Tutorial by Examples: er

The rule An order lifecycle at any e-commerce follows roughly the workflow: How to apply the technique From the diagram we see that it has the following allowed (positive) transitions: From New to Cancelled From New to Approved From Approved to Cancelled From Approved to Shipped From Shi...

You can also easily wrap all angular modules, which you are going to use, into one module: import { NgModule } from '@angular/core'; import { MdButtonModule, MdSnackBarModule, MdSidenavModule } from '@angular/material'; @NgModule({ imports: [ BrowserAnimationsModule, MdB...

This example will demonstrate the searchable select box in MVC. it uses Ajax to get all records from database as user types the new character. I'll consider Country and its City example to illustrate the functionality of Searchable dropdown box. Code behind is c# with MVC, but its easy to grasp wh...

If one needs related data in a denormalized type, or e.g. only a subset of columns one can use projection queries. If there is no reason for using an extra type, there is the possibility to join the values into an anonymous type. var dbContext = new MyDbContext(); var denormalizedType = from compa...

To load a class we first need to define it. The class is defined by the ClassLoader. There's just one problem, Oracle didn't write the ClassLoader's code with this feature available. To define the class we will need to access a method named defineClass() which is a private method of the ClassLoader....

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...

It's possible to use JoinAlias method to join several tables. It's useful when it's needed to specify some property from the joined table in the select statement: Customer customerAlias = null; Organization organizationAlias = null; IList<Customer> customers = session.QueryOver(() => c...

WebDriver, The main interface to use for testing, which represents an idealised web browser. The methods in this class fall into three categories: Control of the browser itself Selection of WebElements Debugging aids Key methods are get(String), which is used to load a new web page, and the ...

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...

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(...

Theme: A theme is required for material components to work properly within the application. Angular Material 2 provides four prebuilt themes: deeppurple-amber indigo-pink pink-bluegrey purple-green If you are using Angular CLI, you can import one of the prebuilt themes in style.css. @i...

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 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...

Using the dynamic variable %Random%, we can get a random integer from 0 to 32767. For example: echo %random% This obviously, returns an integer from 0 to 32767. But sometimes we want it to be in a specific range, say from 1 to 100. Generating Random Numbers Within Specific Range The basic me...

The model view controller is a very common design pattern that has been around for quite some time. This pattern focuses on reducing spaghetti code by separating classes into functional parts. Recently I have been experimenting with this design pattern in Unity and would like to lay out a basic exam...

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 ...