I believe this will accomplish the same result, without a subquery or a ranking function:

SELECT *
FROM emp
ORDER BY sal DESC
LIMIT 1
OFFSET 2

POSTMAN : A google chrome extension

Use postman to send message instead of server. Postman settings are as follows :

Request Type: POST

URL: https://android.googleapis.com/gcm/send

Header
  Authorization  : key=your key //Google API KEY
  Content-Type : application/json

JSON (raw) :
{       
  "registration_ids":["yours"],
  "data": {
    "Hello" : "World"
  } 
}

on success you will get

Response :
{
  "multicast_id": 6506103988515583000,
  "success": 1,
  "failure": 0,
  "canonical_ids": 0,
  "results": [
    {
      "message_id": "0:1432811719975865%54f79db3f9fd7ecd"
    }
  ]
}

Essentially, PHPStorm = WebStorm + PHP, SQL and more.

BUT (and this is a very important "but") because it is capable of parsing so much more, it quite often fails to parse Node.js dependencies, as they (probably) conflict with some other syntax it is capable of parsing.

The most notable example of that would be Mongoose model definition, where WebStorm easily recognizes mongoose.model method, whereas PHPStorm marks it as unresolved as soon as you connect Node.js plugin.

Surprisingly, it manages to resolve the method if you turn the plugin off, but leave the core modules connected, but then it cannot be used for debugging. And this happens to quite a few methods out there.

All this goes for PHPStorm 8.0.1, maybe in later releases this annoying bug would be fixed.

You need some form of iteration here, as val (except when called with a function) only works on the first element:

$("input[placeholder]").val($("input[placeholder]").attr("placeholder"));

should be:

$("input[placeholder]").each( function () {
    $(this).val( $(this).attr("placeholder") );
});

or

$("input[placeholder]").val(function() {
    return $(this).attr("placeholder");
});

I think this is the kind of question only a core developer could/should answer. I've researched and found the core ticket #17048: URLs delivered to the browser should be root-relative. Where we can find the reasons explained by Andrew Nacin, lead core developer. He also links to this [wp-hackers] thread. On both those links, these are the key quotes on why WP doesn't use relative URLs:

Core ticket:

• Root-relative URLs aren't really proper. /path/ might not be WordPress, it might be outside of the install. So really it's not much different than an absolute URL.

• Any relative URLs also make it significantly more difficult to perform transformations when the install is moved. The find-replace is going to be necessary in most situations, and having an absolute URL is ironically more portable for those reasons.

• absolute URLs are needed in numerous other places. Needing to add these in conditionally will add to processing, as well as introduce potential bugs (and incompatibilities with plugins).

[wp-hackers] thread

• Relative to what, I'm not sure, as WordPress is often in a subdirectory, which means we'll always need to process the content to then add in the rest of the path. This introduces overhead.

• Keep in mind that there are two types of relative URLs, with and without the leading slash. Both have caveats that make this impossible to properly implement.

• WordPress should (and does) store absolute URLs. This requires no pre-processing of content, no overhead, no ambiguity. If you need to relocate, it is a global find-replace in the database.

And, on a personal note, more than once I've found theme and plugins bad coded that simply break when WP_CONTENT_URL is defined.
They don't know this can be set and assume that this is true: WP.URL/wp-content/WhatEver, and it's not always the case. And something will break along the way.

The plugin Relative URLs (linked in edse's Answer), applies the function wp_make_link_relative in a series of filters in the action hook template_redirect. It's quite a simple code and seems a nice option.

I faced similar error message in Xamarin forms when sending request to webApi to get a Token,

• Make sure all keys (key : value) (ex.'username', 'password', 'grant_type') in the Json file are exactly what the webApi expecting, otherwise it fires this exception.

Unhandled Exception: Newtonsoft.Json.JsonReaderException: Unexpected character encountered while parsing value: <. Path '', line 0, position 0

For more general boolean functions that you would like to use as a filter and that depend on more than one column, you can use:

df = df[df[['col_1','col_2']].apply(lambda x: f(*x), axis=1)]

where f is a function that is applied to every pair of elements (x1, x2) from col_1 and col_2 and returns True or False depending on any condition you want on (x1, x2).

For gradle,

You can see this solution at: http://www.idanfridman.com/how-to-exclude-libraries-from-dependcies-using-gradle/

Just need add exclude in configurations:

configurations {
    providedRuntime
    compile.exclude(group: 'ch.qos.logback')
}

I was trying to format the date string received from a JSON response e.g. 2016-03-09T04:50:00-0800 to yyyy-MM-dd. So here's what I tried and it worked and helped me assign the formatted date string a calendar widget.

String DATE_FORMAT_I = "yyyy-MM-dd'T'HH:mm:ss";
String DATE_FORMAT_O = "yyyy-MM-dd";


SimpleDateFormat formatInput = new SimpleDateFormat(DATE_FORMAT_I);
SimpleDateFormat formatOutput = new SimpleDateFormat(DATE_FORMAT_O);

Date date = formatInput.parse(member.getString("date"));
String dateString = formatOutput.format(date);

This worked. Thanks.

I ran into this issue as well. I don't know the technical details of what was actually happening. However, in my situation, the root cause was that there was cascading deletes setup in the Oracle database and my JPA/Hibernate code was also trying to do the cascading delete calls. So my advice is to make sure that you know exactly what is happening.

In eclipse click on window>show view>console. Thats it. You are set to use console. Happy codding.

For another approach, you can wrap your tests in a function and use normal conditional checks at runtime to only execute them if you want.

#include <gtest/gtest.h>

const bool skip_some_test = true;

bool some_test_was_run = false;

void someTest() {
   EXPECT_TRUE(!skip_some_test);
   some_test_was_run = true;
}

TEST(BasicTest, Sanity) {
   EXPECT_EQ(1, 1);
   if(!skip_some_test) {
      someTest();
      EXPECT_TRUE(some_test_was_run);
   }
}

This is useful for me as I'm trying to run some tests only when a system supports dual stack IPv6.

Technically that dualstack stuff shouldn't really be a unit test as it depends on the system. But I can't really make any integration tests until I have tested they work anyway and this ensures that it won't report failures when it's not the codes fault.

As for the test of it I have stub objects that simulate a system's support for dualstack (or lack of) by constructing fake sockets.

The only downside is that the test output and the number of tests will change which could cause issues with something that monitors the number of successful tests.

You can also use ASSERT_* rather than EQUAL_*. Assert will about the rest of the test if it fails. Prevents a lot of redundant stuff being dumped to the console.

You can also use a circle as a marker icon, for example:

var oMarker = new google.maps.Marker({
    position: latLng,
    sName: "Marker Name",
    map: map,
    icon: {
        path: google.maps.SymbolPath.CIRCLE,
        scale: 8.5,
        fillColor: "#F00",
        fillOpacity: 0.4,
        strokeWeight: 0.4
    },
});

and then, if you want to change the marker dynamically (like on mouseover), you can, for example:

oMarker.setIcon({
            path: google.maps.SymbolPath.CIRCLE,
            scale: 10,
            fillColor: "#00F",
            fillOpacity: 0.8,
            strokeWeight: 1
        })

Actually, there are two foreign_key_checks variables: a global variable and a local (per session) variable. Upon connection, the session variable is initialized to the value of the global variable.
The command SET foreign_key_checks modifies the session variable.
To modify the global variable, use SET GLOBAL foreign_key_checks or SET @@global.foreign_key_checks.

Consult the following manual sections:
http://dev.mysql.com/doc/refman/5.7/en/using-system-variables.html
http://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html

to Make it look nice you can use little bootstrap help

@if(count($errors) > 0 )
<div class="alert alert-danger alert-dismissible fade show" role="alert">
    <button type="button" class="close" data-dismiss="alert" aria-label="Close">
        <span aria-hidden="true">&times;</span>
    </button>
    <ul class="p-0 m-0" style="list-style: none;">
        @foreach($errors->all() as $error)
        <li>{{$error}}</li>
        @endforeach
    </ul>
</div>
@endif

This is simple code. You can try it and grab the knowledge easily.

n = int(input('Enter integer : '))
    if n % 2 == 3`8huhubuiiujji`:
        print('digit entered is ODD')
    elif n % 2 == 0 and 2 < n < 5:
        print('EVEN AND in between [2,5]')
    elif n % 2 == 0 and 6 < n < 20:
        print('EVEN and in between [6,20]')
    elif n % 2 == 0 and n > 20:
       print('Even and greater than 20')

and so on...

Another way (not mentioned here yet) is with Flexbox.

Just set the following rules on the container div:

display: flex;
justify-content: center; /* align horizontal */
align-items: center; /* align vertical */

FIDDLE

div {_x000D_
  width: 200px;_x000D_
  height: 200px;_x000D_
  border: 1px solid green;_x000D_
  display: flex;_x000D_
  justify-content: center;_x000D_
  /* align horizontal */_x000D_
  align-items: center;_x000D_
  /* align vertical */_x000D_
}

<div>_x000D_
  <img src="http://lorempixel.com/50/50/food" alt="" />_x000D_
</div>

A good place to start with Flexbox to see some of it's features and get syntax for maximum browser support is flexyboxes

Also, browser support nowadays is quite good: caniuse

For cross-browser compatibility for display: flex and align-items, you can use the following:

display: -webkit-box;
display: -webkit-flex;
display: -moz-box;
display: -ms-flexbox;
display: flex;
-webkit-flex-align: center;
-ms-flex-align: center;
-webkit-align-items: center;
align-items: center;

Use the CSS pointer-events:none on fields you want to "disable" (possibly together with a greyed background) which allows the POST action, like:

<input type="text" class="disable">

.disable{
pointer-events:none;
background:grey;
}

Ref: https://developer.mozilla.org/en-US/docs/Web/CSS/pointer-events

You can change your approach slightly - use Console.ReadKey() to stop your app, but do your work in a background thread:

static void Main(string[] args)
{
    var myWorker = new MyWorker();
    myWorker.DoStuff();
    Console.WriteLine("Press any key to stop...");
    Console.ReadKey();
}

In the myWorker.DoStuff() function you would then invoke another function on a background thread (using Action<>() or Func<>() is an easy way to do it), then immediately return.

PHP file (name is upload.php)    

<?php
    // =============  File Upload Code d  ===========================================
    $target_dir = "uploaded/";

    $target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
    $uploadOk = 1;
    $imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);

    // Check if file already exists
    if (file_exists($target_file)) {
        echo "Sorry, file already exists.";
        $uploadOk = 0;
    }

     // Check file size -- Kept for 500Mb
    if ($_FILES["fileToUpload"]["size"] > 500000000) {
        echo "Sorry, your file is too large.";
        $uploadOk = 0;
    }

    // Allow certain file formats
    if($imageFileType != "wmv" && $imageFileType != "mp4" && $imageFileType != "avi" && $imageFileType != "MP4") {
        echo "Sorry, only wmv, mp4 & avi files are allowed.";
        $uploadOk = 0;
    }

    // Check if $uploadOk is set to 0 by an error
    if ($uploadOk == 0) {
        echo "Sorry, your file was not uploaded.";
    // if everything is ok, try to upload file
    } else {
        if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
            echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
        } else {
            echo "Sorry, there was an error uploading your file.";
        }
    }
    // ===============================================  File Upload Code u  ==========================================================


    // =============  Connectivity for DATABASE d ===================================
    $servername = "localhost";
    $username = "root";
    $password = "";
    $dbname = "test";

    // Create connection
    $conn = new mysqli($servername, $username, $password, $dbname);
    // Check connection
    if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
    } 
    else

    $vidname = $_FILES["fileToUpload"]["name"] . "";
    $vidsize = $_FILES["fileToUpload"]["size"] . "";
    $vidtype = $_FILES["fileToUpload"]["type"] . "";

    $sql = "INSERT INTO videos (name, size, type) VALUES ('$vidname','$vidsize','$vidtype')";

    if ($conn->query($sql) === TRUE) {} 
    else {
        echo "Error: " . $sql . "<br>" . $conn->error;
        }

    $conn->close();
    // =============  Connectivity for DATABASE u ===================================

    ?>

From the Mongo docs:

The $not operator only affects other operators and cannot check fields and documents independently. So, use the $not operator for logical disjunctions and the $ne operator to test the contents of fields directly.

Since you are testing the field directly $ne is the right operator to use here.

Edit:

A situation where you would like to use $not is:

db.inventory.find( { price: { $not: { $gt: 1.99 } } } )

That would select all documents where:

• The price field value is less than or equal to 1.99 or the price
• Field does not exist

While this is very likely to be lost at the bottom of so many answers, the top solutions here were not working for me.
As far as I could tell neither would any of the other answers have helped.

Situation:
In an HTML5 page I had a menu that was a nav element inside a header (not THE header but a header in another element).
I wanted the navigation to stick to the top once a user scrolled to it, but previous to this the header was absolute positioned (so I could have it overlay something else slightly).
The solutions above never triggered a change because .offsetTop was not going to change as this was an absolute positioned element. Additionally the .scrollTop property was simply the top of the top most element... that is to say 0 and always would be 0.
Any tests I performed utilizing these two (and same with getBoundingClientRect results) would not tell me if the top of the navigation bar ever scrolled to the top of the viewable page (again, as reported in console, they simply stayed the same numbers while scrolling occurred).

Solution
The solution for me was utilizing

window.visualViewport.pageTop

The value of the pageTop property reflects the viewable section of the screen, therefore allowing me to track where an element is in reference to the boundaries of the viewable area.

Probably unnecessary to say, anytime I am dealing with scrolling I expect to use this solution to programatically respond to movement of elements being scrolled.
Hope it helps someone else.
IMPORTANT NOTE: This appears to work in Chrome and Opera currently & definitely not in Firefox (6-2018)... until Firefox supports visualViewport I recommend NOT using this method, (and I hope they do soon... it makes a lot more sense than the rest).


UPDATE:
Just a note regarding this solution.
While I still find what I discovered to be very valuable for situations in which "...programmatically respond to movement of elements being scrolled." is applicable. The better solution for the problem that I had was to use CSS to set position: sticky on the element. Using sticky you can have an element stay at the top without using javascript (NOTE: there are times this will not work as effectively as changing the element to fixed but for most uses the sticky approach will likely be superior)

UPDATE01:
So I realized that for a different page I had a requirement where I needed to detect the position of an element in a mildly complex scrolling setup (parallax plus elements that scroll past as part of a message). I realized in that scenario that the following provided the value I utilized to determine when to do something:

  let bodyElement = document.getElementsByTagName('body')[0];
  let elementToTrack = bodyElement.querySelector('.trackme');
  trackedObjPos = elementToTrack.getBoundingClientRect().top;
  if(trackedObjPos > 264)
  {
    bodyElement.style.cssText = '';
  }

Hope this answer is more widely useful now.

just use abs for converting unsigned to signed in python

 a=-12
b=abs(a)
print(b)

Output: 12

I did it by using the following options:

/njh /njs /ndl /nc /ns

Note that the file name still displays, but that's fine for me.

For more information on robocopy, go to http://technet.microsoft.com/en-us/library/cc733145%28WS.10%29.aspx

java force indeed big endian : https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-2.html#jvms-2.11

Here is my dark theme (based on Darcula IntelliJ Theme):
https://github.com/mervick/Qt-Creator-Darcula

• You can use copy con to write a long text

• Example:

  C:\COPY CON [drive:][path][File name]

  .... Content

  F6

  1 file(s) is copied

What is the length of str array, and with how much 0s it is ending?

Let's find out:

int main() {
  char str[] = "Hello\0";
  int length = sizeof str / sizeof str[0];
  // "sizeof array" is the bytes for the whole array (must use a real array, not
  // a pointer), divide by "sizeof array[0]" (sometimes sizeof *array is used)
  // to get the number of items in the array
  printf("array length: %d\n", length);
  printf("last 3 bytes: %02x %02x %02x\n",
         str[length - 3], str[length - 2], str[length - 1]);
  return 0;
}

onBackPressed() is supported since: API Level 5

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if ((keyCode == KeyEvent.KEYCODE_BACK)) {
        onBackPressed();
    }
}

@Override
public void onBackPressed() {
    //this is only needed if you have specific things
    //that you want to do when the user presses the back button.
    /* your specific things...*/
    super.onBackPressed();   
}

Since Date implements Comparable<Date>, it is as easy as:

date1.compareTo(date2);

As the Comparable contract stipulates, it will return a negative integer/zero/positive integer if date1 is considered less than/the same as/greater than date2 respectively (ie, before/same/after in this case).

Note that Date has also .after() and .before() methods which will return booleans instead.

You need to put the arguments to pass ("/select etc") in the second parameter of the Start method.

It looks like github has a simple UI for creating branches. I opened the branch drop-down and it prompts me to "Find or create a branch ...". Type the name of your new branch, then click the "create" button that appears.

To retrieve your new branch from github, use the standard git fetch command.

I'm not sure this will help your underlying problem, though, since the underlying data being pushed to the server (the commit objects) is the same no matter what branch it's being pushed to.

I have seen various answers which say when I uninstalled this or that it worked. I think that the uninstall is probably just sorting out an issue in the registry, rather it being an issue with the particular application that is being uninstalled.

I have also seen cases of people saying kill the RDP task but I don't have that and I still have the error.

I have seen cases of people saying clear the clipboard in Excel, but that doesn't work for me - nor does changing the settings in the Clipboard.

I believe that the issue is that an application has a lock on the clipboard and that application is not releasing it. The clipboard is a shared resource, so that implies that each application has to get a lock on it before changing it and then release the lock once it has completed the change, however, it looks like sometimes the lock is not released.

I found that the following cured it. Close down all MS applications including IE and Outlook. Check Task Manager processes to make sure that they are all gone.

Then restart the application where you had the Copy and Paste issue and it will probably then work.

Regards

Paul Simon

function loadpage (page_request, containerid)
{
  var loading = document.getElementById ( "loading" ) ;

  // when connecting to server
  if ( page_request.readyState == 1 )
      loading.style.visibility = "visible" ;

  // when loaded successfully
  if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
  {
      document.getElementById(containerid).innerHTML=page_request.responseText ;
      loading.style.visibility = "hidden" ;
  }
}

Try to invoke your code from the dispatcher:

Application.Current.Dispatcher.Invoke((Action)delegate{
      // your code
});

Set Jquery in scope

$scope.$ = $;

and call in html

ng-click="$('#novoModelo').modal('show')"

For your interest, to do the same with double

double doubleVal = 1.745;
double doubleVal2 = 0.745;
doubleVal = Math.round(doubleVal * 100 + 0.005) / 100.0;
doubleVal2 = Math.round(doubleVal2 * 100 + 0.005) / 100.0;
System.out.println("bdTest: " + doubleVal); //1.75
System.out.println("bdTest1: " + doubleVal2);//0.75

or just

double doubleVal = 1.745;
double doubleVal2 = 0.745;
System.out.printf("bdTest: %.2f%n",  doubleVal);
System.out.printf("bdTest1: %.2f%n",  doubleVal2);

both print

bdTest: 1.75
bdTest1: 0.75

I prefer to keep code as simple as possible. ;)

As @mshutov notes, you need to add a little more to ensure that a half value always rounds up. This is because numbers like 265.335 are a little less than they appear.

Just use = IF(A1="Bla*","YES","NO"). When you insert the asterisk, it acts as a wild card for any amount of characters after the specified text.

The cause of this error can be traced from Illuminate\View\Compilers\Compiler.php

public function __construct(Filesystem $files, $cachePath)
{
    if (! $cachePath) {
        throw new InvalidArgumentException('Please provide a valid cache path.');
    }

    $this->files = $files;
    $this->cachePath = $cachePath;
}

The constructor is invoked by BladeCompiler in Illuminate\View\ViewServiceProvider

/**
 * Register the Blade engine implementation.
 *
 * @param  \Illuminate\View\Engines\EngineResolver  $resolver
 * @return void
 */
public function registerBladeEngine($resolver)
{
    // The Compiler engine requires an instance of the CompilerInterface, which in
    // this case will be the Blade compiler, so we'll first create the compiler
    // instance to pass into the engine so it can compile the views properly.
    $this->app->singleton('blade.compiler', function () {
        return new BladeCompiler(
            $this->app['files'], $this->app['config']['view.compiled']
        );
    });

    $resolver->register('blade', function () {
        return new CompilerEngine($this->app['blade.compiler']);
    });
}

So, tracing back further, the following code:

$this->app['config']['view.compiled']

is generally located in your /config/view.php, if you use the standard laravel structure.

<?php
return [
    /*
    |--------------------------------------------------------------------------
    | View Storage Paths
    |--------------------------------------------------------------------------
    |
    | Most templating systems load templates from disk. Here you may specify
    | an array of paths that should be checked for your views. Of course
    | the usual Laravel view path has already been registered for you.
    |
    */
    'paths' => [
        resource_path('views'),
    ],
    /*
    |--------------------------------------------------------------------------
    | Compiled View Path
    |--------------------------------------------------------------------------
    |
    | This option determines where all the compiled Blade templates will be
    | stored for your application. Typically, this is within the storage
    | directory. However, as usual, you are free to change this value.
    |
    */
    'compiled' => realpath(storage_path('framework/views')),
];

realpath(...) returns false, if the path does not exist. Thus, invoking

'Please provide a valid cache path.' error.

Therefore, to get rid of this error, what you can do is to ensure that

storage_path('framework/views')

or

/storage/framework/views

exists :)

background-image takes multiple values.

so a combination of just 1 color linear-gradient and css blend modes will do the trick.

.testclass {
    background-image: url("../images/image.jpg"), linear-gradient(rgba(0,0,0,0.5),rgba(0,0,0,0.5));
    background-blend-mode: overlay;
}

note that there is no support on IE/Edge for CSS blend-modes at all.

If you want to use this in a more general context, you should make sure, that the socket that you open also gets closed. So the check should be more like this:

import socket
from contextlib import closing

def check_socket(host, port):
    with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as sock:
        if sock.connect_ex((host, port)) == 0:
            print "Port is open"
        else:
            print "Port is not open"

Look at using the beautiful soup html parsing library.

http://www.crummy.com/software/BeautifulSoup/

You will do something like this:

import BeautifulSoup
soup = BeautifulSoup.BeautifulSoup(html)
for link in soup.findAll("a"):
    print link.get("href")

I have had a similar problem and I fixed it by adding the below repos in my pom.xml:

<repository>
    <id>org.springframework.maven.release</id>
    <name>Spring Maven Release Repository</name>
    <url>http://repo.springsource.org/libs-release-local</url>
    <releases><enabled>true</enabled></releases>
    <snapshots><enabled>false</enabled></snapshots>
</repository>
<!-- For testing against latest Spring snapshots -->
<repository>
    <id>org.springframework.maven.snapshot</id>
    <name>Spring Maven Snapshot Repository</name>
    <url>http://repo.springsource.org/libs-snapshot-local</url>
    <releases><enabled>false</enabled></releases>
    <snapshots><enabled>true</enabled></snapshots>
</repository>
<!-- For developing against latest Spring milestones -->
<repository>
    <id>org.springframework.maven.milestone</id>
    <name>Spring Maven Milestone Repository</name>
    <url>http://repo.springsource.org/libs-milestone-local</url>
    <snapshots><enabled>false</enabled></snapshots>
</repository>

For laravel 8:

Model::orderBy('id', 'desc')->withTrashed()->take(1)->first()->id

The resulting sql query:

Model::orderBy('id', 'desc')->withTrashed()->take(1)->toSql()

select * from "timetables" order by "id" desc limit 1

Michael Krelin's answer is close is not entirely safe, since it can be wrong in rare situations. The problem is that intervals in PostgreSQL do not have context with regards to things like daylight savings. Intervals store things internally as months, days, and seconds. Months aren't an issue in this case since subtracting two timestamps just use days and seconds but 'days' can be a problem.

If your subtraction involves daylight savings change-overs, a particular day might be considered 23 or 25 hours respectively. The interval will take that into account, which is useful for knowing the amount of days that passed in the symbolic sense but it would give an incorrect number of the actual hours that passed. Epoch on the interval will just multiply all days by 24 hours.

For example, if a full 'short' day passes and an additional hour of the next day, the interval will be recorded as one day and one hour. Which converted to epoch/3600 is 25 hours. But in reality 23 hours + 1 hour should be a total of 24 hours.

So the safer method is:

(EXTRACT(EPOCH FROM current_timestamp) - EXTRACT(EPOCH FROM somedate))/3600

As Michael mentioned in his follow-up comment, you'll also probably want to use floor() or round() to get the result as an integer value.

Why the RecyclerView has no onItemClickListener

The RecyclerView is a toolbox, in contrast of the old ListView it has less build in features and more flexibility. The onItemClickListener is not the only feature being removed from ListView. But it has lot of listeners and method to extend it to your liking, it's far more powerful in the right hands ;).

In my opinion the most complex feature removed in RecyclerView is the Fast Scroll. Most of the other features can be easily re-implemented.

If you want to know what other cool features RecyclerView added read this answer to another question.

Memory efficient - drop-in solution for onItemClickListener

This solution has been proposed by Hugo Visser, an Android GDE, right after RecyclerView was released. He made a licence-free class available for you to just drop in your code and use it.

It showcase some of the versatility introduced with RecyclerView by making use of RecyclerView.OnChildAttachStateChangeListener.

Edit 2019: kotlin version by me, java one, from Hugo Visser, kept below

Kotlin / Java

Create a file values/ids.xml and put this in it:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <item name="item_click_support" type="id" />
</resources>

then add the code below to your source

Kotlin

Usage:

recyclerView.onItemClick { recyclerView, position, v ->
    // do it
}

(it also support long item click and see below for another feature I've added).

implementation (my adaptation to Hugo Visser Java code):

typealias OnRecyclerViewItemClickListener = (recyclerView: RecyclerView, position: Int, v: View) -> Unit
typealias OnRecyclerViewItemLongClickListener = (recyclerView: RecyclerView, position: Int, v: View) -> Boolean

class ItemClickSupport private constructor(private val recyclerView: RecyclerView) {

    private var onItemClickListener: OnRecyclerViewItemClickListener? = null
    private var onItemLongClickListener: OnRecyclerViewItemLongClickListener? = null

    private val attachListener: RecyclerView.OnChildAttachStateChangeListener = object : RecyclerView.OnChildAttachStateChangeListener {
        override fun onChildViewAttachedToWindow(view: View) {
            // every time a new child view is attached add click listeners to it
            val holder = [email protected](view)
                    .takeIf { it is ItemClickSupportViewHolder } as? ItemClickSupportViewHolder

            if (onItemClickListener != null && holder?.isClickable != false) {
                view.setOnClickListener(onClickListener)
            }
            if (onItemLongClickListener != null && holder?.isLongClickable != false) {
                view.setOnLongClickListener(onLongClickListener)
            }
        }

        override fun onChildViewDetachedFromWindow(view: View) {

        }
    }

    init {
        // the ID must be declared in XML, used to avoid
        // replacing the ItemClickSupport without removing
        // the old one from the RecyclerView
        this.recyclerView.setTag(R.id.item_click_support, this)
        this.recyclerView.addOnChildAttachStateChangeListener(attachListener)
    }

    companion object {
        fun addTo(view: RecyclerView): ItemClickSupport {
            // if there's already an ItemClickSupport attached
            // to this RecyclerView do not replace it, use it
            var support: ItemClickSupport? = view.getTag(R.id.item_click_support) as? ItemClickSupport
            if (support == null) {
                support = ItemClickSupport(view)
            }
            return support
        }

        fun removeFrom(view: RecyclerView): ItemClickSupport? {
            val support = view.getTag(R.id.item_click_support) as? ItemClickSupport
            support?.detach(view)
            return support
        }
    }

    private val onClickListener = View.OnClickListener { v ->
        val listener = onItemClickListener ?: return@OnClickListener
        // ask the RecyclerView for the viewHolder of this view.
        // then use it to get the position for the adapter
        val holder = this.recyclerView.getChildViewHolder(v)
        listener.invoke(this.recyclerView, holder.adapterPosition, v)
    }

    private val onLongClickListener = View.OnLongClickListener { v ->
        val listener = onItemLongClickListener ?: return@OnLongClickListener false
        val holder = this.recyclerView.getChildViewHolder(v)
        return@OnLongClickListener listener.invoke(this.recyclerView, holder.adapterPosition, v)
    }

    private fun detach(view: RecyclerView) {
        view.removeOnChildAttachStateChangeListener(attachListener)
        view.setTag(R.id.item_click_support, null)
    }

    fun onItemClick(listener: OnRecyclerViewItemClickListener?): ItemClickSupport {
        onItemClickListener = listener
        return this
    }

    fun onItemLongClick(listener: OnRecyclerViewItemLongClickListener?): ItemClickSupport {
        onItemLongClickListener = listener
        return this
    }

}

/** Give click-ability and long-click-ability control to the ViewHolder */
interface ItemClickSupportViewHolder {
    val isClickable: Boolean get() = true
    val isLongClickable: Boolean get() = true
}

// Extension function
fun RecyclerView.addItemClickSupport(configuration: ItemClickSupport.() -> Unit = {}) = ItemClickSupport.addTo(this).apply(configuration)

fun RecyclerView.removeItemClickSupport() = ItemClickSupport.removeFrom(this)

fun RecyclerView.onItemClick(onClick: OnRecyclerViewItemClickListener) {
    addItemClickSupport { onItemClick(onClick) }
}
fun RecyclerView.onItemLongClick(onLongClick: OnRecyclerViewItemLongClickListener) {
    addItemClickSupport { onItemLongClick(onLongClick) }
}

(Remember you also need to add an XML file, see above this section)

Bonus feature of Kotlin version

Sometimes you do not want all the items of the RecyclerView to be clickable.

To handle this I've introduced the ItemClickSupportViewHolder interface that you can use on your ViewHolder to control which item is clickable.

Example:

class MyViewHolder(view): RecyclerView.ViewHolder(view), ItemClickSupportViewHolder {
    override val isClickable: Boolean get() = false
    override val isLongClickable: Boolean get() = false
}

Java

Usage:

ItemClickSupport.addTo(mRecyclerView)
        .setOnItemClickListener(new ItemClickSupport.OnItemClickListener() {
    @Override
    public void onItemClicked(RecyclerView recyclerView, int position, View v) {
        // do it
    }
});

(it also support long item click)

Implementation (comments added by me):

public class ItemClickSupport {
    private final RecyclerView mRecyclerView;
    private OnItemClickListener mOnItemClickListener;
    private OnItemLongClickListener mOnItemLongClickListener;
    private View.OnClickListener mOnClickListener = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (mOnItemClickListener != null) {
                // ask the RecyclerView for the viewHolder of this view.
                // then use it to get the position for the adapter
                RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
                mOnItemClickListener.onItemClicked(mRecyclerView, holder.getAdapterPosition(), v);
            }
        }
    };
    private View.OnLongClickListener mOnLongClickListener = new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            if (mOnItemLongClickListener != null) {
                RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
                return mOnItemLongClickListener.onItemLongClicked(mRecyclerView, holder.getAdapterPosition(), v);
            }
            return false;
        }
    };
    private RecyclerView.OnChildAttachStateChangeListener mAttachListener
            = new RecyclerView.OnChildAttachStateChangeListener() {
        @Override
        public void onChildViewAttachedToWindow(View view) {
            // every time a new child view is attached add click listeners to it
            if (mOnItemClickListener != null) {
                view.setOnClickListener(mOnClickListener);
            }
            if (mOnItemLongClickListener != null) {
                view.setOnLongClickListener(mOnLongClickListener);
            }
        }

        @Override
        public void onChildViewDetachedFromWindow(View view) {

        }
    };

    private ItemClickSupport(RecyclerView recyclerView) {
        mRecyclerView = recyclerView;
        // the ID must be declared in XML, used to avoid
        // replacing the ItemClickSupport without removing
        // the old one from the RecyclerView
        mRecyclerView.setTag(R.id.item_click_support, this);
        mRecyclerView.addOnChildAttachStateChangeListener(mAttachListener);
    }

    public static ItemClickSupport addTo(RecyclerView view) {
        // if there's already an ItemClickSupport attached
        // to this RecyclerView do not replace it, use it
        ItemClickSupport support = (ItemClickSupport) view.getTag(R.id.item_click_support);
        if (support == null) {
            support = new ItemClickSupport(view);
        }
        return support;
    }

    public static ItemClickSupport removeFrom(RecyclerView view) {
        ItemClickSupport support = (ItemClickSupport) view.getTag(R.id.item_click_support);
        if (support != null) {
            support.detach(view);
        }
        return support;
    }

    public ItemClickSupport setOnItemClickListener(OnItemClickListener listener) {
        mOnItemClickListener = listener;
        return this;
    }

    public ItemClickSupport setOnItemLongClickListener(OnItemLongClickListener listener) {
        mOnItemLongClickListener = listener;
        return this;
    }

    private void detach(RecyclerView view) {
        view.removeOnChildAttachStateChangeListener(mAttachListener);
        view.setTag(R.id.item_click_support, null);
    }

    public interface OnItemClickListener {

        void onItemClicked(RecyclerView recyclerView, int position, View v);
    }

    public interface OnItemLongClickListener {

        boolean onItemLongClicked(RecyclerView recyclerView, int position, View v);
    }
}

How it works (why it's efficient)

This class works by attaching a RecyclerView.OnChildAttachStateChangeListener to the RecyclerView. This listener is notified every time a child is attached or detached from the RecyclerView. The code use this to append a tap/long click listener to the view. That listener ask the RecyclerView for the RecyclerView.ViewHolder which contains the position.

This is more efficient then other solutions because it avoid creating multiple listeners for each view and keep destroying and creating them while the RecyclerView is being scrolled.

You could also adapt the code to give you back the holder itself if you need more.

Final remark

Keep in mind that it's COMPLETELY fine to handle it in your adapter by setting on each view of your list a click listener, like other answer proposed.

It's just not the most efficient thing to do (you create a new listener every time you reuse a view) but it works and in most cases it's not an issue.

It is also a bit against separation of concerns cause it's not really the Job of the Adapter to delegate click events.

When just a single result is needed, then no loop should be used. Just fetch the row right away.

• In case you need to fetch the entire row into associative array:

    $row = $result->fetch_assoc();
  

• in case you need just a single value

    $row = $result->fetch_row();
    $value = $row[0] ?? false;
  

The last example will return the first column from the first returned row, or false if no row was returned. It can be also shortened to a single line,

$value = $result->fetch_row()[0] ?? false;

Below are complete examples for different use cases

Variables to be used in the query

When variables are to be used in the query, then a prepared statement must be used. For example, given we have a variable $id:

$query = "SELECT ssfullname, ssemail FROM userss WHERE ud=?";
$stmt = $conn->prepare($query);
$stmt->bind_param("s", $id);
$stmt->execute()
$result = $stmt->get_result();
$row = $result->fetch_assoc();

// in case you need just a single value
$query = "SELECT count(*) FROM userss WHERE id=?";
$stmt = $conn->prepare($query);
$stmt->bind_param("s", $id);
$stmt->execute()
$result = $stmt->get_result();
$value = $result->fetch_row()[0] ?? false;

The detailed explanation of the above process can be found in my article. As to why you must follow it is explained in this famous question

No variables in the query

In your case, where no variables to be used in the query, you can use the query() method:

$query = "SELECT ssfullname, ssemail FROM userss ORDER BY ssid";
$result = $conn->query($query);
// in case you need an array
$row = $result->fetch_assoc();
// OR in case you need just a single value
$value = $result->fetch_row()[0] ?? false;

By the way, although using raw API while learning is okay, consider using some database abstraction library or at least a helper function in the future:

// using a helper function
$sql = "SELECT email FROM users WHERE id=?";
$value = prepared_select($conn, $sql, [$id])->fetch_row[0] ?? false;

// using a database helper class
$email = $db->getCol("SELECT email FROM users WHERE id=?", [$id]);

As you can see, although a helper function can reduce the amount of code, a class' method could encapsulate all the repetitive code inside, making you to write only meaningful parts - the query, the input parameters and the desired result format (in the form of the method's name).

for i=1,#target do
    game.Players.target[i].Character:BreakJoints()
end

Is incorrect, if "target" contains "FakeNameHereSoNoStalkers" then the run code would be:

game.Players.target.1.Character:BreakJoints()

Which is completely incorrect.

c = game.Players:GetChildren()

Never use "Players:GetChildren()", it is not guaranteed to return only players.

Instead use:

c = Game.Players:GetPlayers()

if msg:lower()=="me" then
    table.insert(people, source)
    return people

Here you add the player's name in the list "people", where you in the other places adds the player object.

Fixed code:

local Admins = {"FakeNameHereSoNoStalkers"}

function Kill(Players)
    for i,Player in ipairs(Players) do
        if Player.Character then
            Player.Character:BreakJoints()
        end
    end
end

function IsAdmin(Player)
    for i,AdminName in ipairs(Admins) do
        if Player.Name:lower() == AdminName:lower() then return true end
    end
    return false
end

function GetPlayers(Player,Msg)
    local Targets = {}
    local Players = Game.Players:GetPlayers()

    if Msg:lower() == "me" then
        Targets = { Player }
    elseif Msg:lower() == "all" then
        Targets = Players
    elseif Msg:lower() == "others" then
        for i,Plr in ipairs(Players) do
            if Plr ~= Player then
                table.insert(Targets,Plr)
            end
        end
    else
        for i,Plr in ipairs(Players) do
            if Plr.Name:lower():sub(1,Msg:len()) == Msg then
                table.insert(Targets,Plr)
            end
        end
    end
    return Targets
end

Game.Players.PlayerAdded:connect(function(Player)
    if IsAdmin(Player) then
        Player.Chatted:connect(function(Msg)
            if Msg:lower():sub(1,6) == ":kill " then
                Kill(GetPlayers(Player,Msg:sub(7)))
            end
        end)
    end
end)

"As long as two databases are on the same file system, you can use RENAME TABLE to move a table from one database to another"

-- ensure the char set and collate match the existing database.
SHOW VARIABLES LIKE 'character_set_database';
SHOW VARIABLES LIKE 'collation_database';


CREATE DATABASE `database2` DEFAULT CHARACTER SET = `utf8` DEFAULT COLLATE = `utf8_general_ci`;
RENAME TABLE `database1`.`table1` TO `database2`.`table1`;
RENAME TABLE `database1`.`table2` TO `database2`.`table2`;
RENAME TABLE `database1`.`table3` TO `database2`.`table3`;

http://dev.mysql.com/doc/refman/5.7/en/rename-table.html

important: in this kind of error you should look for simple mistakes in most cases

besides syntax error, I should say once I had same problem and it was because of bad name I have chosen for function. I have never searched for the reason but I remember that I copied another function and change it to use. I add "1" after the name to changed the function name and I got this error.

You can make an extension of UIImageView.

Swift 2.0

import Foundation
import UIKit

extension UIImageView
{
    func makeBlurImage(targetImageView:UIImageView?)
    {
        let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.Dark)
        let blurEffectView = UIVisualEffectView(effect: blurEffect)
        blurEffectView.frame = targetImageView!.bounds

        blurEffectView.autoresizingMask = [.FlexibleWidth, .FlexibleHeight] // for supporting device rotation
        targetImageView?.addSubview(blurEffectView)
    }
}

Usage:

override func viewDidLoad()
{
    super.viewDidLoad()

    let sampleImageView = UIImageView(frame: CGRectMake(0, 200, 300, 325))
    let sampleImage:UIImage = UIImage(named: "ic_120x120")!
    sampleImageView.image =  sampleImage

    //Convert To Blur Image Here
    sampleImageView.makeBlurImage(sampleImageView)

    self.view.addSubview(sampleImageView)
}

Swift 3 Extension

import Foundation
import UIKit

extension UIImageView
{
    func addBlurEffect()
    {
        let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.light)
        let blurEffectView = UIVisualEffectView(effect: blurEffect)
        blurEffectView.frame = self.bounds

        blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight] // for supporting device rotation
        self.addSubview(blurEffectView)
    }
}

Usage:

yourImageView.addBlurEffect()

Addendum:

extension UIView {
  
  /// Remove UIBlurEffect from UIView
  func removeBlurEffect() {
    let blurredEffectViews = self.subviews.filter{$0 is UIVisualEffectView}
    blurredEffectViews.forEach{ blurView in
      blurView.removeFromSuperview()
    }
  }

Swift 5.0:

import UIKit


extension UIImageView {
    func applyBlurEffect() {
        let blurEffect = UIBlurEffect(style: .light)
        let blurEffectView = UIVisualEffectView(effect: blurEffect)
        blurEffectView.frame = bounds
        blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        addSubview(blurEffectView)
    }
}

Excel has no way of gathering that attribute with it's built-in functions. If you're willing to use some VB, all your color-related questions are answered here:

http://www.cpearson.com/excel/colors.aspx

Example form the site:

The SumColor function is a color-based analog of both the SUM and SUMIF function. It allows you to specify separate ranges for the range whose color indexes are to be examined and the range of cells whose values are to be summed. If these two ranges are the same, the function sums the cells whose color matches the specified value. For example, the following formula sums the values in B11:B17 whose fill color is red.

=SUMCOLOR(B11:B17,B11:B17,3,FALSE)

Here's my suggestion:

function toCamelCase(string) {
  return `${string}`
    .replace(new RegExp(/[-_]+/, 'g'), ' ')
    .replace(new RegExp(/[^\w\s]/, 'g'), '')
    .replace(
      new RegExp(/\s+(.)(\w+)/, 'g'),
      ($1, $2, $3) => `${$2.toUpperCase() + $3.toLowerCase()}`
    )
    .replace(new RegExp(/\s/, 'g'), '')
    .replace(new RegExp(/\w/), s => s.toLowerCase());
}

or

String.prototype.toCamelCase = function() {
  return this
    .replace(new RegExp(/[-_]+/, 'g'), ' ')
    .replace(new RegExp(/[^\w\s]/, 'g'), '')
    .replace(
      new RegExp(/\s+(.)(\w+)/, 'g'),
      ($1, $2, $3) => `${$2.toUpperCase() + $3.toLowerCase()}`
    )
    .replace(new RegExp(/\s/, 'g'), '')
    .replace(new RegExp(/\w/), s => s.toLowerCase());
};

Test cases:

describe('String to camel case', function() {
  it('should return a camel cased string', function() {
    chai.assert.equal(toCamelCase('foo bar'), 'fooBar');
    chai.assert.equal(toCamelCase('Foo Bar'), 'fooBar');
    chai.assert.equal(toCamelCase('fooBar'), 'fooBar');
    chai.assert.equal(toCamelCase('FooBar'), 'fooBar');
    chai.assert.equal(toCamelCase('--foo-bar--'), 'fooBar');
    chai.assert.equal(toCamelCase('__FOO_BAR__'), 'fooBar');
    chai.assert.equal(toCamelCase('!--foo-¿?-bar--121-**%'), 'fooBar121');
  });
});

Solution posted by Denys S. in the question post:

I quite messed it up with c to c++ conversion (basically env variable stuff), but I got it working with the following code for C++:

#include <string.h>
#include <stdio.h>
#include <jni.h>

jstring Java_the_package_MainActivity_getJniString( JNIEnv* env, jobject obj){

    jstring jstr = (*env)->NewStringUTF(env, "This comes from jni.");
    jclass clazz = (*env)->FindClass(env, "com/inceptix/android/t3d/MainActivity");
    jmethodID messageMe = (*env)->GetMethodID(env, clazz, "messageMe", "(Ljava/lang/String;)Ljava/lang/String;");
    jobject result = (*env)->CallObjectMethod(env, obj, messageMe, jstr);

    const char* str = (*env)->GetStringUTFChars(env,(jstring) result, NULL); // should be released but what a heck, it's a tutorial :)
    printf("%s\n", str);

    return (*env)->NewStringUTF(env, str);
}

And next code for java methods:

    public class MainActivity extends Activity {
    private static String LIB_NAME = "thelib";

    static {
        System.loadLibrary(LIB_NAME);
    }

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        TextView tv = (TextView) findViewById(R.id.textview);
        tv.setText(this.getJniString());
    }

    // please, let me live even though I used this dark programming technique
    public String messageMe(String text) {
        System.out.println(text);
        return text;
    }

    public native String getJniString();
}

It took me a while to find out what is going on, but here is the summary. I hope this save people a lot of time.

Apple are not playing nice with Wi-Fi Direct, not in the same way that Android is. The Multipeer Connectivity Framework that Apple provides combines both BLE and WiFi Direct together and will only work with Apple devices and not any device that is using Wi-Fi Direct.

https://developer.apple.com/library/ios/documentation/MultipeerConnectivity/Reference/MultipeerConnectivityFramework/index.html

It states the following in this documentation - "The Multipeer Connectivity framework provides support for discovering services provided by nearby iOS devices using infrastructure Wi-Fi networks, peer-to-peer Wi-Fi, and Bluetooth personal area networks and subsequently communicating with those services by sending message-based data, streaming data, and resources (such as files)."

Additionally, Wi-Fi direct in this mode between i-Devices will need iPhone 5 and above.

There are apps that use a form of Wi-Fi Direct on the App Store, but these are using their own libraries.

If you really don't care about which timestamp you'll get and your v_id is always the same for a given m_i you can do the following:

select m_id, v_id, max(timestamp) from table
group by m_id, v_id
order by timestamp desc

Now, if the v_id changes for a given m_id then you should do the following

select t1.* from table t1
left join table t2 on t1.m_id = t2.m_id and t1.timestamp < t2.timestamp
where t2.timestamp is null
order by t1.timestamp desc

There are a few solutions to resolve this problem. To avoid creating .DS_Store files, do not to use the OS X Finder to view folders. An alternative way to view folders is to use UNIX command line. To remove the .DS_Store files a third-party product called DS_Store Terminator can be used. To delete the .DS_Store files from the entire system a UNIX shell command can be used. Launch Terminal from Applications:Utilities At the UNIX shell prompt enter the following UNIX command: sudo find / -name ".DS_Store" -depth -exec rm {} \; When prompted for a password enter the Mac OS X Administrator password.

This command is to find and remove all occurrences of .DS_Store starting from the root (/) of the file system through the entire machine. To configure this command to run as a scheduled task follow the steps below: Launch Terminal from Applications:Utilities At the UNIX shell prompt enter the following UNIX command:

sudo crontab -e When prompted for a password enter the Mac OS X Administrator password. Once in the vi editor press the letter I on your keyboard once and enter the following:

15 1 * * * root find / -name ".DS_Store" -depth -exec rm {} \;

This is called crontab entry, which has the following format:

Minute Hour DayOfMonth Month DayOfWeek User Command.

The crontab entry means that the command will be executed by the system automatically at 1:15 AM everyday by the account called root.

The command starts from find all the way to . If the system is not running this command will not get executed.

To save the entry press the Esc key once, then simultaneously press Shift + z+ z.

Note: Information in Step 4 is for the vi editor only.

My solution is:

import threading, time

def a():
    t = threading.currentThread()
    while getattr(t, "do_run", True):
    print('Do something')
    time.sleep(1)

def getThreadByName(name):
    threads = threading.enumerate() #Threads list
    for thread in threads:
        if thread.name == name:
            return thread

threading.Thread(target=a, name='228').start() #Init thread
t = getThreadByName('228') #Get thread by name
time.sleep(5)
t.do_run = False #Signal to stop thread
t.join()

If you have access to PHP 5.3, the intl extension is very nice for doing things like this.

Here's an example from the manual:

$fmt = new IntlDateFormatter( "en_US" ,IntlDateFormatter::FULL, IntlDateFormatter::FULL,
    'America/Los_Angeles',IntlDateFormatter::GREGORIAN  );
$fmt->format(0); //0 for current time/date

In your case, you can do:

$fmt = new IntlDateFormatter( "en_US" ,IntlDateFormatter::FULL, IntlDateFormatter::FULL,
        'America/New_York');
 $fmt->format($datetime); //where $datetime may be a DateTime object, an integer representing a Unix timestamp value (seconds since epoch, UTC) or an array in the format output by localtime(). 

As you can set a Timezone such as America/New_York, this is much better than using a GMT or UTC offset, as this takes into account the day light savings periods as well.

Finaly, as the intl extension uses ICU data, which contains a lot of very useful features when it comes to creating your own date/time formats.

Yes, you can enforce the constraint only when the value is not NULL. This can be easily tested with the following example:

CREATE DATABASE t;
USE t;

CREATE TABLE parent (id INT NOT NULL,
                     PRIMARY KEY (id)
) ENGINE=INNODB;

CREATE TABLE child (id INT NULL, 
                    parent_id INT NULL,
                    FOREIGN KEY (parent_id) REFERENCES parent(id)
) ENGINE=INNODB;


INSERT INTO child (id, parent_id) VALUES (1, NULL);
-- Query OK, 1 row affected (0.01 sec)


INSERT INTO child (id, parent_id) VALUES (2, 1);

-- ERROR 1452 (23000): Cannot add or update a child row: a foreign key 
-- constraint fails (`t/child`, CONSTRAINT `child_ibfk_1` FOREIGN KEY
-- (`parent_id`) REFERENCES `parent` (`id`))

The first insert will pass because we insert a NULL in the parent_id. The second insert fails because of the foreign key constraint, since we tried to insert a value that does not exist in the parent table.

There is a solution to use Web Workers (as mentioned before), because they run in separate process and are not slowed down

I've written a tiny script that can be used without changes to your code - it simply overrides functions setTimeout, clearTimeout, setInterval, clearInterval.

Just include it before all your code.

more info here

The problem is the ssl certificate on server side. Either something is interfering or the certificate doesn't match the service. For instance when a site has a ssl cert for www.mydomain.com while the service you use runs on myservice.mydomain.com. That is a different machine.

If you are asking about cache where eclipse stores your project and workspace information right click on your project(s) and choose refresh. Then go to project in the menu on top of the window and click "clean".

This typically does what you need.

If it does not try to remove project from the workspace (just press "delete" on the project and then say that you DO NOT want to remove the sources). Then open project again.

If this does not work too, do the same with the workspace. If this still does not work, perform fresh checkout of your project from source control and create new workspace.

Well, this should work.

After struggling with this thing for WAY too long, here is the super easy solution.

My controller was looking for

@RequestBody List<String> ids

and I had the request body as

{
    "ids": [
        "1234",
        "5678"
     ]
}

and the solution was to change the body simply to

["1234", "5678"]

Yup. Just that easy.

The dplyr package contains summarise_all for this aim:

library(dplyr)
# summarise_all was replaced with the summarise(acrosss(..)) syntax dplyr >=1.00
df %>% group_by(grp) %>% summarise(across(everything(), list(mean)))
#> # A tibble: 3 x 5
#>     grp     a     b     c     d
#>   <int> <dbl> <dbl> <dbl> <dbl>
#> 1     1  3.08  2.98  2.98  2.91
#> 2     2  3.03  3.04  2.97  2.87
#> 3     3  2.85  2.95  2.95  3.06

Alternatively, the purrrlyr package provides the same functionality:

library(purrrlyr)
df %>% slice_rows("grp") %>% dmap(mean)
#> # A tibble: 3 x 5
#>     grp     a     b     c     d
#>   <int> <dbl> <dbl> <dbl> <dbl>
#> 1     1  3.08  2.98  2.98  2.91
#> 2     2  3.03  3.04  2.97  2.87
#> 3     3  2.85  2.95  2.95  3.06

Also don't forget about data.table (use keyby to sort sort groups):

library(data.table)
setDT(df)[, lapply(.SD, mean), keyby = grp]
#>    grp        a        b        c        d
#> 1:   1 3.079412 2.979412 2.979412 2.914706
#> 2:   2 3.029126 3.038835 2.967638 2.873786
#> 3:   3 2.854701 2.948718 2.951567 3.062678

Let's try to compare performance.

library(dplyr)
library(purrrlyr)
library(data.table)
library(bench)
set.seed(123)
n <- 10000
df <- data.frame(
  a = sample(1:5, n, replace = TRUE), 
  b = sample(1:5, n, replace = TRUE), 
  c = sample(1:5, n, replace = TRUE), 
  d = sample(1:5, n, replace = TRUE), 
  grp = sample(1:3, n, replace = TRUE)
)
dt <- setDT(df)
mark(
  dplyr = df %>% group_by(grp) %>% summarise(across(everything(), list(mean))),
  purrrlyr = df %>% slice_rows("grp") %>% dmap(mean),
  data.table = dt[, lapply(.SD, mean), keyby = grp],
  check = FALSE
)
#> # A tibble: 3 x 6
#>   expression      min   median `itr/sec` mem_alloc `gc/sec`
#>   <bch:expr> <bch:tm> <bch:tm>     <dbl> <bch:byt>    <dbl>
#> 1 dplyr        2.81ms   2.85ms      328.        NA     17.3
#> 2 purrrlyr     7.96ms   8.04ms      123.        NA     24.5
#> 3 data.table 596.33µs 707.91µs     1409.        NA     10.3

Use rgba as most of the commonly used browsers supports it..

.social img:hover {
 background-color: rgba(0, 0, 0, .5)
}

C is the bare-bones, simple, clean language that makes you do everything yourself. It doesn't hold your hand, it doesn't stop you from shooting yourself in the foot. But it has everything you need to do what you want.

C++ is C with classes added, and then a whole bunch of other things, and then some more stuff. It doesn't hold your hand, but it'll let you hold your own hand, with add-on GC, or RAII and smart-pointers. If there's something you want to accomplish, chances are there's a way to abuse the template system to give you a relatively easy syntax for it. (moreso with C++0x). This complexity also gives you the power to accidentally create a dozen instances of yourself and shoot them all in the foot.

C# is Microsoft's stab at improving on C++ and Java. Tons of syntactical features, but no where near the complexity of C++. It runs in a full managed environment, so memory management is done for you. It does let you "get dirty" and use unsafe code if you need to, but it's not the default, and you have to do some work to shoot yourself.

As long as checker is not null, you may use !checker as posted. This is possible since Java 5, because this Boolean variable will be autoboxed to the primivite boolean value.

You can do it this with two replace's

//let stw be "John Smith $100,000.00 M"

sb_trim = Regex.Replace(stw, @"\s+\$|\s+(?=\w+$)", ",");
//sb_trim becomes "John Smith,100,000.00,M"

sb_trim = Regex.Replace(sb_trim, @"(?<=\d),(?=\d)|[.]0+(?=,)", "");
//sb_trim becomes "John Smith,100000,M"

sw.WriteLine(sb_trim);

You can also try this

Private Declare Function GetWindowText Lib "user32.dll" (ByVal hwnd As IntPtr, ByVal lpString As StringBuilder, ByVal cch As Integer) As Integer

I always use Declare Function instead of DllImport... Its more simply, its shorter and does the same

$wpdb->get_results("SELECT ...", ARRAY_A);

ARRAY_A is a "output_type" argument. It can be one of four pre-defined constants (defaults to OBJECT):

OBJECT - result will be output as a numerically indexed array of row objects.
OBJECT_K - result will be output as an associative array of row objects, using first columns values as keys (duplicates will be discarded).
ARRAY_A - result will be output as an numerically indexed array of associative arrays, using column names as keys.
ARRAY_N - result will be output as a numerically indexed array of numerically indexed arrays.  

See: http://codex.wordpress.org/Class_Reference/wpdb

Please note that using StringFormat in Bindings only seems to work for "text" properties. Using this for Label.Content will not work

Send a POST request with content type = 'form-data':

import requests
files = {
    'username': (None, 'myusername'),
    'password': (None, 'mypassword'),
}
response = requests.post('https://example.com/abc', files=files)

def func(*args): 
    pass

When you define a function this way, *args will be array of arguments passed to the function. This allows your function to work without knowing ahead of time how many arguments are going to be passed to it.

You do this with keyword arguments too, using **kwargs:

def func2(**kwargs): 
    pass

See: Arbitrary argument lists

In your case, you've defined a class which is acting like a dictionary. The dict.pop method is defined as pop(key[, default]).

Your method doesn't use the default parameter. But, by defining your method with *args and passing *args to dict.pop(), you are allowing the caller to use the default parameter.

In other words, you should be able to use your class's pop method like dict.pop:

my_a = a()
value1 = my_a.pop('key1')       # throw an exception if key1 isn't in the dict
value2 = my_a.pop('key2', None) # return None if key2 isn't in the dict

Just a small detail that I think is missing in above answers.

If your child activity can be opened from multiple parent activities then you can check if you need to do setResult or not, based on if your activity was opened by startActivity or startActivityForResult. You can achieve this by using getCallingActivity(). More info here.

If you have https server, change your url to use https:// protocol.

I got into similar issue with this one. My url has http:// protocol and I want to make a POST request, but the server wants to redirect it to https. What happen is that, turns out to be node http behavior sends the redirect request (next) in GET method which is not the case.

What I did is to change my url to https:// protocol and it works.

The new constraint is fine, but if you need T being a value type too, use this:

protected T GetObject() {
    if (typeof(T).IsValueType || typeof(T) == typeof(string)) {
        return default(T);
    } else {
       return (T)Activator.CreateInstance(typeof(T));
    }
}

Try this

SELECT DATEDIFF(DAY,  DATEADD(day, -1, '2013-03-13 00:00:00.000'), GETDATE())

OR

SELECT DATEDIFF(DAY,  DATEADD(day, -1, @CreatedDate), GETDATE())

An HTTP message may have a body of data sent after the header lines. In a response, this is where the requested resource is returned to the client (the most common use of the message body), or perhaps explanatory text if there's an error. In a request, this is where user-entered data or uploaded files are sent to the server.

http://www.tutorialspoint.com/http/http_messages.htm

devnull is right;

sudo update-alternatives --config x-terminal-emulator

works. See here and here, and some comments in here.

git pull origin master --allow-unrelated-histories

You might want to use this if your histories doesnt match and want to merge it anyway..

refer here

if you are looking to change the colour of the cell in case of vlookup error then go for conditional formatting . To do this go the "CONDITIONAL FORMATTING" > "NEW RULE". In this choose the "Select the rule type" = "Format only cells that contains" . After this the window below changes , in which choose "Error" in the first drop-down .After this proceed accordingly.

For your question as asked

Columns(3).Insert
Range("c1:c4") = Application.Transpose(Array("Loc", "uk", "us", "nj"))

If you had a way of automatically looking up the data (ie matching uk against employer id) then you could do that in VBA

The possible reason is the context of the alert dialog. You may be finished that activity so its trying to open in that context but which is already closed. Try changing the context of that dialog to you first activity beacause it won't be finished till the end.

e.g

rather than this.

AlertDialog alertDialog = new AlertDialog.Builder(this).create();

try to use

AlertDialog alertDialog = new AlertDialog.Builder(FirstActivity.getInstance()).create();

You can use the following method to get the width and height of the view, For example,

int height = yourView.getLayoutParams().height;
int width = yourView.getLayoutParams().width;

This gives the converted value of the view which specified in the XML layout.

Say if the specified value for height is 53dp in XML, you will get the converted value in integer as 80.

<script type="text/javascript">
function iframeDidLoad() {
    alert('Done');
}

function newSite() {
    var sites = ['http://getprismatic.com',
                 'http://gizmodo.com/',
                 'http://lifehacker.com/']

    document.getElementById('myIframe').src = sites[Math.floor(Math.random() * sites.length)];
}    
</script>
<input type="button" value="Change site" onClick="newSite()" />
<iframe id="myIframe" src="http://getprismatic.com/" onLoad="iframeDidLoad();"></iframe>

Example at http://jsfiddle.net/MALuP/

There's a BeyondCompare plugin as well. It opens the 2 files in a BeyondCompare window. Pretty convenient to open files from the sublime window.

You will need BC3 installation present in the system. After installing the plugin, you will have to provide the path to the installation.

Example:

{
    //Define a custom path to beyond compare
    "beyond_compare_path": "G:/Softwares/Beyond Compare 3/BCompare.exe"
}

import time

import datetime

def Local2UTC(LocalTime):

    EpochSecond = time.mktime(LocalTime.timetuple())
    utcTime = datetime.datetime.utcfromtimestamp(EpochSecond)

    return utcTime

>>> LocalTime = datetime.datetime.now()

>>> UTCTime = Local2UTC(LocalTime)

>>> LocalTime.ctime()

'Thu Feb  3 22:33:46 2011'

>>> UTCTime.ctime()

'Fri Feb  4 05:33:46 2011'

Shutdown(1) , forces the socket no to send any more data

This is usefull in

1- Buffer flushing

2- Strange error detection

3- Safe guarding

Let me explain more , when you send a data from A to B , it's not guaranteed to be sent to B , it's only guaranteed to be sent to the A os buffer , which in turn sends it to the B os buffer

So by calling shutdown(1) on A , you flush A's buffer and an error is raised if the buffer is not empty ie: data has not been sent to the peer yet

Howoever this is irrevesable , so you can do that after you completely sent all your data and you want to be sure that it's atleast at the peer os buffer

I disagree that .form-group should be within .col-*-n elements. In my experience, all the appropriate padding happens automatically when you use .form-group like .row within a form.

<div class="form-group">
    <div class="col-sm-12">
        <label for="user_login">Username</label>
        <input class="form-control" id="user_login" name="user[login]" required="true" size="30" type="text" />
    </div>
</div>

Check out this demo.

Altering the demo slightly by adding .form-horizontal to the form tag changes some of that padding.

<form action="#" method="post" class="form-horizontal">

Check out this demo.

When in doubt, inspect in Chrome or use Firebug in Firefox to figure out things like padding and margins. Using .row within the form fails in edsioufi's fiddle because .row uses negative left and right margins thereby drawing the horizontal bounds of the divs classed .row beyond the bounds of the containing fieldsets.

You can use an external library like PMAlertController without using workaround, where you can substitute Apple's uncustomizable UIAlertController with a super customizable alert.

Compatible with Xcode 8, Swift 3 and Objective-C

Features:

• [x] Header View
• [x] Header Image (Optional)
• [x] Title
• [x] Description message
• [x] Customizations: fonts, colors, dimensions & more
• [x] 1, 2 buttons (horizontally) or 3+ buttons (vertically)
• [x] Closure when a button is pressed
• [x] Text Fields support
• [x] Similar implementation to UIAlertController
• [x] Cocoapods
• [x] Carthage
• [x] Animation with UIKit Dynamics
• [x] Objective-C compatibility
• [x] Swift 2.3 & Swift 3 support

Sms Intent :

Intent intent = new Intent("android.intent.action.VIEW");
        /** creates an sms uri */
        Uri data = Uri.parse("sms:");
        intent.setData(data);

1. Open web.config in the directory where the old pages reside

2. Then add code for the old location path and new destination as follows:

   <configuration>
     <location path="services.htm">
       <system.webServer>
         <httpRedirect enabled="true" destination="http://domain.com/services" httpResponseStatus="Permanent" />
       </system.webServer>
     </location>
     <location path="products.htm">
       <system.webServer>
         <httpRedirect enabled="true" destination="http://domain.com/products" httpResponseStatus="Permanent" />
       </system.webServer>
     </location>
   </configuration>
   

You may add as many location paths as necessary.

Just clone the same project in another folder and copy the .git/ folder to your project.

Example

Create temp folder:

mkdir temp

switch to temp folder

cd temp/

clone the same project in the temp folder:

git clone [-b branchName] git@path_to_your_git_repository

copy .git folder to your projet:

cp -R .git/ path/to/your/project/

switch to your project and run git status

delete the temp folder if your are finished.

hope this will help someone

This has been an old question but solution is very simple to that. If you are ever unsure about how to write criterias, joins etc in hibernate then best way is using native queries. This doesn't slow the performance and very useful. Eq. below

    @Query(nativeQuery = true, value = "your sql query")
returnTypeOfMethod methodName(arg1, arg2);

Using System.Web.HttpContext.Current.User.Identity.Name should work. Please check the IIS Site settings on the server that is hosting your site by doing the following:

1. Go to IIS ? Sites ? Your Site ? Authentication

   

2. Now check that Anonymous Access is Disabled & Windows Authentication is Enabled.

   

3. Now System.Web.HttpContext.Current.User.Identity.Name should return something like this:

   domain\username

There are two ways to delete a stash:

1. If you no longer need a particular stash, you can delete it with: $ git stash drop <stash_id>.
2. You can delete all of your stashes from the repo with: $ git stash clear.

Use both of them with caution, it maybe is difficult to revert the once deleted stashes.

Here is the reference article.

In my case it was:

/etc/init.d/redismaster stop
/etc/init.d/redismaster start

To find out what is your service name, you can run:

sudo updatedb
locate redis

And it will show you every Redis files in your system.

Please try the following code

Uri.fromFile(new File("/sdcard/sample.jpg"))

private String convertToString(java.sql.Clob data)
{
    final StringBuilder builder= new StringBuilder();

    try
    {
        final Reader         reader = data.getCharacterStream();
        final BufferedReader br     = new BufferedReader(reader);

        int b;
        while(-1 != (b = br.read()))
        {
            builder.append((char)b);
        }

        br.close();
    }
    catch (SQLException e)
    {
        log.error("Within SQLException, Could not convert CLOB to string",e);
        return e.toString();
    }
    catch (IOException e)
    {
        log.error("Within IOException, Could not convert CLOB to string",e);
        return e.toString();
    }
    //enter code here
    return builder.toString();
}

I put the heading inside the ul. There's no rule that says UL must contain only LI elements.

try this

<c:forEach items="${list}" var="map">
    <tr>
        <c:forEach items="${map}" var="entry">

            <td>${entry.value}</td>

        </c:forEach>
    </tr>
</c:forEach>

Also possible by looking for substring with index() function:

awk '(index($3, "snow") != 0) {print}' dummy_file

Shorter version:

awk 'index($3, "snow")' dummy_file

First, HTML and PDF are not related although they were created around the same time. HTML is intended to convey higher level information such as paragraphs and tables. Although there are methods to control it, it is ultimately up to the browser to draw these higher level concepts. PDF is intended to convey documents and the documents must "look" the same wherever they are rendered.

In an HTML document you might have a paragraph that's 100% wide and depending on the width of your monitor it might take 2 lines or 10 lines and when you print it it might be 7 lines and when you look at it on your phone it might take 20 lines. A PDF file, however, must be independent of the rendering device, so regardless of your screen size it must always render exactly the same.

Because of the musts above, PDF doesn't support abstract things like "tables" or "paragraphs". There are three basic things that PDF supports: text, lines/shapes and images. (There are other things like annotations and movies but I'm trying to keep it simple here.) In a PDF you don't say "here's a paragraph, browser do your thing!". Instead you say, "draw this text at this exact X,Y location using this exact font and don't worry, I've previously calculated the width of the text so I know it will all fit on this line". You also don't say "here's a table" but instead you say "draw this text at this exact location and then draw a rectangle at this other exact location that I've previously calculated so I know it will appear to be around the text".

Second, iText and iTextSharp parse HTML and CSS. That's it. ASP.Net, MVC, Razor, Struts, Spring, etc, are all HTML frameworks but iText/iTextSharp is 100% unaware of them. Same with DataGridViews, Repeaters, Templates, Views, etc. which are all framework-specific abstractions. It is your responsibility to get the HTML from your choice of framework, iText won't help you. If you get an exception saying The document has no pages or you think that "iText isn't parsing my HTML" it is almost definite that you don't actually have HTML, you only think you do.

Third, the built-in class that's been around for years is the HTMLWorker however this has been replaced with XMLWorker (Java / .Net). Zero work is being done on HTMLWorker which doesn't support CSS files and has only limited support for the most basic CSS properties and actually breaks on certain tags. If you do not see the HTML attribute or CSS property and value in this file then it probably isn't supported by HTMLWorker. XMLWorker can be more complicated sometimes but those complications also make it more extensible.

Below is C# code that shows how to parse HTML tags into iText abstractions that get automatically added to the document that you are working on. C# and Java are very similar so it should be relatively easy to convert this. Example #1 uses the built-in HTMLWorker to parse the HTML string. Since only inline styles are supported the class="headline" gets ignored but everything else should actually work. Example #2 is the same as the first except it uses XMLWorker instead. Example #3 also parses the simple CSS example.

//Create a byte array that will eventually hold our final PDF
Byte[] bytes;

//Boilerplate iTextSharp setup here
//Create a stream that we can write to, in this case a MemoryStream
using (var ms = new MemoryStream()) {

    //Create an iTextSharp Document which is an abstraction of a PDF but **NOT** a PDF
    using (var doc = new Document()) {

        //Create a writer that's bound to our PDF abstraction and our stream
        using (var writer = PdfWriter.GetInstance(doc, ms)) {

            //Open the document for writing
            doc.Open();

            //Our sample HTML and CSS
            var example_html = @"<p>This <em>is </em><span class=""headline"" style=""text-decoration: underline;"">some</span> <strong>sample <em> text</em></strong><span style=""color: red;"">!!!</span></p>";
            var example_css = @".headline{font-size:200%}";

            /**************************************************
             * Example #1                                     *
             *                                                *
             * Use the built-in HTMLWorker to parse the HTML. *
             * Only inline CSS is supported.                  *
             * ************************************************/

            //Create a new HTMLWorker bound to our document
            using (var htmlWorker = new iTextSharp.text.html.simpleparser.HTMLWorker(doc)) {

                //HTMLWorker doesn't read a string directly but instead needs a TextReader (which StringReader subclasses)
                using (var sr = new StringReader(example_html)) {

                    //Parse the HTML
                    htmlWorker.Parse(sr);
                }
            }

            /**************************************************
             * Example #2                                     *
             *                                                *
             * Use the XMLWorker to parse the HTML.           *
             * Only inline CSS and absolutely linked          *
             * CSS is supported                               *
             * ************************************************/

            //XMLWorker also reads from a TextReader and not directly from a string
            using (var srHtml = new StringReader(example_html)) {

                //Parse the HTML
                iTextSharp.tool.xml.XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, srHtml);
            }

            /**************************************************
             * Example #3                                     *
             *                                                *
             * Use the XMLWorker to parse HTML and CSS        *
             * ************************************************/

            //In order to read CSS as a string we need to switch to a different constructor
            //that takes Streams instead of TextReaders.
            //Below we convert the strings into UTF8 byte array and wrap those in MemoryStreams
            using (var msCss = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(example_css))) {
                using (var msHtml = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(example_html))) {

                    //Parse the HTML
                    iTextSharp.tool.xml.XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, msHtml, msCss);
                }
            }


            doc.Close();
        }
    }

    //After all of the PDF "stuff" above is done and closed but **before** we
    //close the MemoryStream, grab all of the active bytes from the stream
    bytes = ms.ToArray();
}

//Now we just need to do something with those bytes.
//Here I'm writing them to disk but if you were in ASP.Net you might Response.BinaryWrite() them.
//You could also write the bytes to a database in a varbinary() column (but please don't) or you
//could pass them to another function for further PDF processing.
var testFile = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "test.pdf");
System.IO.File.WriteAllBytes(testFile, bytes);

2017's update

There are good news for HTML-to-PDF demands. As this answer showed, the W3C standard css-break-3 will solve the problem... It is a Candidate Recommendation with plan to turn into definitive Recommendation this year, after tests.

As not-so-standard there are solutions, with plugins for C#, as showed by print-css.rocks.

If you're on a shared hosting environment you won't have access to the php.ini to make these changes, if you need access, a virtual private server (VPS) or a dedicated server may be a better option if you're confident in managing it yourself.

Alternatively if you create a new file called .htaccess in your root of your web directory (Ensure it doesn't contain a .txt extension if using notepad to create the file) and copy something like this inside.

php_value settingToChange 6000

This will only work if your hosting provider let's you override the certain config value. Best to ask if it doesn't work after trying.

This could be simpler and easy to remember and it works for me.

mv $(ls ~/folder | grep -v ~/folder/exclude.png) ~/destination

Just posting a some else solution)

function flatMultidimensionalArray(array &$_arr): array
{
    $result = [];
    \array_walk_recursive($_arr, static function (&$value, &$key) use (&$result) {
        $result[$key] = $value;
    });

    return $result;
}

Rather than preg_replace, you could always use PHP's filter functions using the filter_var() function with FILTER_SANITIZE_STRING.

I did this in Node JS and it solved this problem:

var data = JSON.parse(Buffer.concat(arr).toString());

delete from t
where id in (1, 4, 6, 7)

The following code is looking for '\0', and under the assumptions of the question the array can be considered sorted since all non-'\0' precede all '\0'. This assumption won't hold if the array can contain '\0' within the data.

Find the location of the first zero-byte using a binary search, then slice.

You can find the zero-byte like this:

package main

import "fmt"

func FirstZero(b []byte) int {
    min, max := 0, len(b)
    for {
        if min + 1 == max { return max }
        mid := (min + max) / 2
        if b[mid] == '\000' {
            max = mid
        } else {
            min = mid
        }
    }
    return len(b)
}
func main() {
    b := []byte{1, 2, 3, 0, 0, 0}
    fmt.Println(FirstZero(b))
}

It may be faster just to naively scan the byte array looking for the zero-byte, especially if most of your strings are short.

The accepted answer does not work. And the highest voted answer does not answer the actual question. With a fixed pixel height header, and a filler in the remaining display of the browser, and scroll for owerflow. Here is a solution that actually works, using absolute positioning. I also assume that the height of the header is known, by the sound of "fixed header" in the question. I use 150px as an example here:

HTML:

<html>
    <body>
        <div id="Header">
        </div>
        <div id="Content">      
        </div>
    </body>
</html>

CSS:(adding background-color for visual effect only)

#Header
{
    height: 150px;
    width: 100%;
    background-color: #ddd;
}
#Content
{
   position: absolute;
   width: 100%;
   top: 150px;
   bottom: 0;
   background-color: #aaa;
   overflow-y: scroll;
}

For a more detailed look how this works, with actual content inside the #Content, have a look at this jsfiddle, using bootstrap rows and columns.

Set background to null.

android:background="@null"

1 & 2

myVar = 8; //not dynamically allocated. Can't call delete on it.
myPointer = new int; //dynamically allocated, can call delete on it.

The first variable was allocated on the stack. You can call delete only on memory you allocated dynamically (on the heap) using the new operator.

3.

  myPointer = NULL;
  delete myPointer;

The above did nothing at all. You didn't free anything, as the pointer pointed at NULL.

The following shouldn't be done:

myPointer = new int;
myPointer = NULL; //leaked memory, no pointer to above int
delete myPointer; //no point at all

You pointed it at NULL, leaving behind leaked memory (the new int you allocated). You should free the memory you were pointing at. There is no way to access that allocated new int anymore, hence memory leak.

The correct way:

myPointer = new int;
delete myPointer; //freed memory
myPointer = NULL; //pointed dangling ptr to NULL

The better way:

If you're using C++, do not use raw pointers. Use smart pointers instead which can handle these things for you with little overhead. C++11 comes with several.

Try FileUtils from Apache commons-io (listFiles and iterateFiles methods):

File dir = new File(".");
FileFilter fileFilter = new WildcardFileFilter("sample*.java");
File[] files = dir.listFiles(fileFilter);
for (int i = 0; i < files.length; i++) {
   System.out.println(files[i]);
}

To solve your issue with the TestX folders, I would first iterate through the list of folders:

File[] dirs = new File(".").listFiles(new WildcardFileFilter("Test*.java");
for (int i=0; i<dirs.length; i++) {
   File dir = dirs[i];
   if (dir.isDirectory()) {
       File[] files = dir.listFiles(new WildcardFileFilter("sample*.java"));
   }
}

Quite a 'brute force' solution but should work fine. If this doesn't fit your needs, you can always use the RegexFileFilter.

Any MD5 will produce a good checksum to verify the file. Any of the files listed at the bottom of this page will work fine. http://en.wikipedia.org/wiki/Md5sum

Try this out:

<script>
  $(document).ready(function() {
    $("#button-id").click(function() {
      $('#text').val("create");
    });
  });
</script>

print_r(unpack("H*","The quick fox jumped over the lazy brown dog"))

Array ( [1] => 54686520717569636b20666f78206a756d706564206f76657220746865206c617a792062726f776e20646f67 ) 

T = 0x54, h = 0x68, ...

You can split the result into two-hex-character chunks if necessary.

Further to previous answers, you should note that a column defined as VARCHARS(10) will store 10 bytes, not 10 characters unless you define it as VARCHAR2(10 CHAR)

[The OP's question seems to be number related... this is just in case anyone else has a similar issue]

If you using Python 2 or want to rewrite java code. Their is not real solution for this. Here is what I get working in a night: https://github.com/FlorianSteenbuck/python-generics I still get no compiler so you currently using it like that:

class A(GenericObject):
    def __init__(self, *args, **kwargs):
        GenericObject.__init__(self, [
            ['b',extends,int],
            ['a',extends,str],
            [0,extends,bool],
            ['T',extends,float]
        ], *args, **kwargs)

    def _init(self, c, a, b):
        print "success c="+str(c)+" a="+str(a)+" b="+str(b)

TODOs

• Compiler
• Get Generic Classes and Types working (For things like <? extends List<Number>>)
• Add super support
• Add ? support
• Code Clean Up

Bit more detail:

    private void Form1_Load(object sender, EventArgs e)
    {
        Timer MyTimer = new Timer();
        MyTimer.Interval = (45 * 60 * 1000); // 45 mins
        MyTimer.Tick += new EventHandler(MyTimer_Tick);
        MyTimer.Start();
    }

    private void MyTimer_Tick(object sender, EventArgs e)
    {
        MessageBox.Show("The form will now be closed.", "Time Elapsed");
        this.Close();
    }

This might be too little too late but what helped me is the cool sounding 'nuclear' option. Basically using the command filter-branch you can remove files or change something over a large number of files throughout your entire git history.

It is best explained here.

You do like quicksort. Pick an element at random and shove everything either higher or lower. At this point you'll know which element you actually picked, and if it is the kth element you're done, otherwise you repeat with the bin (higher or lower), that the kth element would fall in. Statistically speaking, the time it takes to find the kth element grows with n, O(n).

On Logout from the Client Side, the easiest way is to remove the token from the storage of browser.

But, What if you want to destroy the token on the Node server -

The problem with JWT package is that it doesn't provide any method or way to destroy the token.

So in order to destroy the token on the serverside you may use jwt-redis package instead of JWT

This library (jwt-redis) completely repeats the entire functionality of the library jsonwebtoken, with one important addition. Jwt-redis allows you to store the token label in redis to verify validity. The absence of a token label in redis makes the token not valid. To destroy the token in jwt-redis, there is a destroy method

it works in this way :

1) Install jwt-redis from npm

2) To Create -

var redis = require('redis');
var JWTR =  require('jwt-redis').default;
var redisClient = redis.createClient();
var jwtr = new JWTR(redisClient);

jwtr.sign(payload, secret)
    .then((token)=>{
            // your code
    })
    .catch((error)=>{
            // error handling
    });

3) To verify -

jwtr.verify(token, secret);

4) To Destroy -

jwtr.destroy(token)

Note : you can provide expiresIn during signin of token in the same as it is provided in JWT.

When you run the code on windows machine, firewall prompts it to allow network access, allow the network access and it will work, if it does not prompts, go to firewall settings > allow an app through firewall and select your python.exe and allow network access.

This worked for me.

mElement.sendKeys(Keys.HOME,Keys.chord(Keys.SHIFT,Keys.END),MY_VALUE);

You can also just redefine those non-enumerable properties to be enumerable.

Object.defineProperty(Error.prototype, 'message', {
    configurable: true,
    enumerable: true
});

and maybe stack property too.

Here are the steps:

• Install the subclipse plugin (provides svn connectivity in eclipse) and connect to the repository. Instructions here: http://subclipse.tigris.org/install.html
• Go to File->New->Other->Under the SVN category, select Checkout Projects from SVN.
• Select your project's root folder and select checkout as a project in the workspace.

It seems you are checking the .project file into the source repository. I would suggest not checking in the .project file so users can have their own version of the file. Also, if you use the subclipse plugin it allows you to check out and configure a source folder as a java project. This process creates the correct .project for you(with the java nature),

Right click on the folder which is under SVN control, go to TortoiseSVN ? Show log. Write down the revision you want to revert to and then go to TortoiseSVN ? Update to revision....

Using a list comprehension:

from datetime import date, timedelta

d1 = date(2008,8,15)
d2 = date(2008,9,15)

# this will give you a list containing all of the dates
dd = [d1 + timedelta(days=x) for x in range((d2-d1).days + 1)]

for d in dd:
    print d

# you can't join dates, so if you want to use join, you need to
# cast to a string in the list comprehension:
ddd = [str(d1 + timedelta(days=x)) for x in range((d2-d1).days + 1)]
# now you can join
print "\n".join(ddd)

In addition to @senderle's here, some might also be wondering how to use the functionality of multiprocessing.Pool.

The nice thing is that there is a .Pool() method to the manager instance that mimics all the familiar API of the top-level multiprocessing.

from itertools import repeat
import multiprocessing as mp
import os
import pprint

def f(d: dict) -> None:
    pid = os.getpid()
    d[pid] = "Hi, I was written by process %d" % pid

if __name__ == '__main__':
    with mp.Manager() as manager:
        d = manager.dict()
        with manager.Pool() as pool:
            pool.map(f, repeat(d, 10))
        # `d` is a DictProxy object that can be converted to dict
        pprint.pprint(dict(d))

Output:

$ python3 mul.py 
{22562: 'Hi, I was written by process 22562',
 22563: 'Hi, I was written by process 22563',
 22564: 'Hi, I was written by process 22564',
 22565: 'Hi, I was written by process 22565',
 22566: 'Hi, I was written by process 22566',
 22567: 'Hi, I was written by process 22567',
 22568: 'Hi, I was written by process 22568',
 22569: 'Hi, I was written by process 22569',
 22570: 'Hi, I was written by process 22570',
 22571: 'Hi, I was written by process 22571'}

This is a slightly different example where each process just logs its process ID to the global DictProxy object d.

Check PHP's strtotime-function to convert your set date/time to a timestamp: http://php.net/manual/en/function.strtotime.php

If strtotime can't handle your date/time format correctly ("4:00PM" will probably work but not "at 4PM"), you'll need to use string-functions, e.g. substr to parse/correct your format and retrieve your timestamp through another function, e.g. mktime.

Then compare the resulting timestamp with the current date/time (if ($calulated_timestamp > time()) { /* date in the future */ }) to see whether the set date/time is in the past or the future.

I suggest to read the PHP-doc on date/time-functions and get back here with some of your source-code once you get stuck.

You can try this:

<div ng-app="app">
    <div ng-controller="AppCtrl">
        <a my-dir ng-repeat="user in users" ng-click="fxn()">{{user.name}}</a>
    </div>
</div>

<script>
var app = angular.module('app', []);

function AppCtrl($scope) {
        $scope.users = [{ name: 'John', id: 1 }, { name: 'anonymous' }];
        $scope.fxn = function () {
            alert('It works');
        };
    }

app.directive("myDir", function ($compile) {
    return {
        scope: {ngClick: '='}
    };
});
</script>

You can use -R with chmod for recursive traversal of all files and subfolders.

You might need sudo as it depends on LAMP being installed by the current user or another one:

sudo chmod -R 755 /opt/lampp/htdocs

"Resource temporarily unavailable" is the error message corresponding to EAGAIN, which means that the operation would have blocked but nonblocking operation was requested. For send(), that could be due to any of:

• explicitly marking the file descriptor as nonblocking with fcntl(); or
• passing the MSG_DONTWAIT flag to send(); or
• setting a send timeout with the SO_SNDTIMEO socket option.

I am using CentOS and had same problem.

I changed /usr/local/bin/composer to /usr/bin/composer and it worked.

Run below command :

curl -sS https://getcomposer.org/installer | php sudo mv composer.phar /usr/bin/composer

Verify Composer is installed or not

composer --version

What I have observed is: if you use openssl to generate certificates, it captures both the text part and the base64 certificate part in the crt file. The strict pem format says (wiki definition) that the file should start and end with BEGIN and END.

.pem – (Privacy Enhanced Mail) Base64 encoded DER certificate, enclosed between "-----BEGIN CERTIFICATE-----" and "-----END CERTIFICATE-----"

So for some libraries (I encountered this in java) that expect strict pem format, the generated crt would fail the validation as an 'invalid pem format'.

Even if you copy or grep the lines with BEGIN/END CERTIFICATE, and paste it in a cert.pem file, it should work.

Here is what I do, not very clean, but works for me, basically it filters the text starting from BEGIN line:

grep -A 1000 BEGIN cert.crt > cert.pem

This has been answered above, but I wanted to suggest an alternative.

When in the Build Settings for you project or target, you can go to the Editor menu and select Show Setting Names from the menu. This will change all of the options in the Build Settings pane to the build variable names. The option in the menu changes to Show Setting Titles, select this to change back to the original view.

This can be handy when you know what build setting you want to use in a script, toggle the setting names in the menu and you can see the variable name.

This could be done using reshape. It is possible with dplyr though.

  colnames(df) <- gsub("\\.(.{2})$", "_\\1", colnames(df))
  colnames(df)[2] <- "Date"
  res <- reshape(df, idvar=c("id", "Date"), varying=3:8, direction="long", sep="_")
  row.names(res) <- 1:nrow(res)
  
   head(res)
  #  id       Date time       Q3.2       Q3.3
  #1  1 2009-01-01    1  1.3709584  0.4554501
  #2  2 2009-01-02    1 -0.5646982  0.7048373
  #3  3 2009-01-03    1  0.3631284  1.0351035
  #4  4 2009-01-04    1  0.6328626 -0.6089264
  #5  5 2009-01-05    1  0.4042683  0.5049551
  #6  6 2009-01-06    1 -0.1061245 -1.7170087

Or using dplyr

  library(tidyr)
  library(dplyr)
  colnames(df) <- gsub("\\.(.{2})$", "_\\1", colnames(df))

  df %>%
     gather(loop_number, "Q3", starts_with("Q3")) %>% 
     separate(loop_number,c("L1", "L2"), sep="_") %>% 
     spread(L1, Q3) %>%
     select(-L2) %>%
     head()
  #  id       time       Q3.2       Q3.3
  #1  1 2009-01-01  1.3709584  0.4554501
  #2  1 2009-01-01  1.3048697  0.2059986
  #3  1 2009-01-01 -0.3066386  0.3219253
  #4  2 2009-01-02 -0.5646982  0.7048373
  #5  2 2009-01-02  2.2866454 -0.3610573
  #6  2 2009-01-02 -1.7813084 -0.7838389

Update

With new version of tidyr, we can use pivot_longer to reshape multiple columns. (Using the changed column names from gsub above)

library(dplyr)
library(tidyr)
df %>% 
    pivot_longer(cols = starts_with("Q3"), 
          names_to = c(".value", "Q3"), names_sep = "_") %>% 
    select(-Q3)
# A tibble: 30 x 4
#      id time         Q3.2    Q3.3
#   <int> <date>      <dbl>   <dbl>
# 1     1 2009-01-01  0.974  1.47  
# 2     1 2009-01-01 -0.849 -0.513 
# 3     1 2009-01-01  0.894  0.0442
# 4     2 2009-01-02  2.04  -0.553 
# 5     2 2009-01-02  0.694  0.0972
# 6     2 2009-01-02 -1.11   1.85  
# 7     3 2009-01-03  0.413  0.733 
# 8     3 2009-01-03 -0.896 -0.271 
#9     3 2009-01-03  0.509 -0.0512
#10     4 2009-01-04  1.81   0.668 
# … with 20 more rows

NOTE: Values are different because there was no set seed in creating the input dataset

You'll have to do things manually with an AJAX call to the server. This will require you to override the form as well.

But don't worry, it's a piece of cake. Here's an overview on how you'll go about working with your form:

• override the default submit action (thanks to the passed in event object, that has a preventDefault method)
• grab all necessary values from the form
• fire off an HTTP request
• handle the response to the request

First, you'll have to cancel the form submit action like so:

$("#myform").submit(function(event) {
    // Cancels the form's submit action.
    event.preventDefault();
});

And then, grab the value of the data. Let's just assume you have one text box.

$("#myform").submit(function(event) {
    event.preventDefault();
    var val = $(this).find('input[type="text"]').val();
});

And then fire off a request. Let's just assume it's a POST request.

$("#myform").submit(function(event) {
    event.preventDefault();
    var val = $(this).find('input[type="text"]').val();

    // I like to use defers :)
    deferred = $.post("http://somewhere.com", { val: val });

    deferred.success(function () {
        // Do your stuff.
    });

    deferred.error(function () {
        // Handle any errors here.
    });
});

And this should about do it.

Note 2: For parsing the form's data, it's preferable that you use a plugin. It will make your life really easy, as well as provide a nice semantic that mimics an actual form submit action.

Note 2: You don't have to use defers. It's just a personal preference. You can equally do the following, and it should work, too.

$.post("http://somewhere.com", { val: val }, function () {
    // Start partying here.
}, function () {
    // Handle the bad news here.
});

Just write this simple line of code :-

button.performClick();

where button is the reference variable of Button class and defined as follows:-

private Button buttonToday ;
buttonToday = (Button) findViewById(R.id.buttonToday);

That's it.

I encountered the same credential prompting issue, and did a quick search and nothing on the internet would fix it. It took some time to find the problem, a silly one.

In IIS -> Advance Setting -> Physical Path Credential (is empty)

As soon as i added a machine ID (domain/user) that has access to the VM/server, the password prompting would stop.

Hope this helps

I used the Command_Line_Tools_OS_X_10.XX_for_Xcode_7.2.dmg and therefore had to download the latest version from here.

How about a solution where you put the actual "data" of the table inside its own div, with overflow: scroll;? Then the browser will automatically create scrollbars for the portion of the "table" you do not want to lock, and you can put the "table header"/first row just above that <div>.

Not sure how that would work with scrolling horizontally though.

I have followed the best answer of Loktar and it worked very well. The only problem I had was with Chrome (my current version is 27.0.1453.94 m). The problem I had was that it seems Chrome is aware that the text in the link is not visible and it puts the link a little bit lower then it is supposed to be (something like margin-top, but it is not possible to change it). This happens with all the ways in which we make the text invisible: - line-height: 0; - font-size: 0; - text-indent:-9999px;

I was able to fix this problem by adjusting the vertical-align of the link like this:

vertical-align: 25px;

I hope this is helpful

To expand on the answer provided by @Orion Edwards, this is how you would do fully from code-behind (no styles set). Basically create a custom class that inherits from Border which has its Child set to a TextBox. The example below assumes that you only want a single line and that the border is a child of a Canvas. Also assumes you would need to adjust the MaxLength property of the TextBox based on the width of the Border. The example below also sets the cursor of the Border to mimic a Textbox by setting it to the type 'IBeam'. A margin of '3' is set so that the TextBox isn't absolutely aligned to the left of the border.

double __dX = 20;
double __dY = 180;
double __dW = 500;
double __dH = 40;
int __iMaxLen = 100;

this.m_Z3r0_TextBox_Description = new CZ3r0_TextBox(__dX, __dY, __dW, __dH, __iMaxLen, TextAlignment.Left);
this.Children.Add(this.m_Z3r0_TextBox_Description);

Class:

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;
using System.Windows.Controls.Primitives;


namespace ifn0tz3r0Exp
{
    class CZ3r0_TextBox : Border
    {
        private TextBox m_TextBox;

        private SolidColorBrush m_Brush_Green = new SolidColorBrush(Colors.MediumSpringGreen);
        private SolidColorBrush m_Brush_Black = new SolidColorBrush(Colors.Black);
        private SolidColorBrush m_Brush_Transparent = new SolidColorBrush(Colors.Transparent);

        public CZ3r0_TextBox(double _dX, double _dY, double _dW, double _dH, int _iMaxLen, TextAlignment _Align)
        {

            /////////////////////////////////////////////////////////////
            //TEXTBOX
            this.m_TextBox = new TextBox();
            this.m_TextBox.Text = "This is a vertically centered one-line textbox embedded in a border...";
            Canvas.SetLeft(this, _dX);
            Canvas.SetTop(this, _dY);
            this.m_TextBox.FontFamily = new FontFamily("Consolas");
            this.m_TextBox.FontSize = 11;
            this.m_TextBox.Background = this.m_Brush_Black;
            this.m_TextBox.Foreground = this.m_Brush_Green;
            this.m_TextBox.BorderBrush = this.m_Brush_Transparent;
            this.m_TextBox.BorderThickness = new Thickness(0.0);
            this.m_TextBox.Width = _dW;
            this.m_TextBox.MaxLength = _iMaxLen;
            this.m_TextBox.TextAlignment = _Align;
            this.m_TextBox.VerticalAlignment = System.Windows.VerticalAlignment.Center;
            this.m_TextBox.FocusVisualStyle = null;
            this.m_TextBox.Margin = new Thickness(3.0);
            this.m_TextBox.CaretBrush = this.m_Brush_Green;
            this.m_TextBox.SelectionBrush = this.m_Brush_Green;
            this.m_TextBox.SelectionOpacity = 0.3;

            this.m_TextBox.GotFocus += this.CZ3r0_TextBox_GotFocus;
            this.m_TextBox.LostFocus += this.CZ3r0_TextBox_LostFocus;
            /////////////////////////////////////////////////////////////
            //BORDER

            this.BorderBrush = this.m_Brush_Transparent;
            this.BorderThickness = new Thickness(1.0);
            this.Background = this.m_Brush_Black;            
            this.Height = _dH;
            this.Child = this.m_TextBox;
            this.FocusVisualStyle = null;
            this.MouseDown += this.CZ3r0_TextBox_MouseDown;
            this.Cursor = Cursors.IBeam;
            /////////////////////////////////////////////////////////////
        }
        private void CZ3r0_TextBox_MouseDown(object _Sender, MouseEventArgs e)
        {
            this.m_TextBox.Focus();
        }
        private void CZ3r0_TextBox_GotFocus(object _Sender, RoutedEventArgs e)
        {
            this.BorderBrush = this.m_Brush_Green;
        }
        private void CZ3r0_TextBox_LostFocus(object _Sender, RoutedEventArgs e)
        {
            this.BorderBrush = this.m_Brush_Transparent;
        }
    }
}

Yep, hitting on the --subdirectory-filter of filter-branch was key. The fact that you used it essentially proves there's no easier way - you had no choice but to rewrite history, since you wanted to end up with only a (renamed) subset of the files, and this by definition changes the hashes. Since none of the standard commands (e.g. pull) rewrite history, there's no way you could use them to accomplish this.

You could refine the details, of course - some of your cloning and branching wasn't strictly necessary - but the overall approach is good! It's a shame it's complicated, but of course, the point of git isn't to make it easy to rewrite history.

Use window.open(). It's pretty straightforward !

In your component.html file-

<a (click)="goToLink("www.example.com")">page link</a>

In your component.ts file-

goToLink(url: string){
    window.open(url, "_blank");
}

Based on Kapitán Mlíko's answer with source above, I would change it to use the following:

It's a better practice to use the Marlett font rather than Path Data points for the Minimize, Restore/Maximize and Close buttons.

<StackPanel Orientation="Horizontal" HorizontalAlignment="Right" VerticalAlignment="Top" WindowChrome.IsHitTestVisibleInChrome="True" Grid.Row="0">
<Button Command="{Binding Source={x:Static SystemCommands.MinimizeWindowCommand}}" ToolTip="minimize" Style="{StaticResource WindowButtonStyle}">
    <Button.Content>
        <Grid Width="30" Height="25">
            <TextBlock Text="0" FontFamily="Marlett" FontSize="14" VerticalAlignment="Center" HorizontalAlignment="Center" Padding="3.5,0,0,3" />
        </Grid>
    </Button.Content>
</Button>
<Grid Margin="1,0,1,0">
    <Button x:Name="Restore" Command="{Binding Source={x:Static SystemCommands.RestoreWindowCommand}}" ToolTip="restore" Visibility="Collapsed" Style="{StaticResource WindowButtonStyle}">
        <Button.Content>
            <Grid Width="30" Height="25" UseLayoutRounding="True">
                <TextBlock Text="2" FontFamily="Marlett" FontSize="14" VerticalAlignment="Center" HorizontalAlignment="Center" Padding="2,0,0,1" />
            </Grid>
        </Button.Content>
    </Button>
    <Button x:Name="Maximize" Command="{Binding Source={x:Static SystemCommands.MaximizeWindowCommand}}" ToolTip="maximize" Style="{StaticResource WindowButtonStyle}">
        <Button.Content>
            <Grid Width="31" Height="25">
                <TextBlock Text="1" FontFamily="Marlett" FontSize="14" VerticalAlignment="Center" HorizontalAlignment="Center" Padding="2,0,0,1" />
            </Grid>
        </Button.Content>
    </Button>
</Grid>
<Button Command="{Binding Source={x:Static SystemCommands.CloseWindowCommand}}" ToolTip="close"  Style="{StaticResource WindowButtonStyle}">
    <Button.Content>
        <Grid Width="30" Height="25">
            <TextBlock Text="r" FontFamily="Marlett" FontSize="14" VerticalAlignment="Center" HorizontalAlignment="Center" Padding="0,0,0,1" />
        </Grid>
    </Button.Content>
</Button>

With zsh ohmyzsh I added this to the .zshrc:

 # You may need to manually set your language environment
 LANGUAGE=en_US.UTF-8
 LANG=en_US.UTF-8
 LC_CTYPE=en_US.UTF-8
 LC_ALL=en_US.UTF-8

By removing the line export LANG=en_US.UTF-8

Reopened a new tab and SSHed in, worked for me :)

If you are using just code like this below, you must put just a grave accent at the end of line `.

docker run -d --name rabbitmq `
           -p 5672:5672 `
           -p 15672:15672 `
           --restart=always `
           --hostname rabbitmq-master `
           -v c:\docker\rabbitmq\data:/var/lib/rabbitmq `
           rabbitmq:latest

Interesting question, I tried doing this by just doing a fixed position row, but this way seems to be a much better one. Source at bottom.

css

thead { display:block; background: green; margin:0px; cell-spacing:0px; left:0px; }
tbody { display:block; overflow:auto; height:100px; }
th { height:50px; width:80px; }
td { height:50px; width:80px; background:blue; margin:0px; cell-spacing:0px;}

html

<table>
    <thead>
        <tr><th>hey</th><th>ho</th></tr>
    </thead>
    <tbody>
        <tr><td>test</td><td>test</td></tr>
        <tr><td>test</td><td>test</td></tr>
        <tr><td>test</td><td>test</td></tr>
</tbody>

http://www.imaputz.com/cssStuff/bigFourVersion.html

Try this;

=IF(B1>=0, B1, OFFSET($X$1, MATCH(B1, $X:$X, Z) - 1, Y)

WHERE
X = The columns you are indexing into
Y = The number of columns to the left (-Y) or right (Y) of the indexed column to get the value you are looking for
Z = 0 if exact-match (if you want to handle errors)

You can even set a separate right margin for HTML. Under the specified path:

File >> Settings >> Editor >> Code Style >> HTML >> Other Tab >> Right margin (columns)

This is very useful because generally HTML and JS may be usually long in one line than Python. :)

Just want to add a demonstration using loc to filter not only by rows but also by columns and some merits to the chained operation.

The code below can filter the rows by value.

df_filtered = df.loc[df['column'] == value]

By modifying it a bit you can filter the columns as well.

df_filtered = df.loc[df['column'] == value, ['year', 'column']]

So why do we want a chained method? The answer is that it is simple to read if you have many operations. For example,

res =  df\
    .loc[df['station']=='USA', ['TEMP', 'RF']]\
    .groupby('year')\
    .agg(np.nanmean)

As my perspective, The better way with knowing the logic itself is below

 let testStr: String = "I love my family if you Love us to tell us I'm with you"
 var newStr = ""
 let char:Character = "i"

 for value in testStr {
      if value == char {
         newStr = newStr + String(value)
   }

}
print(newStr.count)

I just give it a shot:

In [9]: s = Series([True, True, True, False])

In [10]: s
Out[10]: 
0     True
1     True
2     True
3    False

In [11]: -s
Out[11]: 
0    False
1    False
2    False
3     True

<textarea name='Status'> </textarea>
<input type='button' value='Status Update'>

You have few problems with your code like using . for concatenation

Try this -

$(function () {
    $('input').on('click', function () {
        var Status = $(this).val();
        $.ajax({
            url: 'Ajax/StatusUpdate.php',
            data: {
                text: $("textarea[name=Status]").val(),
                Status: Status
            },
            dataType : 'json'
        });
    });
});

Between int32 and int32_t, (and likewise between int8 and int8_t) the difference is pretty simple: the C standard defines int8_t and int32_t, but does not define anything named int8 or int32 -- the latter (if they exist at all) is probably from some other header or library (most likely predates the addition of int8_t and int32_t in C99).

Plain int is quite a bit different from the others. Where int8_t and int32_t each have a specified size, int can be any size >= 16 bits. At different times, both 16 bits and 32 bits have been reasonably common (and for a 64-bit implementation, it should probably be 64 bits).

On the other hand, int is guaranteed to be present in every implementation of C, where int8_t and int32_t are not. It's probably open to question whether this matters to you though. If you use C on small embedded systems and/or older compilers, it may be a problem. If you use it primarily with a modern compiler on desktop/server machines, it probably won't be.

Oops -- missed the part about char. You'd use int8_t instead of char if (and only if) you want an integer type guaranteed to be exactly 8 bits in size. If you want to store characters, you probably want to use char instead. Its size can vary (in terms of number of bits) but it's guaranteed to be exactly one byte. One slight oddity though: there's no guarantee about whether a plain char is signed or unsigned (and many compilers can make it either one, depending on a compile-time flag). If you need to ensure its being either signed or unsigned, you need to specify that explicitly.

Just to add to answers above, you can streamline the use of express-fileupload to just a single route that needs it, instead of adding it to the every route.

let fileupload = require("express-fileupload");

...

app.post("/upload", fileupload, function(req, res){

...

});

A reference to an element will never look "falsy", so leaving off the explicit null check is safe.

Javascript will treat references to some values in a boolean context as false: undefined, null, numeric zero and NaN, and empty strings. But what getElementById returns will either be an element reference, or null. Thus if the element is in the DOM, the return value will be an object reference, and all object references are true in an if () test. If the element is not in the DOM, the return value would be null, and null is always false in an if () test.

It's harmless to include the comparison, but personally I prefer to keep out bits of code that don't do anything because I figure every time my finger hits the keyboard I might be introducing a bug :)

Note that those using jQuery should not do this:

if ($('#something')) { /* ... */ }

because the jQuery function will always return something "truthy" — even if no element is found, jQuery returns an object reference. Instead:

if ($('#something').length) { /* ... */ }

edit — as to checking the value of an element, no, you can't do that at the same time as you're checking for the existence of the element itself directly with DOM methods. Again, most frameworks make that relatively simple and clean, as others have noted in their answers.

SHELL is an environment variable, and so it's not the most reliable for what you're trying to figure out. If your tool is using a shell which doesn't set it, it will retain its old value.

Use ps to figure out what's really going on.

select sysdate from dual
30-MAR-17

select count(1) from masterdata where to_date(inactive_from_date,'DD-MON-YY'
between '01-JAN-16' to '31-DEC-16'

12998 rows

This was a very handy page as I have a requirement to DELETE records from a mySQL table where the expiry date is < Today.

I am on a shared host and CRON did not like the suggestion AndrewKDay. it also said (and I agree) that exposing the password in this way could be insecure.

I then tried turning Events ON in phpMyAdmin but again being on a shared host this was a no no. Sorry fancyPants.

So I turned to embedding the SQL script in a PHP file. I used the example [here][1]

[1]: https://www.w3schools.com/php/php_mysql_create_table.asp stored it in a sub folder somewhere safe and added an empty index.php for good measure. I was then able to test that this PHP file (and my SQL script) was working from the browser URL line.

All good so far. On to CRON. Following the above example almost worked. I ended up calling PHP before the path for my *.php file. Otherwise CRON didn't know what to do with the file.

my cron is set to run once per day and looks like this, modified for security.

00 * * * * php mywebsiteurl.com/wp-content/themes/ForteChildTheme/php/DeleteExpiredAssessment.php

For the final testing with CRON I initially set it to run each minute and had email alerts turned on. This quickly confirmed that it was running as planned and I changed it back to once per day.

Hope this helps.

Reset the index and the head to origin/master, but do not reset the working tree:

git reset origin/master

Consider adding this to your CSS to resolve the problem:

.btn {
  width: 20%;
  margin-left: 40%;
  margin-right: 30%;
}

Firstly, you are using Capacity instead of Count.

Secondly, if you only need to delete one item, then you can happily use a loop. You just need to ensure that you break out of the loop after deleting an item, like so:

int target = 4;

for (int i = 0; i < list.Count; ++i)
{
    if (list[i].UniqueID == target)
    {
        list.RemoveAt(i);
        break;
    }
}

If you want to remove all items from the list that match an ID, it becomes even easier because you can use List<T>.RemoveAll(Predicate<T> match)

int target = 4;

list.RemoveAll(element => element.UniqueID == target);

I find the following setup the easiest.

Use the default config file loading mechanism of DispatcherServlet:

The framework will, on initialization of a DispatcherServlet, look for a file named [servlet-name]-servlet.xml in the WEB-INF directory of your web application and create the beans defined there (overriding the definitions of any beans defined with the same name in the global scope).

In your case, simply create a file intrafest-servlet.xml in the WEB-INF dir and don't need to specify anything specific information in web.xml.

In intrafest-servlet.xml file you can use import to compose your XML configuration.

<beans>
  <bean id="bean1" class="..."/>
  <bean id="bean2" class="..."/>

  <import resource="foo-services.xml"/>
  <import resource="foo-persistence.xml"/>
</beans>

Note that the Spring team actually prefers to load multiple config files when creating the (Web)ApplicationContext. If you still want to do it this way, I think you don't need to specify both context parameters (context-param) and servlet initialization parameters (init-param). One of the two will do. You can also use commas to specify multiple config locations.

Something like this substitutions will be needed for your tables and field names.

Declare @TableUsers Table (User_ID, MyRowCount Int Identity(1,1)
Declare @i Int, @MaxI Int, @UserID nVarchar(50)

Insert into @TableUser
Select User_ID
From Users 
Where (My Criteria)
Select @MaxI = @@RowCount, @i = 1

While @i <= @MaxI
Begin
Select @UserID = UserID from @TableUsers Where MyRowCount = @i
Exec prMyStoredProc @UserID
Select

 @i = @i + 1, @UserID = null
End

this type of error usually occur when you try to access data through the index in which data data has not been assign. for example

//assign of data in to array
for(int i=0; i<10; i++){
   arr[i]=i;
}
//accessing of data through array index
for(int i=10; i>=0; i--){
cout << arr[i];
}

the code will give error (vector subscript out of range) because you are accessing the arr[10] which has not been assign yet.

Here is what I did to solve just by 2 ways:

1. make ID column as int type

2. if you are using autogenerate in ID dont assing value in the setter of ID. If your mapping the some then sometimes autogenetated ID is not concedered. (I dont know why)

3. try using @GeneratedValue(strategy=GenerationType.SEQUENCE) if possible

<script>
    function validate() {
        var phone=document.getElementById("phone").value;
        if(isNaN(phone))
        {
            alert("please enter digits only");
        }

        else if(phone.length!=10)
        {
            alert("invalid mobile number");
        }
        else
        {
            confirm("hello your mobile number is" +" "+phone);
        }
</script>

You can't do the second, because even if you use the remove() method on Iterator, you'll get an Exception thrown.

Personally, I would prefer the first for all Collection instances, despite the additional overheard of creating the new Collection, I find it less prone to error during edit by other developers. On some Collection implementations, the Iterator remove() is supported, on other it isn't. You can read more in the docs for Iterator.

The third alternative, is to create a new Collection, iterate over the original, and add all the members of the first Collection to the second Collection that are not up for deletion. Depending on the size of the Collection and the number of deletes, this could significantly save on memory, when compared to the first approach.

For length including white-space:

$("#id").val().length

For length without white-space:

$("#id").val().replace(/ /g,'').length

For removing only beginning and trailing white-space:

$.trim($("#test").val()).length

For example, the string " t e s t " would evaluate as:

//" t e s t "
$("#id").val(); 

//Example 1
$("#id").val().length; //Returns 9
//Example 2
$("#id").val().replace(/ /g,'').length; //Returns 4
//Example 3
$.trim($("#test").val()).length; //Returns 7

Here is a demo using all of them.

I started using the 'prefix-free' Script available at http://leaverou.github.io/prefixfree so I don't have to take care about the vendor prefixes. It neatly takes care of setting the correct vendor prefix behind the scenes for you. Plus a jQuery Plugin is available as well so one can still use jQuery's .css() method without code changes, so the suggested line in combination with prefix-free would be all you need:

$('.user-text').css('transform', 'scale(' + ui.value + ')');

like wrote here:

I just ran into this problem, even without transferring from Eclipse, and was frustrated because I kept showing no compile or packageDebug errors. Somehow it all fixes itself if you clean and THEN run packageDebug. Don't worry about the deprecated method statement - it seems to be a generic notice to developers.

Open up a commandline, and in your project's root directory, run:

./gradlew clean packageDebug

Obviously, if either of these steps shows errors, you should fix those...But when they both succeed you should now be able to find the apk when you navigate the local path -- and even better, your program should install/run on the device/emulator!

I'm guessing that you are running Eclipse Mars, or an even earlier release. You need to upgrade to Eclipse Neon or later

 $(this).closest('ul').attr('id');

In order to take advantage of the auto-incrementing capability of the column, do not supply a value for that column when inserting rows. The database will supply a value for you.

INSERT INTO test.authors (
   instance_id,host_object_id,check_type,is_raw_check,
   current_check_attempt,max_check_attempts,state,state_type,
   start_time,start_time_usec,end_time,end_time_usec,command_object_id,
   command_args,command_line,timeout,early_timeout,execution_time,
   latency,return_code,output,long_output,perfdata
) VALUES (
   '1','67','0','0','1','10','0','1','2012-01-03 12:50:49','108929',
   '2012-01-03 12:50:59','198963','21','',
   '/usr/local/nagios/libexec/check_ping  5','30','0','4.04159',
   '0.102','1','PING WARNING -DUPLICATES FOUND! Packet loss = 0%, RTA = 2.86 ms',
   '','rta=2.860000m=0%;80;100;0'
);

Use os.rename(src, dst) to rename or move a file or a directory.

$ ls
cheese_cheese_type.bar  cheese_cheese_type.foo
$ python
>>> import os
>>> for filename in os.listdir("."):
...  if filename.startswith("cheese_"):
...    os.rename(filename, filename[7:])
... 
>>> 
$ ls
cheese_type.bar  cheese_type.foo

It is quite easy using width: 70%; left:15%;

Sets the element width to 70% of the window and leaves 15% on both sides

Actually, it is very simple. If you want a simple black rectangle behind the Textview, just add android:background="@android:color/black" within the TextView tags. Like this:

<TextView
    android:textSize="15pt" android:textColor="#ffa7ff04"
    android:layout_alignBottom="@+id/webView1"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:background="@android:color/black"/>

Try running CREATE TABLE [schemaname].[tableName]; GO;

This assumes the schemaname exists in your database. Please use CREATE SCHEMA [schemaname] if you need to create a schema as well.

EDIT: updated to note SQL Server 11.03 requiring this be the only statement in the batch.

If jQuery's error handler is being called and the XHR object contains "parser error", that's probably a parser error coming back from the server.

Is your multiple result scenario when you call the service without a parameter, but it's breaking when you try to supply a parameter to retrieve the single record?

What backend are you returning this from?

On ASMX services, for example, that's often the case when parameters are supplied to jQuery as a JSON object instead of a JSON string. If you provide jQuery an actual JSON object for its "data" parameter, it will serialize that into standard & delimited k,v pairs instead of sending it as JSON.

Any of these will work from the shell command line. bc is probably your most straight forward solution though.

Using bc:

$ echo "$d1 - $d2" | bc

Using awk:

$ echo $d1 $d2 | awk '{print $1 - $2}'

Using perl:

$ perl -E "say $d1 - $d2"

Using Python:

$ python -c "print $d1 - $d2"

all return

4

Use the echo command:

var="text to append";
destdir=/some/directory/path/filename

if [ -f "$destdir" ]
then 
    echo "$var" > "$destdir"
fi

The if tests that $destdir represents a file.

The > appends the text after truncating the file. If you only want to append the text in $var to the file existing contents, then use >> instead:

echo "$var" >> "$destdir"

The cp command is used for copying files (to files), not for writing text to a file.

you can creat symlink to your libusb after locate it in your system :

sudo ln -s /lib/x86_64-linux-gnu/libusb-1.0.so.0 /usr/lib/libusbx-1.0.so.0.1.0 

sudo ln -s /lib/x86_64-linux-gnu/libusb-1.0.so.0 /usr/lib/libusbx-1.0.so

I've been able to create a single exe file with all resources embeded into the exe. I'm building on windows. so that will explain some of the os.system calls i'm using.

First I tried converting all my images into bitmats and then all my data files into text strings. but this caused the final exe to be very very large.

After googleing for a week i figured out how to alter py2exe script to meet my needs.

here is the patch link on sourceforge i submitted, please post comments so we can get it included in the next distribution.

http://sourceforge.net/tracker/index.php?func=detail&aid=3334760&group_id=15583&atid=315583

this explanes all the changes made, i've simply added a new option to the setup line. here is my setup.py.

i'll try to comment it as best I can. Please know that my setup.py is complex do to the fact that i'm access the images by filename. so I must store a list to keep track of them.

this is from a want-to-b screen saver I was trying to make.

I use exec to generate my setup at run time, its easyer to cut and paste like that.

exec "setup(console=[{'script': 'launcher.py', 'icon_resources': [(0, 'ICON.ico')],\
      'file_resources': [%s], 'other_resources': [(u'INDEX', 1, resource_string[:-1])]}],\
      options={'py2exe': py2exe_options},\
      zipfile = None )" % (bitmap_string[:-1])

breakdown

script = py script i want to turn to an exe

icon_resources = the icon for the exe

file_resources = files I want to embed into the exe

other_resources = a string to embed into the exe, in this case a file list.

options = py2exe options for creating everything into one exe file

bitmap_strings = a list of files to include

Please note that file_resources is not a valid option untill you edit your py2exe.py file as described in the link above.

first time i've tried to post code on this site, if I get it wrong don't flame me.

from distutils.core import setup
import py2exe #@UnusedImport
import os

#delete the old build drive
os.system("rmdir /s /q dist")

#setup my option for single file output
py2exe_options = dict( ascii=True,  # Exclude encodings
                       excludes=['_ssl',  # Exclude _ssl
                                 'pyreadline', 'difflib', 'doctest', 'locale',
                                 'optparse', 'pickle', 'calendar', 'pbd', 'unittest', 'inspect'],  # Exclude standard library
                       dll_excludes=['msvcr71.dll', 'w9xpopen.exe',
                                     'API-MS-Win-Core-LocalRegistry-L1-1-0.dll',
                                     'API-MS-Win-Core-ProcessThreads-L1-1-0.dll',
                                     'API-MS-Win-Security-Base-L1-1-0.dll',
                                     'KERNELBASE.dll',
                                     'POWRPROF.dll',
                                     ],
                       #compressed=None,  # Compress library.zip
                       bundle_files = 1,
                       optimize = 2                        
                       )

#storage for the images
bitmap_string = '' 
resource_string = ''
index = 0

print "compile image list"                          

for image_name in os.listdir('images/'):
    if image_name.endswith('.jpg'):
        bitmap_string += "( " + str(index+1) + "," + "'" + 'images/' + image_name + "'),"
        resource_string += image_name + " "
        index += 1

print "Starting build\n"

exec "setup(console=[{'script': 'launcher.py', 'icon_resources': [(0, 'ICON.ico')],\
      'file_resources': [%s], 'other_resources': [(u'INDEX', 1, resource_string[:-1])]}],\
      options={'py2exe': py2exe_options},\
      zipfile = None )" % (bitmap_string[:-1])

print "Removing Trash"
os.system("rmdir /s /q build")
os.system("del /q *.pyc")
print "Build Complete"

ok, thats it for the setup.py now the magic needed access the images. I developed this app without py2exe in mind then added it later. so you'll see access for both situations. if the image folder can't be found it tries to pull the images from the exe resources. the code will explain it. this is part of my sprite class and it uses a directx. but you can use any api you want or just access the raw data. doesn't matter.

def init(self):
    frame = self.env.frame
    use_resource_builtin = True
    if os.path.isdir(SPRITES_FOLDER):
        use_resource_builtin = False
    else:
        image_list = LoadResource(0, u'INDEX', 1).split(' ')

    for (model, file) in SPRITES.items():
        texture = POINTER(IDirect3DTexture9)()
        if use_resource_builtin: 
            data = LoadResource(0, win32con.RT_RCDATA, image_list.index(file)+1) #windll.kernel32.FindResourceW(hmod,typersc,idrsc)               
            d3dxdll.D3DXCreateTextureFromFileInMemory(frame.device,   #Pointer to an IDirect3DDevice9 interface
                                              data,                #Pointer to the file in memory
                                              len(data),           #Size of the file in memory
                                              byref(texture))      #ppTexture
        else:
            d3dxdll.D3DXCreateTextureFromFileA(frame.device, #@UndefinedVariable
                                               SPRITES_FOLDER + file,
                                               byref(texture))            
        self.model_sprites[model] = texture
    #else:
    #    raise Exception("'sprites' folder is not present!")

Any questions fell free to ask.

You can do it by hmset (multiple keys can be set using hmset).

hmset("RedisKey", dictionaryToSet)

import redis
conn = redis.Redis('localhost')

user = {"Name":"Pradeep", "Company":"SCTL", "Address":"Mumbai", "Location":"RCP"}

conn.hmset("pythonDict", user)

conn.hgetall("pythonDict")

{'Company': 'SCTL', 'Address': 'Mumbai', 'Location': 'RCP', 'Name': 'Pradeep'}

First, this code here,

string [] scripts = new String [] ("test3","test4","test5");

should be

String[] scripts = new String [] {"test3","test4","test5"};

Please read this tutorial on Arrays

Second,

Arrays are fixed size, so you can't add new Strings to above array. You may override existing values

scripts[0] = string1;

(or)

Create array with size then keep on adding elements till it is full.

If you want resizable arrays, consider using ArrayList.

For Angular 6,

ng config schematics.@schematics/angular:component.styleext scss

note: @schematics/angular is the default schematic for the Angular CLI

Good comparison tool can be found here: http://www.jpab.org/All/All/All.html

Notice also the Head to Head DBMS/JPA Comparisons

Pandas >= 0.25.0, named aggregations

Since pandas version 0.25.0 or higher, we are moving away from the dictionary based aggregation and renaming, and moving towards named aggregations which accepts a tuple. Now we can simultaneously aggregate + rename to a more informative column name:

Example:

df = pd.DataFrame(np.random.rand(4,4), columns=list('abcd'))
df['group'] = [0, 0, 1, 1]

          a         b         c         d  group
0  0.521279  0.914988  0.054057  0.125668      0
1  0.426058  0.828890  0.784093  0.446211      0
2  0.363136  0.843751  0.184967  0.467351      1
3  0.241012  0.470053  0.358018  0.525032      1

Apply GroupBy.agg with named aggregation:

df.groupby('group').agg(
             a_sum=('a', 'sum'),
             a_mean=('a', 'mean'),
             b_mean=('b', 'mean'),
             c_sum=('c', 'sum'),
             d_range=('d', lambda x: x.max() - x.min())
)

          a_sum    a_mean    b_mean     c_sum   d_range
group                                                  
0      0.947337  0.473668  0.871939  0.838150  0.320543
1      0.604149  0.302074  0.656902  0.542985  0.057681

You must turn debug off for database in config/database.php ->

$db['default']['db_debug'] = FALSE;

It is better for your website security.

in simple words

in Html - add below code only

     <form name="upload" class="form" data-ng-submit="addFile()">
  <input type="file" name="file" multiple 
 onchange="angular.element(this).scope().uploadedFile(this)" />
 <button type="submit">Upload </button>
</form>

in the controller - This function is called when you click "upload file button". it will upload the file. you can console it.

$scope.uploadedFile = function(element) {
$scope.$apply(function($scope) {
  $scope.files = element.files;         
});
}

add more in controllers - below code add into the function . This function is called when you click on button which is used "hitting the api (POST)". it will send file(which uploaded) and form-data to the backend .

var url = httpURL + "/reporttojson"
        var files=$scope.files;

         for ( var i = 0; i < files.length; i++)
         {
            var fd = new FormData();
             angular.forEach(files,function(file){
             fd.append('file',file);
             });
             var data ={
              msg : message,
              sub : sub,
              sendMail: sendMail,
              selectUsersAcknowledge:false
             };

             fd.append("data", JSON.stringify(data));
              $http.post(url, fd, {
               withCredentials : false,
               headers : {
                'Content-Type' : undefined
               },
             transformRequest : angular.identity
             }).success(function(data)
             {
                  toastr.success("Notification sent successfully","",{timeOut: 2000});
                  $scope.removereport()
                   $timeout(function() {
                    location.reload();
                }, 1000);

             }).error(function(data)
             {
              toastr.success("Error in Sending Notification","",{timeOut: 2000});
              $scope.removereport()
             });
        }

in this case .. i added below code as form data

var data ={
          msg : message,
          sub : sub,
          sendMail: sendMail,
          selectUsersAcknowledge:false
         };

HTML

<form onsubmit="return false;" id="myForm">
</form>

jQuery

$('#myForm').submit(function() {
    doSomething();
});

I believe I have found an elegant solution to this:

JavaScript

/* important! for alignment, you should make things
 * relative to the canvas' current width/height.
 */
function draw() {
  var ctx = (a canvas context);
  ctx.canvas.width  = window.innerWidth;
  ctx.canvas.height = window.innerHeight;
  //...drawing code...
}

CSS

html, body {
  width:  100%;
  height: 100%;
  margin: 0;
}

Hasn't had any large negative performance impact for me, so far.

There is also a really simple way to do this with the help of the RecursiveTreeIterator class, answered here: https://stackoverflow.com/a/37548504/2032235