Tutorial by Examples: u

As we knew, WebRTC is all based on the JavaScript development and coding and for more information and examples please refer here and here. And now, let me show you a very simple example to use getUserMedia(); For what getUserMedia() is used? getUserMedia() is used to get the user/visitor's camera...

Prerequisites git clang and clang++ 3.4^ or gcc and g++ 4.8^ Python 2.6 or 2.7 GNU Make 3.81^ Get source Node.js v6.x LTS git clone -b v6.x https://github.com/nodejs/node.git Node.js v7.x git clone -b v7.x https://github.com/nodejs/node.git Build cd node ./configure make -jX su...

In this example we will make use of Redux and React Redux modules to handle our application state and for auto re-render of our functional components., And ofcourse React and React Dom You can checkout the completed demo here In the example below we have three different components and one connecte...

In this tutorial , I will explain how to integrate Google's BigQuery API with web application. My web application is going to get the data using BigQuery and plot a graph using d3.js and Javascript. Each project on Google Developers Console has a clientID and you need to copy the clientID and put i...

The libc crate is 'feature gated' and can only be accessed on nightly Rust versions until it is considered stable. #![feature(libc)] extern crate libc; use libc::pid_t; #[link(name = "c")] extern { fn getpid() -> pid_t; } fn main() { let x = unsafe { getpid() }; ...

Pure functions are self-contained, and have no side effects. Given the same set of inputs, a pure function will always return the same output value. The following function is pure: function pure(data) { return data.total + 3; } However, this function is not pure as it modifies an externa...

let's say you have two users with username chyingp and casper, and want to add them both to group root. usermod chyingp -a -G root usermod casper -a -G root here comes the explanation of -a, -G -a, --append Add the user to the supplementary group(s). Use only with the -G option. -G, --groups...

Removed the commented lines for rewrite in httpd.conf file. LoadModule rewrite_module modules/mod_rewrite.so You can modify .htaccess file your application folder. RewriteEngine on # if a directory or a file exists, use it directly RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_...

If you want to handle uncaught exceptions try to catch them all in onCreate method of you Application class: public class MyApp extends Application { @Override public void onCreate() { super.onCreate(); try { Thread .setDefaultUncaughtExcept...

Being able to understand Error/Exit codes is a fundamental skill for developers on Window's machine. Yet for many, the cryptic hexadecimal code that can be produced on an application exiting with on error can prove to be time consuming and painstaking process for the developer to track down and isol...

<div ng-controller="ExampleController"> <form name="userForm"> Name: <input type="text" name="userName" ng-model="user.name" ng-model-options="{ debounce: 1000 }" /> ...

A common question among new Angular programmers - "What should be the structure of the project?". A good structure helps toward a scalable application development. When we start a project we have two choices, Sort By Type (left) and Sort By Feature (right). The second is better, especially...

Pass in a literal value (not an object), such as a string or number. Child scope gets his own value, if it updates the value, parent scope has his own old value (child scope can't modify the parens scope value). When parent scope value is changed, child scope value will be changed as well. All int...

Pass a method into a directive. It provides a way to execute an expression in the context of the parent scope. Method will be executed in the scope of the parent, you may pass some parameters from the child scope there. You should not use {{...}} for interpolation. When you use & in a directi...

In 32-bit Linux, system calls are usually done by using the sysenter instruction (I say usually because older programs use the now deprecated int 0x80) however, this can take up quite alot of space in a program and so there are ways that one can cut corners in order to shorten and speed things up. ...

Let's say you have an academic system. The bounded contexts would be like this: Admission of new undergraduate students Distribution of students on classrooms considering a schedule of the courses and occupation, size and type of classrooms Management of courses, hierarchies and predecessors of...

The invoice number is used to verify the sale for publishers. Many publishers of paid asset or plugin ask for the invoice number upon request of support. The invoice number is also used as a license key to activate some asset or plugin. The invoice number can be found in two place: After you b...

var httpRequest = new XMLHttpRequest(); httpRequest.onreadystatechange = getData; httpRequest.open('GET', 'https://url/to/some.file', true); httpRequest.send(); function getData(){ if (httpRequest.readyState === XMLHttpRequest.DONE) { alert(httpRequest.responseText); } ...

if a directory contain 2 files: $ ls makefile example.txt and makefile contain the following text %.gz: % gzip $< then you can obtain example.txt.gz by typing in the shell $ make -f makefile example.txt.gz the makefile consist of only one rule that instruct make how to create a...

The following utility can be used for auto-completion of commands: $ which aws_completer /usr/bin/aws_completer $ complete -C '/usr/bin/aws_completer' aws For future shell sessions, consider add this to your ~/.bashrc $ echo "complete -C '/usr/bin/aws_completer' aws" >> ~/.b...