Tutorial by Examples: en

Let's try to look at the differences between client and cluster mode of Spark. Client: When running Spark in the client mode, the SparkContext and Driver program run external to the cluster; for example, from your laptop. Local mode is only for the case when you do not want to use a cluster and in...

let storyboard = UIStoryboard(name: "StoryboardName", bundle: nil) let vc = storyboard.instantiateViewController(withIdentifier: "ViewControllerID") as YourViewController self.present(vc, animated: true, completion: nil)

Cold observable implementation, emits true when TTS engine finishes speaking, starts speaking when subscribed. Notice that API level 21 introduces different way to perform speaking: public class RxTextToSpeech { @Nullable RxTTSObservableOnSubscribe audio; WeakReference<Context> contextR...

@Module class AppModule(val app: Application) { @Provides @Named("the_answer") fun providesTheAnswer(): Int { return 42 } }

class MyClass{ @field:[Inject Named("the_answer")] lateinit var answer: Int } In Android Development, this is the way in which you inject dependencies into Activity, Fragment or any other object that is instantiated directly by the OS. To learn more about the @field: annotation i...

class MyClass @Inject constructor(@Named val answer: Int){ /* The nuts and bolts of your class */ }

If you call plt.legend() or ax.legend() more than once, the first legend is removed and a new one is drawn. According the official documentation: This has been done so that it is possible to call legend() repeatedly to update the legend to the latest handles on the Axes Fear not, though: It ...

In order to clear the selection of those values which are selected using a Select2 drop down,we can use the empty() function. <select id="select2_example"> <option>Option1</option> <option>Option2</option> <option>Option3</option> </select&...

<!-- : Comment This works with both batch script and WSF. The closing tag(-->), only works in WSF. CodeSucessful in both batch and WSF?<!--: CommentTrue<!--: Comment -->False - The closing tag only works for WSF-->False

When you get started with Java or Android, you quickly learn that (0,0) is in the top-left corner. In LibGDX, however, (0,0) is by default in the bottom left corner. Using an Orthographic camera, you can get (0, 0) to be in the top-left corner. Though by default, (0, 0) is in the bottom-left corner...

Here's a simple example to demonstrate that how can we jump/open a specific screen based on the notification. For example, when a user clicks on the notification, the app should open and directly jump to notifications page instead of home page. 'use strict'; import React, { Component } from 'rea...

This calculate current device time and add/subtract difference between real and device time public static Calendar getCurrentRealTime() { long bootTime = networkTime - SystemClock.elapsedRealtime(); Calendar calInstance = Calendar.getInstance(); calInstance.setTimeZone(getUTCTimeZo...

summary {% extends %}: this declares the template given as an argument as the current template's parent. Usage: {% extends 'parent_template.html' %}. {% block %}{% endblock %}: This is used to define sections in your templates, so that if another template extends this one, it'll be able to...

Open Visual Studio and select File Menu -> Open -> Project Next, select Solution File from project folder Project files will be shown in Solution Explorer.

Use LocalDate and ChronoUnit: LocalDate d1 = LocalDate.of(2017, 5, 1); LocalDate d2 = LocalDate.of(2017, 5, 18); now, since the method between of the ChronoUnit enumerator takes 2 Temporals as parameters so you can pass without a problem the LocalDate instances long days = ChronoUnit.DAYS.betw...

service.ts: import { Injectable } from '@angular/core'; @Injectable() export class AppState { public mylist = []; } parent.component.ts: import {Component} from '@angular/core'; import { AppState } from './shared.service'; @Component({ selector: 'parent-example', templ...

parent.component.ts: import {Component} from '@angular/core'; @Component({ selector: 'parent-example', templateUrl: 'parent.component.html', }) export class ParentComponent { mylistFromParent = []; add() { this.mylistFromParent.push({"itemName":"Something&...

event-emitter.component.ts import { Component, OnInit, EventEmitter, Output } from '@angular/core'; @Component({ selector: 'event-emitting-child-component', template: `<div *ngFor="let item of data"> <div (click)="select(item)"> ...

shared.service.ts: import { Injectable } from '@angular/core'; import { Headers, Http } from '@angular/http'; import 'rxjs/add/operator/toPromise'; import { Observable } from 'rxjs/Observable'; import { Observable } from 'rxjs/Rx'; import {Subject} from 'rxjs/Subject'; @Injectable(...

To create a component we add @Component decorator in a class passing some parameters: providers: Resources that will be injected into the component constructor selector: The query selector that will find the element in the HTML and replace by the component styles: Inline styles. NOTE: DO NOT us...