Tutorial by Examples: s

Preemptive basic authentication is the practice of sending http basic authentication credentials (username and password) before a server replies with a 401 response asking for them. This can save a request round trip when consuming REST apis which are known to require basic authentication. As descr...

Using HttpClient as RestTemplate's underlying implementation to create HTTP requests allows for automatic handling of basic authentication requests (an http 401 response) when interacting with APIs. This example shows how to configure a RestTemplate to achieve this. // The credentials are stored he...

get_template_part( 'foo/bar', 'page'); will require 'bar-page.php' from the directory 'foo'.

Phalcon uses db service by default to obtain connection to databases. Assuming you have an conguration file with database field set up, you can include or autoload following code to obtain connection with database for your project: $di->set('db', function () use ($config) { $dbconf = $conf...

Phalcon builds up some information about tables it is using, so it is possible to validate data being inserted to them without implementing everything by hand. Those are meta data for models. To speed up and prevent Phalcon from building Meta Data every time page is refreshed, it is possible to cach...

<?php //Create a new SQLite3 object from a database file on the server. $database = new SQLite3('mysqlitedb.db'); //Query the database with SQL $results = $database->query('SELECT bar FROM foo'); //Iterate through all of the results, var_dumping them onto the page while ($row = $resu...

In addition to using LIMIT SQL statements you can also use the SQLite3 function querySingle to retrieve a single row, or the first column. <?php $database = new SQLite3('mysqlitedb.db'); //Without the optional second parameter set to true, this query would return just //the first column of ...

Assume that we have a system that sends out daily reports over email in the form of attached CSV files and that we want to access these. function getCsvFromGmail() { // Get the newest Gmail thread based on sender and subject var gmailThread = GmailApp.search("from:[email protected] sub...

Using core debugger Node.js provides a build in non graphical debugging utility. To start the build in the debugger, start the application with this command: node debug filename.js Consider the following simple Node.js application contained in the debugDemo.js 'use strict'; function addTwoN...

To get Nightwatch working, you'll need a local copy of selenium which is a command-and-control server which manages automated browser instances. You'll also need a web browser which selenium can control, such as chromedriver or phantomjs. Add the following devDependencies to your package.json: { ...

In the root of your application should be a package.json file, where you can define scripts and devDependencies. { "name": "myapp", "version": "1.0.0", "scripts": { "start": "meteor --settings settings-development.json&q...

A basic Nightwatch installation for Meteor will have the following directories and files installed. /myapp /myapp/.meteor/nightwatch.json /client/main.html /client/main.js /client/main.css /tests /tests/nightwatch /tests/nightwatch/assertions /tests/nightwatch/commands /tests/nightwatch/da...

Nightwatch accepts a second globals.json configuration file which injects data into the test runner itself, very similar to how Meteor.settings makes data from the command line available throughout the app. globals.json { "default" : { "url" : "http://localhost:300...

Readable streams can be "piped," or connected, to writable streams. This makes data flow from the source stream to the destination stream without much effort. var fs = require('fs') var readable = fs.createReadStream('file1.txt') var writable = fs.createWriteStream('file2.txt') rea...

The first part of this example explains how to implement it. In the second, I will explain how it works. This tries to be a general example. The template for the map (see step 3) and the example functions are fully customizable. ################################# IMPLEMENTATION #####################...

Radio Buttons allow you to let the user choose one element of those given. There are two ways to declare a RadioButton with a text besides it. Either by using the default constructor RadioButton() and setting the text with the setText(String) method or by using the other constructor RadioButton(Stri...

A ToggleGroup is used to manage the RadioButtons so that just one in each group can be selected at each time. Create a simple ToggleGroup like following: ToggleGroup group = new ToggleGroup(); After creating a Togglegroup it can be assigned to the RadioButtons by using setToggleGroup(ToggleGrou...

Typically, when one of the RadioButtons in a ToggleGroup is selected the application performs an action. Below is an example which prints the user data of the selected RadioButton which has been set with setUserData(Object). radioButton1.setUserData("awesome") radioButton2.setUserData(&q...

Let's say the second RadioButton out of three is pre-selected with setSelected(Boolean), the focus is still at the first RadioButton by default. To change this use the requestFocus() method. radioButton2.setSelected(true); radioButton2.requestFocus();

Sometimes we need a visual hint to indicate the return status of previous command. The following snippet make put it at the head of the PS1. Note that the __stat() function should be called every time a new PS1 is generated, or else it would stick to the return status of last command of your .bashr...