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An image represents a rectangular grid of picture elements (pixel). In the image package, the pixel is represented as one of the color defined in image/color package. The 2-D geometry of the image is represented as image.Rectangle, while image.Point denotes a position on the grid. The above figur...

Firstly you need to download and install the VSCode. This VSCode latest version is available for download in its Official website . After download the VSCode you should install and open it. Introduction of Extensions in VSCode VSCode is a open editor so it provide editor for all languages but ...

VsCode is unable to create the ionic project because it is a code editor.So you can create your ionic project by CLI or cmd. create your project by below command $ ionic start appName blank Above command use to create blank template ionic application. Ionic2 provide three type of templates blank...

> Run and Debug in Chrome To run the ionic project use below command in terminal or cmd or CLI $ ionic serve For debugging the ionic project ,Firstly you should add extension (Debugger for chrome) and then configure launch.json file like this. { "version": "0...

Some digital image processing algorithm such as edge detection, information carried by the image intensity (i.e. grayscale value) is sufficient. Using color information (R, G, B channel) may provides slightly better result, but the algorithm complexity will be increased. Thus, in this case, we need ...

$ provides an easy and a concise method to concatenate multiple strings. var str1 = "text1"; var str2 = " "; var str3 = "text3"; string result2 = $"{str1}{str2}{str3}"; //"text1 text3"

Since BackAndroid is deprecated. Use BackHandler instead of BackAndroid. import { BackHandler } from 'react-native'; {...} ComponentWillMount(){ BackHandler.addEventListener('hardwareBackPress',()=>{ if (!this.onMainScreen()) { this.goBack(); return true; ...

In the following example echo on will take effect after the end of the brackets context is reached: @echo off ( echo on echo ## ) echo $$ In order to "activate" echo on in a brackets context (including FOR and IF commands) you can use FOR /f macro : @echo off setlocal ...

Anonymous functions technique uses the fact that CALL command uses internally GOTO when subroutine is called and abusing help message printing with variable double expansion: @echo off setlocal set "anonymous=/?" call :%%anonymous%% a b c 3>&1 >nul if "%0" == ...

Lets have the following file called library.cmd : @echo off echo -/-/- Batch Functions Library -/-/- :function1 echo argument1 - %1 goto :eof To execute only the :function1 without the code of the rest of the file you should put a label :function1 in the caller bat and use it lik...

First is first, ensure that USE_TZ = True in your settings.py file. Also set a default time zone value to TIME_ZONE such as TIME_ZONE='UTC'. View a complete list of timezones here. If USE_TZ is False, TIME_ZONE will be the time zone that Django will use to store all datetimes. When USE_TZ is enable...

Python's datetime.datetime objects have a tzinfo attribute that is used to store time zone information. When the attribute is set the object is considered Aware, when the attribute is not set it is considered a Naive. To ensure that a timezone is naive or aware, you can use .is_naive() and .is_awar...

Declaring a DLL procedure to work with different VBA versions: Option Explicit #If Win64 Then Private Declare PtrSafe Sub xLib "Kernel32" Alias "Sleep" (ByVal dwMilliseconds As Long) #ElseIf Win32 Then Private Declare Sub apiSleep Lib "Kernel32" Ali...

val foo : Int by lazy { 1 + 1 } println(foo) The example prints 2.

class MyDelegate { operator fun getValue(owner: Any?, property: KProperty<*>): String { return "Delegated value" } } val foo : String by MyDelegate() println(foo) The example prints Delegated value

This module can be used to : Create a new element. Delete an element from HTML document. Place element in HTML document. Iinitialisation To be able to use the dom-construct module we need to load it as fallow : require(["dojo/dom-construct"], function(domConstruct){...

General-purpose stopwatch for timing how long a function takes to run: object Benchmark { fun realtime(body: () -> Unit): Duration { val start = Instant.now() try { body() } finally { val end = Instant.now() return Duration.b...

<View style={[(this.props.isTrue) ? styles.bgcolorBlack : styles.bgColorWhite]}> If the value of isTrue is true then it will have black background color otherwise white.

PGSQL> SELECT COALESCE(NULL, NULL, 'HELLO WORLD'); coalesce -------- 'HELLO WORLD'

PGSQL> SELECT COALESCE(NULL, NULL, 'first non null', null, null, 'second non null'); coalesce -------- 'first non null'