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How to detect breakpoints in Bootstrap using JavaScript

Responsive Bootstrap Toolkit provides an easy way of breakpoint detection in JavaScript, detecting changes in currently active breakpoint, as well as executing any breakpoint-specific JavaScript code.

A Pen by Maciej Gurban on CodePen.

License.

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<div class="foo">
  <span class="letter" data-letter="A">A</span>
  <span class="letter" data-letter="B">B</span>
  <span class="letter" data-letter="C">C</span>
  <span class="letter" data-letter="D">D</span>
  <span class="letter" data-letter="E">E</span>
  <span class="letter" data-letter="F">F</span>
  <span class="letter" data-letter="G">G</span>
  <span class="letter" data-letter="H">H</span>
  <span class="letter" data-letter="I">I</span>

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109. Solution: Lightning Lab1:

https://a2.udemycdn.com/2020-03-14_14-24-24-54992425603e88f9c32ed5a6e6fe7e11/WebHD_720p.mp4?nva=20200327140753&token=0d6154c352bba0210f264


111. Solution: Lightning Lab - 2:

https://mp4-a.udemycdn.com/2020-03-03_15-27-45-39ebdf3b71196b8e9c0fa2cd36514fc9/WebHD_720p.mp4?-ZagjAUmy-LFzaFABZcGsG_TAOAn4l00CsNw7B8eDMGTpN9SZQ_w_kAgaur28F9dSMd8RC41DN6E2n_Bd_pRJhWqFatiUMP3clw5P-fYCPl18M1Ls0OQ5oEnrEyONaH1SqS3nn7sHy1ckQk89BI6vmDo9ZruPhzVI9qSBglwTwPy8w

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https://cdn7.git.ir/1397/03-07/Packtpub%20DevOps%20Fundamentals%20[Video]_git.ir.rar
https://cdn7.git.ir/1397/04-22/Packtpub%20Effective%20Jenkins%20Continuous%20Delivery%20with%20Jenkins%20Pipeline%20%5BVideo%5D_git.ir.rar
https://git.ir/packtpub-kubernetes-for-absolute-beginners-hands-on/

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@echo off
::              set code-page for UTF-8 charset.
chcp 65001

::              normalise to fully qualified path. short path (8.3) is used for testing the path.
set FOLDER=%~s1
for /f %%a in ("%FOLDER%") do ( set "FOLDER=%%~fsa" )

::              verify existing folder.
if ["%FOLDER%"]==[""]         ( goto RUN_STANDARD   )

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<code_scheme name="Laravel">
  <option name="SOFT_MARGINS" value="120" />
  <CssCodeStyleSettings>
    <option name="HEX_COLOR_LOWER_CASE" value="true" />
    <option name="HEX_COLOR_SHORT_FORMAT" value="true" />
  </CssCodeStyleSettings>
  <JSCodeStyleSettings version="0">
    <option name="FORCE_SEMICOLON_STYLE" value="true" />
    <option name="FIELD_PREFIX" value="" />
    <option name="FILE_NAME_STYLE" value="CAMEL_CASE" />

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function get_remote_file_size($url) {

$headers = get_headers($url, 1);
    
if (isset($headers['Content-Length'])) 
       return $headers['Content-Length'];
    
    //checks for lower case "L" in Content-length:
if (isset($headers['Content-length'])) 
       return $headers['Content-length'];

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# Those are the results for 2 000 000 runs, and here is the code I used:

<?php

require '../vendor/autoload.php';

// My small class to do benchmarks
// All it does is looping over every test x times and record the
//   time it takes using `microtime(true)`
// Then, the percentage is calculated, with 100% being the quickest

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class ParentClass {
            function test() {
                    self::which();  // output 'parent'
                    $this->which(); // output 'child'
            }

            function which() {
                    echo 'parent';
            }
    }

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<?php

class A {

    public static function newStaticClass()
    {
        return new static;
    }

    public static function newSelfClass()