DOMContentLoaded following this StackOverflow question.

If that script executes in the <head> section of the code, document.getElementsByClassName(...) will return an empty array because the DOM is not loaded yet.

You're getting the Type Error because you're referencing search_span[0], but search_span[0] is undefined.

This works when you execute it in Dev Tools because the DOM is already loaded.

EditText edit = new EditText(this);

edit.setHorizontallyScrolling(true);
edit.setInputType(EditorInfo.TYPE_NUMBER_FLAG_SIGNED|EditorInfo.TYPE_CLASS_NUMBER);

Never try to edit to @_ variable!!!! They must be not touched.. Or you get some unsuspected effect. For example...

my $size=1234;
sub sub1{
  $_[0]=500;
}
sub1 $size;

Before call sub1 $size contain 1234. But after 500(!!) So you Don't edit this value!!! You may pass two or more values and change them in subroutine and all of them will be changed! I've never seen this effect described. Programs I've seen also leave @_ array readonly. And only that you may safely pass variable don't changed internal subroutine You must always do that:

sub sub2{
  my @m=@_;
  ....
}

assign @_ to local subroutine procedure variables and next worked with them. Also in some deep recursive algorithms that returun array you may use this approach to reduce memory used for local vars. Only if return @_ array the same.

If you did all and it didn't work again like mien, do this copy Image.py and ImageTk.py from /usr/lib/python3/dist-packages/PIL on ubuntu and C:/Users/yourComputerName/AppData/Local/Programs/Python/Python36/Lib/PIL on windows to your projects directory and just import them!

Install Composer

On Windows, you can use the Composer Windows Installer.