Tutorial by Examples: re

At it's most basic level, acceptance testing is essentially black-box testing, which is fundamentally concerned with testing inputs and outputs of a closed system. As such, there are three essential features to acceptance testing: locating a resource, reading data, and writing data. When it comes to...

To get products from the database, you need to use Magento 2's repository design pattern. Each module can be bundled with it's own repositories, and the Product Catalog module is not any different. You can use dependency injection in your class to access the repository. A working example would look...

Here we use the object that we passed to render_template to display the pages, the current active page, and also a previous and next buttons if you can go to the previous/next page. <!-- previous page --> {% if users_list.has_prev %} <li> <a href="{{ url_for('users', page...

// An alert dialog $scope.showAlert = function() { var alertPopup = $ionicPopup.alert({ title: 'Don\'t eat that!', template: 'It might taste good' }); alertPopup.then(function(res) { console.log('Hello your first example.'); }); }; });

This example shows how to retrieve an ID of a newly created item using SharePoint REST API. Note : listName - This variable contains name of you list. newItemBody - This will be your request body for adding new item in list. e.g. var newItemBody = { __metadata: { 'type': 'SP.Data.MyListNameIte...

#lang racket (letrec ([sum-of-list (λ (l) (if (null? l) 0 (+ (car l) (sum-of-list (cdr l)))))]) (sum-of-list '(1 2 3 4 5))) ;; => 15 It is possible to write mutually recursive functions with letrec: #lang ...

#lang racket (require mzlib/etc) ((rec sum-of-list (λ (l) (if (null? l) 0 (+ (car l) (sum-of-list (cdr l)))))) '(1 2 3 4 5)) ;; => 15 ;; Outside of the rec form, sum-of-list gives an error: ;; sum-of-list: undefined; ;; cannot reference an identifier befor...

It is common practice to use higher order functions instead of recursion, if there is a higher order function which expresses the right recursion pattern. In our case, sum-of-numbers can be defined using foldl: #lang racket (define (sum-of-numbers l) (foldl + 0 l)) (sum-of-numbers '(1 2 3 4 5)...

webpack 2 introduces tree shaking which can remove unused code when ES2015 modules are used to import and export code. Install npm install babel-preset-es2015-webpack --save-dev Usage in .babelrc: { "presets": [ "es2015-webpack" ] }

You have to add a div with the class .row-height inside the row, and also add .col-height to the columns. If you want to restrict the effect to a certain media query, just use the responsive .row-height and .col-height classes: for example .row-sm-height with .col-sm-height. CSS version: .row-heig...

Since Groovy 1.8 a convenient memoize() method is added on closures: // normal closure def sum = { int x, int y -> println "sum ${x} + ${y}" return x + y } sum(3, 4) sum(3, 4) // prints // sum 3 + 4 // sum 3 + 4 // memoized closure def sumMemoize = sum.memoize() ...

Suppose you are searching for a Title Case pattern in a large text file and you want to edit a incorrect regular expression: First, go into Ex mode by typing q: You will now see all the commands that you typed in commandline mode, press j to go the regular expression you want to edit (/\v[A-Z]\w...

public ActionResult Details( string product) { .... if (productNotFound) { // http://www.eidias.com/blog/2014/7/2/mvc-custom-error-pages Response.Clear(); Response.TrySkipIisCustomErrors = true; Response.Write(product + " product not exists"); ...

Consider a one to one bidirectional relationship between employee and desk. Employee.java @Entity public class Employee { @TableGenerator(name = "employee_gen", table = "id_gen", pkColumnName = "gen_name", valueColumnName = "gen_val", allocationSize...

npm install -g rethinkdb

const r = require("rethinkdb"); r.connect({host: 'localhost', port: 28015}, (conn) => console.log(conn)) // Or as a promise let rdb_conn; r.connect({host: 'localhost', port: 28015}).then((conn) => { rdb_conn = conn; }).then(() => { // Continue to use rdb_conn }); ...

r.connect({host: 'localhost', port: 28015}) .then((conn) => { return r.dbCreate("stackoverflow").run(conn); }).then((result) => { console.log(result); });

r.connect({host: 'localhost', port: 28015}) .then((conn) => { return r.db("stackoverflow").tableCreate("examples").run(conn); }).then((result) => { console.log(result); });

import pygame background_colour = (255,255,255) # For the background color of your window (width, height) = (300, 200) # Dimension of the window screen = pygame.display.set_mode((width, height)) # Making of the screen pygame.display.set_caption('Tutorial 1') # Name for the window screen.fil...

The following code can be found in a demo here: https://ellie-app.com/mbFwJT9jD3/0 import Html exposing (..) import Json.Decode exposing (Decoder) payload = """ [{ "id": 0, "name": "Adam Carter", "work": "Uni...