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You can do more than just print text. print also has several parameters to help you. Argument sep: place a string between arguments. Do you need to print a list of words separated by a comma or some other string? >>> print('apples','bannas', 'cherries', sep=', ') apple, bannas, cherries...

This example will be how to install from master and will be using @angular/cli as well. Make a new project with @angular/cli: ng new my-master-app If you haven't installed @angular/cli, use this command: npm install -g @angular/cli Install from master: npm install --save @angular/a...

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(...

If you have your data with each month of data arranged in rows like so: start by creating quarterly sums in the adjacent columns, D & E in our example. Start with the third row in the new column or the first quarter you want to create, in this example we'll use March 31st (2000-03-31). Use t...

Given a pipe that reverse a string import { Pipe, PipeTransform } from '@angular/core'; @Pipe({ name: 'reverse' }) export class ReversePipe implements PipeTransform { transform(value: string): string { return value.split('').reverse().join(''); } } It can be tested configuring th...

hero.component.html <form (ngSubmit)="submit($event)" [formGroup]="form" novalidate> <input type="text" formControlName="name" /> <button type="submit">Show hero name</button> </form> hero.component.ts import...

Components will render in their respective selector, so you can use that to nest components. If you have a component that shows a message: import { Component, Input } from '@angular/core'; @Component({ selector: 'app-required', template: `{{name}} is required.` }) export class RequiredC...

Given a directive that highlights text on mouse events import { Directive, ElementRef, HostListener, Input } from '@angular/core'; @Directive({ selector: '[appHighlight]' }) export class HighlightDirective { @Input('appHighlight') // tslint:disable-line no-input-rename highlightColor: str...

Modules can be nested by using the imports parameter of @NgModule decorator. We can create a core.module in our application that will contain generic things, like a ReservePipe (a pipe that reverse a string) and bundle those in this module: import { CommonModule } from '@angular/common'; import {...

Given a service that can login a user: import 'rxjs/add/operator/toPromise'; import { Http } from '@angular/http'; import { Injectable } from '@angular/core'; interface LoginCredentials { password: string; user: string; } @Injectable() export class AuthService { constructor(pri...

Here is how to create your own singleton class for toast messages, If your application need to show success, warning and the danger messages for different use cases you can use this class after you have modified it to your own specifications. public class ToastGenerate { private stati...

The MyFrame class the extends JFrame and also contains the main method import javax.swing.JFrame; public class MyFrame extends JFrame{ //main method called on startup public static void main(String[] args) throws InterruptedException { //creates a frame window ...

In this example, base class Singleton provides getMessage() method that returns "Hello world!" message. It's subclasses UppercaseSingleton and LowercaseSingleton override getMessage() method to provide appropriate representation of the message. //Yeah, we'll need reflection to pull this ...

The below example uses Android.Runtime.InputStreamInvoker and Android.Runtime.OutputStreamInvoker types obtain Java.IO.InputStream and Java.IO.OutputStream. Once we have a Java.IO.InputStream instance, we can use its .Available() method to get the number of available response bytes which we can use...

Grouping with the data.table package is done using the syntax dt[i, j, by] Which can be read out loud as: "Take dt, subset rows using i, then calculate j, grouped by by." Within the dt statement, multiple calculations or groups should be put in a list. Since an alias for list() is .(), bo...

parse_url(): This function parses a URL and returns an associative array containing any of the various components of the URL that are present. $url = parse_url('http://example.com/project/controller/action/param1/param2'); Array ( [scheme] => http [host] => example.com ...

explode(): Returns an array of strings, each of which is a substring of string formed by splitting it on boundaries formed by the string delimiter. This function is pretty much straight forward. $url = "http://example.com/project/controller/action/param1/param2"; $parts = explode(...