Tutorial by Topics: ion

ActionCable was available for Rails 4.x, and was bundled into Rails 5. It allows easy use of websockets for realtime communication between server and client.

Approach with sealed trait and case objects is preferred because Scala enumeration has a few problems: Enumerations have the same type after erasure. Compiler doesn't complain about “Match is not exhaustive", if case is missed it will fail in runtime scala.MatchError: def isWeekendWith...

Android Marshmallow introduced Runtime Permission model. Permissions are categorized into two categories i.e. Normal and Dangerous Permissions. where dangerous permissions are now granted by the user at run time. From sdk 23 Android requires runtime permissions for permissions on devices runni...

Random number generation in C++ is provided by the <random> header. This header defines random devices, pseudo-random generators and distributions. Random devices return random numbers provided by operating system. They should either be used for initialization of pseudo-random generators or...

A set is a collection of items which can be anything. Whatever operator we need to work on these sets are in short the set operators and the operation is also known as set operation. Basic set operation includes Union, Intersection as well as addition, subtraction, etc. Group-Object Gr...

Localization is feature provided by iOS which translates your app into multiple language.For Localisation,Internationalization is necessary.Internationalization is process of making iOS app able to adapt different culture,language and regions.

myApp.controller('MyController', function($scope) { ... }); // non-minified code myApp.controller('MyController', ['$scope', function($scope) { ... }]); //support minification function MyController(){} MyController.$inject = ['$scope']; myApp.controller('MyController', MyController)...

With pthreads v3 pthreads can only be loaded when using the cli SAPI, thus it is a good practice to keep the extension=pthreads.so directive in php-cli.ini ONLY, if you are using PHP7 and Pthreads v3. If you are using Wamp on Windows, you have to configure the extension in php.ini : Open php...

Extension methods are methods (Sub or Function) that add functionality to a Type (which may be a Reference Type or a Value Type). These Types may or may not be owned by you. They may or may not be in the same assembly as the Type they are intended to modify. You can allow an opt-in to your exte...

iOS notifications are a simple and powerful way to send data in a loosely coupled way. That is, the sender of a notification doesn't have to care about who (if anyone) receives the notification, it just posts it out there to the rest of the app and it could be picked up by lots of things or nothing ...