Newbe Dev Stack

Example 1: javascript regex for firstname var nameRegex = / ^ [ a - zA - Z\ - ] + $ / ; Example 2: js match any number string const match = 'some/path/123' . match ( / \ / ( \d + ) / ) const id = match [ 1 ] // '123'

Example: bootstrap datepicker js cdn < link rel = "stylesheet" href = "https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/4.17.47/css/bootstrap-datetimepicker-standalone.min.css" integrity = "sha256-SMGbWcp5wJOVXYlZJyAXqoVWaE/vgFA5xfrH3i/jVw0=" crossorigin = "anonymous" / > < script src = "https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/4.17.47/js/bootstrap-datetimepicker.min.js" integrity = "sha256-5YmaxAwMjIpMrVlK84Y/+NjCpKnFYa8bWWBbUHSBGfU=" crossorigin = "anonymous" > < / script >

Answer : The following is what should be in the /etc/rabbitmq/rabbitmq-env.conf file (create it): NODENAME=rabbitNodeName@myServerName Next restart RabbitMQ : sudo service rabbitmq-server restart I think yes, you can configure any of this parameters using environment variables, it's described on RabbitMQ configuration page https://www.rabbitmq.com/configure.html

Example 1: random number generator in php you can use rand() function for that in php. Example: Generate random numbers between 1 to 50 <?php echo rand ( 1 , 50 ) ; ?> Example 2: php random 5 digit number $limit = 3 ; echo random_int ( 10 ** ( $limit - 1 ) , ( 10 ** $limit ) - 1 ) ;

Answer : On top of @rsanchez answer, if you call a chrome.webNavigation in the background script of your extension, but still have this error, you may also need to add the webNavigation permission in your manifest.json . "permissions": [ "webNavigation" ] Mozilla documentation | Chrome Documentation chrome.webNavigation , as most chrome.* APIs, can only be accessed from the background script of an extension, not from content scripts. Although your file is named background.js , your manifest shows that you are using it as a content script. It is right to use a content script in this case because you need to interact with the DOM. From the fragment of code you posted, it seems that you don't need to use the webNavigation API. You can simply set your content script in your manifest to run_at: document_end , and it will run as soon as the DOM is complete. Check http://developer.chrome.com/extensions/content_scripts.html

Example 1: bootstrap cdn < link rel = "stylesheet" href = "https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" > Example 2: bootstrap 4 cdn < ! -- Boostrap 4 CSS -- > < link rel = "stylesheet" href = "https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity = "sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin = "anonymous" > < script src = "https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity = "sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin = "anonymous" > < / script > < ! -- Boostrap JS -- > < script src = "https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity = "sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin = "ano

Example 1: cout value c++ # include <iostream> using namespace std ; int main ( ) { int a , b ; char str [ ] = "Hello Programmers" ; /* Single insertion operator */ cout << "Enter 2 numbers - " ; cin >> a >> b ; cout << str ; cout << endl ; /* Multiple insertion operator */ cout << "Value of a is " << a << endl << "Value of b is " << b ; return 0 ; } Example 2: how to cout in c++ std :: cout << "Hello World!" << std :: endl ; //Or you can do std :: cout << "Hello World!" << ; //Only in some scenarios

Example: arduino bool bool var = 0 or 1;

Answer : Yes you can. Open SDK Manager (located in android_sdk_dir/SDK Manager.exe ). In the latest API (4.2) select Documentation for Android SDK . Once downloaded, you can find the documentation in android_sdk_dir/docs . Can I download the entire Android Developer documents to my machine and browse it locally? In the SDK Manager simply select "Documentation for Android SDK" for a recent API.

Answer : Another option might be running the following commands: In order to install java 11: sudo amazon-linux-extras install java-openjdk11 For java 8 you can try: sudo yum install java-1.8.0-openjdk Finally, if you want to switch between java versions run: sudo alternatives --config java Use one of the OpenJDK distributions: https://docs.aws.amazon.com/corretto/latest/corretto-11-ug/downloads-list.html or https://adoptopenjdk.net/?variant=openjdk11&jvmVariant=hotspot

Example: bot discord comment récupérer la pdp de quelqu'un var utlpdp = user.avatarURL

Example: bitwise count total set bits //WAP to find setbits (total 1's in binary ex. n= 5 => 101 => 2 setbits int count { } , num { } ; cin >> num ; while ( num > 0 ) { count = count + ( num & 1 ) ; // num&1 => it gives either 0 or 1 num = num >> 1 ; // bitwise rightshift } cout << count ; //count is our total setbits

Answer : The color picker is not clickable in Android Studio running Flutter( Dart code), see picture below. But i found a work around using the Color class and manually opening color picker. Then pick a color and copy/paste it like this: Here is how i do it: 1. Double tap shift to run search 2. Type Color or Picker 3. Open Color Picker from the search list 4. Copy/paste the HEX color code into your color class. Expert tip: Add color picker to a keyboard shortcut . You can find the settings for Keymap , under File > Settings > Keymap

Example 1: priority queue c++ /* A priority queue maintains a set of elements. The supported operations are insertion and, depending on the type of the queue, retrieval and removal of either the minimum or maximum element. Insertion and removal take O(logn) time, and retrieval takes O(1) time. */ priority_queue < int > q ; q . push ( 3 ) ; // 3 q . push ( 5 ) ; // 3 5 q . push ( 7 ) ; // 3 5 7 q . push ( 2 ) ; // 2 3 5 7 cout << q . top ( ) << "\n" ; // 7 q . pop ( ) ; cout << q . top ( ) << "\n" ; // 5 q . pop ( ) ; q . push ( 6 ) ; cout << q . top ( ) << "\n" ; // 6 q . pop ( ) ; Example 2: priority queue cpp // using GCC 10.2 (C++2a) compiler # include <functional> # include <queue> # include <vector> # include <iostream> template < typename T > void print_queue ( T & q ) { while ( ! q . empty ( ) ) { std :: cou

Answer : imagealphablending( $targetImage, false ); imagesavealpha( $targetImage, true ); did it for me. Thanks ceejayoz. note, the target image needs the alpha settings, not the source image. Edit: full replacement code. See also answers below and their comments. This is not guaranteed to be be perfect in any way, but did achieve my needs at the time. $uploadTempFile = $myField[ 'tmp_name' ] list( $uploadWidth, $uploadHeight, $uploadType ) = getimagesize( $uploadTempFile ); $srcImage = imagecreatefrompng( $uploadTempFile ); $targetImage = imagecreatetruecolor( 128, 128 ); imagealphablending( $targetImage, false ); imagesavealpha( $targetImage, true ); imagecopyresampled( $targetImage, $srcImage, 0, 0, 0, 0, 128, 128, $uploadWidth, $uploadHeight ); imagepng( $targetImage, 'out.png', 9 ); Why do you make things so complicated? the following is what I use and so far

Example: cat in windows Just use type command in Windows as follows: C:\>echo hi > a.txt C:\>echo bye > b.txt C:\>type a.txt b.txt > c.txt C:\>type c.txt

Example 1: declare dynamic array c++ int main ( ) { int size ; std :: cin >> size ; int * array = new int [ size ] ; delete [ ] array ; return 0 ; } Example 2: how to dynamically allocate an array c++ int * a = NULL ; // Pointer to int, initialize to nothing. int n ; // Size needed for array cin >> n ; // Read in the size a = new int [ n ] ; // Allocate n ints and save ptr in a. for ( int i = 0 ; i < n ; i ++ ) { a [ i ] = 0 ; // Initialize all elements to zero. } . . . // Use a as a normal array delete [ ] a ; // When done, free memory pointed to by a. a = NULL ; // Clear a to prevent using invalid memory reference.

Example: cpp online compiler Best Site With auto compile : https : //godbolt.org/z/nEo4j7

Example 1: bulma cdn <link rel= "stylesheet" href= "https://cdn.jsdelivr.net/npm/bulma@0.9.1/css/bulma.min.css" > Example 2: bulma css cdn <!DOCTYPE html> <html> <head> <meta charset= "utf-8" > <meta name= "viewport" content= "width=device-width, initial-scale=1" > <title>Hello Bulma!</title> <link rel= "stylesheet" href= "https://cdn.jsdelivr.net/npm/bulma@0.9.1/css/bulma.min.css" > </head> <body> <section class= "section" > <div class= "container" > <h1 class= "title" > Hello World </h1> <p class= "subtitle" > My first website with <strong>Bulma</strong>! </p> </div> </section> </body> </html> Example 3: getting started with bulma <!DOCTYPE html> &l

Answer : No, JS doesn't have pointers. Objects are passed around by passing a copy of a reference . The programmer cannot access any C-like "value" representing the address of an object. Within a function, one may change the contents of a passed object via that reference, but you cannot modify the reference that the caller had because your reference is only a copy: var foo = {'bar': 1}; function tryToMungeReference(obj) { obj = {'bar': 2}; // won't change caller's object } function mungeContents(obj) { obj.bar = 2; // changes _contents_ of caller's object } tryToMungeReference(foo); foo.bar === 1; // true - foo still references original object mungeContents(foo); foo.bar === 2; // true - object referenced by foo has been modified You bet there are pointers in JavaScript; objects are pointers. //this will make object1 point to the memory location that object2 is pointing at object1 = object2; //this will make