Tutorial by Examples: d

To be able to work with web-application on Android device using Selenium below pre-conditions should be met: Android SDK installed on computer Chrome browser installed on Android device Debugging mode enabled on Android device Start adb and chromedriver server with below commands from cmd/Te...

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...

The @HostBinding decorator allows us to programatically set a property value on the directive's host element. It works similarly to a property binding defined in a template, except it specifically targets the host element. The binding is checked for every change detection cycle, so it can change dyn...

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....

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...

y ~ . : Here . is interpreted as all variables except y in the data frame used in fitting the model. It is equivalent to the linear combinations of predictor variables. For example y ~ var1 + var2 + var3+...+var15 y ~ . ^ 2 will give all linear (main effects) and second order interaction terms of t...

The C99 and C11 standards specify the following length modifiers for printf(); their meanings are: ModifierModifiesApplies tohhd, i, o, u, x, or Xchar, signed char or unsigned charhd, i, o, u, x, or Xshort int or unsigned short intld, i, o, u, x, or Xlong int or unsigned long intla, A, e, E, f, F, ...

CREATE USER readonly WITH ENCRYPTED PASSWORD 'yourpassword'; GRANT CONNECT ON DATABASE <database_name> to readonly; GRANT USAGE ON SCHEMA public to readonly; GRANT SELECT ON ALL SEQUENCES IN SCHEMA public TO readonly; GRANT SELECT ON ALL TABLES IN SCHEMA public TO readonly;

Animation below shows what is happening when you use IDataInput interface methods to access data form ByteArray and other classes which implement this interface.

Checkpointing configuration is done in two steps. First, you need to choose a backend. Then, you can specify the interval and mode of the checkpoints in a per-application basis. Backends Available backends Where the checkpoints are stored depends on the configured backend: MemoryStateBackend...

A savepoint stores two things: (a) the positions of all datasources, (b) the states of operators. Savepoints are useful in many circonstances: slight application code updates Flink update changes in parallelism ... As of version 1.3 (also valid for earlier version): checkpoint must be ...

Before 1.2, the only way to persist state/retain a checkpoint after a job termination/cancellation/persistant failure was through a savepoint, which is triggered manually. Version 1.2 introduced persistent checkpoints. Persistent checkpoints behave very much like regular periodic checkpoints except...

import Foundation enum Breed: String { case bulldog = "Bulldog" case doberman = "Doberman" case labrador = "Labrador" } struct Dog { let name: String let breed: String let age: Int }

import Foundation protocol DoggyView: NSObjectProtocol { func startLoading() func finishLoading() func setDoggies(_ doggies: [DoggyViewData]) func setEmpty() }

import Foundation typealias Result = ([Dog]) -> Void class DoggyService { func deliverDoggies(_ result: @escaping Result) { let firstDoggy = Dog(name: "Alfred", breed: Breed.labrador.rawValue, age: 1) let secondDoggy = Dog(name: "Vinny&quot...

import Foundation class DoggyPresenter { // MARK: - Private fileprivate let dogService: DoggyService weak fileprivate var dogView: DoggyView? init(dogService: DoggyService){ self.dogService = dogService } func attachView(_ attach: Bool, view: DoggyView...

import UIKit class DoggyListViewController: UIViewController, UITableViewDataSource { @IBOutlet weak var emptyView: UIView? @IBOutlet weak var tableView: UITableView? @IBOutlet weak var spinner: UIActivityIndicatorView? fileprivate let dogPresenter = DoggyPresenter(dogSe...

You'll often want to assign something to an object if it is None, indicating it has not been assigned. We'll use aDate. The simplest way to do this is to use the is None test. if aDate is None: aDate=datetime.date.today() (Note that it is more Pythonic to say is None instead of == None.) ...