To enable - type:
:set number or :set nu.
To disable - type:
:set nonumber or :set nonu.
To enable enumerating relative to the cursor location - type:
:set relativenumber.
To disable enumerating relative to the cursor location - type:
:set norelativenumber.
Note: To change whether the curren...
To create a NuGet package from a project, run this command from a directory that contains project.json:
dotnet pack
The resulting .nupkg file will be named and versioned according to the properties in project.json. If there are multiple frameworks targeted in the project file, the package will s...
If you don't need automatically generated apk files with unaligned suffix (which you probably don't), you may add the following code to build.gradle file:
// delete unaligned files
android.applicationVariants.all { variant ->
variant.assemble.doLast {
variant.outputs.each { output ->...
Note: Following instructions are written for Python 2.7 (unless specified): instructions for Python 3.x are similar.
WINDOWS
First, download the latest version of Python 2.7 from the official Website (https://www.python.org/downloads/). Version is provided as an MSI package. To install it manu...
As of Java 8, there are default methods on the Map.Entry interface to allow sorting of map iterations.
Java SE 8
Map<String, Integer> numberOfEmployees = new HashMap<>();
numberOfEmployees.put("executives", 10);
numberOfEmployees.put("human ressources", 32);
numb...
public class ConnectSocketExample {
private int HTTP_PORT = 80;
/**
* example method to create unconnected socket
* then connect to it
* at end return connected socket
*
* @param httpHostName - endpoint host name fot socket connection
* @throws IOEx...
A macro is a series of keystrokes meant to be "played back" by Vim without any delay. Macros can be stored in registers or variables, bound to keys, or executed on the command line.
Here is a simple macro that uppercases the third word on a line:
0wwgUiw
That macro could be recorded i...
As ES6 introduced Symbols, which are both unique and immutable primitive values that may be used as the key of an Object property, instead of using strings as possible values for an enum, it's possible to use symbols.
// Simple symbol
const newSymbol = Symbol();
typeof newSymbol === 'symbol' // t...
5.1
This Example demonstrates how to automatically assign a value to each entry in an enum list. This will prevent two enums from having the same value by mistake. NOTE: Object.freeze browser support
var testEnum = function() {
// Initializes the enumerations
var enumList = [
&q...
SpriteKit functionality can be implemented in a subclass of SKScene. For example, a game may implement the main game functionality within an SKScene subclass called GameScene.
In Swift:
import SpriteKit
class GameScene: SKScene {
override func didMoveToView(view: SKView) {
/* Co...
Chaining assignments as part of a var declaration will create global variables unintentionally.
For example:
(function foo() {
var a = b = 0;
})()
console.log('a: ' + a);
console.log('b: ' + b);
Will result in:
Uncaught ReferenceError: a is not defined
'b: 0'
In the above examp...
class SomeClass {
public function __invoke($param1, $param2) {
// put your code here
}
}
$instance = new SomeClass();
$instance('First', 'Second'); // call the __invoke() method
An object with an __invoke method can be used exactly as any other function.
The __invoke meth...
Mapping
Applying a function to all elements of an array :
array_map('strtoupper', $array);
Be aware that this is the only method of the list where the callback comes first.
Reducing (or folding)
Reducing an array to a single value :
$sum = array_reduce($numbers, function ($carry, $number) {
...
After your service worker is registered, the browser will try to install & later activate the service worker.
Install event listener
this.addEventListener('install', function(event) {
console.log('installed');
});
Caching
One can use this install event returned to cache the assets ne...
MySQL offers a number of different numeric types. These can be broken down into
GroupTypesInteger TypesINTEGER, INT, SMALLINT, TINYINT, MEDIUMINT, BIGINTFixed Point TypesDECIMAL, NUMERICFloating Point TypesFLOAT, DOUBLEBit Value TypeBIT
FLOAT and DOUBLE represent approximate data types.
TypeStoragePrecisionRangeFLOAT4 bytes23 significant bits / ~7 decimal digits10^+/-38DOUBLE8 bytes53 significant bits / ~16 decimal digits10^+/-308
REAL is a synonym for FLOAT. DOUBLE PRECISION is a synonym for DOUBLE.
Although MySQL also permits...
WebSocket provides a duplex/bidirectional communication protocol over a single TCP connection.
the client opens a connection to a server that is listening for a WebSocket request
a client connects to a server using a URI.
A server may listen to requests from multiple clients.
Server Endpoint...
