Tutorial by Examples: re

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

The REGEXP (or its synonym, RLIKE) operator allows pattern matching based on regular expressions. Consider the following employee table: +-------------+-------------+-------------+--------------+----------+ | EMPLOYEE_ID | FIRST_NAME | LAST_NAME | PHONE_NUMBER | SALARY | +-------------+----...

Just add these lines to the initialization RecyclerView mRecyclerView = (RecyclerView) view.findViewById(recyclerView); mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); mRecyclerView.addItemDecoration(new DividerItemDecoration(getActivity(), DividerItemDecoration.VERTICAL))...

By putting multiple figure handles into a graphics array, multiple figures can be saved to the same .fig file h(1) = figure; scatter(rand(1,100),rand(1,100)); h(2) = figure; scatter(rand(1,100),rand(1,100)); h(3) = figure; scatter(rand(1,100),rand(1,100)); savefig(h,'ThreeRandomScatterp...

The Symfony Installer is a command line tool that helps you to create new Symfony applications. It requires PHP 5.4 or higher. Downloading and installing the Symfony Installer on Linux / MacOS Open a terminal and execute the following commands: sudo mkdir -p /usr/local/bin sudo curl -LsS https:/...

Caching Online Images Using AlamofireImage. It works on top of Alamofire in Swift. Install AlamofireImage using cocoapods pod 'AlamofireImage', '~> 3.1' SetUp: Import AlamofireImage and Alamofire SetUp the Image cache: let imageCache = AutoPurgingImageCache( memoryCapacity: 111_111_111,...

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....

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...

You can try Azure Functions for free by accessing the link: Try Azure Functions It will open the following page: For this trial, you can create your functions using C# or JavaScript, however Azure Functions also supports F#, Node.js, Python, PHP, batch, bash, or any executable. After selection ...

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...

Gin is a web framework written in Golang. It features a martini-like API with much better performance, up to 40 times faster. If you need performance and good productivity, you will love Gin. There will be 8 packages + main.go controllers core libs middlewares public routers services...

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.

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 ...

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...

This is a tutorial to create a hello world example: Used for this example: Android Studio 2.3; To Start use Android Studio to create a new Project with an empty activity. Then we add some simple functionality to the App that we can test: We add a button which when clicks displays "Hello World...

This code will prompt you to create the directory with :w, or just do it with :w!: augroup vimrc-auto-mkdir autocmd! autocmd BufWritePre * call s:auto_mkdir(expand('<afile>:p:h'), v:cmdbang) function! s:auto_mkdir(dir, force) if !isdirectory(a:dir) \ && (a:f...

There's two ways to create a ByteBuffer, where one can be subdivided again. If you have an already existing byte[], you can "wrap" it into a ByteBuffer to simplify processing: byte[] reqBuffer = new byte[BUFFER_SIZE]; int readBytes = socketInputStream.read(reqBuffer); final ByteBuffer ...