Tutorial by Examples: en

Jsoup can be used to manipulate or extract data from a file on local that contains HTML. filePath is path of a file on disk. ENCODING is desired Charset Name e.g. "Windows-31J". It is optional. // load file File inputFile = new File(filePath); // parse file as HTML document ...

Menus act like all standard control items. They have an action which is the function to be called and a target which is the object to send the function to. If the target is set to an object then when a user selects a menu item it the action method will be sent to the target object. If the menu item ...

first add the OkHttp to the gradle build file of the app module compile 'com.squareup.picasso:picasso:2.5.2' compile 'com.squareup.okhttp:okhttp:2.4.0' compile 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.0.2' Then make a class extending Application import android.app.Application; ...

Step 1: Create your GitHub account If you already have a GitHub account, please proceed to Step 2. Otherwise, please follow below: 1.a Go to Github page. 1.b Enter your desired username, your email address and then your desired password. Afterwards, click the Sign up for GitHub button. Step 2:...

Note: For brevity, the commands use here-strings (<<<) and ANSI C-quoted strings ($'...'). Both these shell features work in bash, ksh, and zsh. # GNU Sed $ sed '1 a appended text' <<<'line 1' line 1 appended text # BSD Sed (multi-line form) sed '1 a\ appended text'...

// add an item to a menu menu.addItem(item) // remove and item from a menu menu.removeItem(item)

If you care about your indices (yes, that's the plural of index), you should maintain them, especially if you do frequent inserts or deletes that affect them. Azure Automation provides an almost ready runbook that you can use and schedule to perform automated index rebuilding. Here's what you have ...

Example for a functional view to create an object. Excluding comments and blank lines, we need 15 lines of code: # imports from django.shortcuts import render_to_response from django.http import HttpResponseRedirect from .models import SampleObject from .forms import SampleObjectForm # vie...

The above example only works if your tasks are entirely standard tasks. You do not add extra context here, for example. Let's make a more realistic example. Assume we want to add a page title to the template. In the functional view, this would work like this - with just one additional line: def cr...

The true power of generic views unfolds when you combine them with Mixins. A mixin is a just another class defined by you whose methods can be inherited by your view class. Assume you want every view to show the additional variable 'page_title' in the template. Instead of overriding the get_context...

How to center an element, column, or content inside a column works differently in Bootstrap 4. Horizontal Center text-center is still used for display:inline elements mx-auto replaces center-block to center display:block elements offset-* or mx-auto can be used to center grid columns mx-aut...

typealias Parents = Pair<Person, Person> typealias Accounts = List<Account>

HeroChildComponent has two input properties, typically adorned with @Input decorations. import { Component, Input } from '@angular/core'; import { Hero } from './hero'; @Component({ selector: 'hero-child', template: ` <h3>{{hero.name}} says:</h3> <p>I, {{hero.nam...

When creating a model for a table that has a composite primary key, additional work is required on the Object for the model Entity to respect those constraints. The following example SQL table and Entity demonstrates the structure to store a review left by a customer for an item in an online store....

First you add System.Security.Cryptography and System.IO to your project public string GetSha1Hash(string filePath) { using (FileStream fs = File.OpenRead(filePath)) { SHA1 sha = new SHA1Managed(); return BitConverter.ToString(sha.ComputeHash(fs...

first you add System.Security.Cryptography namespace to your project public string GetSha1Hash(string filePath) { using (FileStream fs = File.OpenRead(filePath)) { SHA1 sha = new SHA1Managed(); return BitConverter.ToString(sha.ComputeHash(fs)); ...

public static string TextToHash(string text) { var sh = SHA1.Create(); var hash = new StringBuilder(); byte[] bytes = Encoding.UTF8.GetBytes(text); byte[] b = sh.ComputeHash(bytes); foreach (byte a in b) { var h = a.ToString(&...

After adding the GreenDao library dependency and Gradle plugin, we need to first create an entity object. Entity An entity is a Plain Old Java Object (POJO) that models some data in the database. GreenDao will use this class to create a table in the SQLite database and automatically generate helpe...

The code example below demonstrate how you can get a lighter and darker shade of a given color, useful in applications having dynamic themes For Darker Color + (UIColor *)darkerColorForColor:(UIColor *)c { CGFloat r, g, b, a; if ([c getRed:&r green:&g blue:&b alpha:&a]) ...

In Sprite-Kit, there is the concept of collisions which refers to the SK physics engine handling how physics objects interact when they collide i.e. which ones bounce off which other ones. It also has the concept of contacts, which is the mechanism by which your program gets informed when 2 physics...