Tutorial by Examples: l

First Execute CREATE EXTENSION DBLINK; Then INSERT INTO <SCHEMA_NAME>.<TABLE_NAME_1> SELECT * FROM DBLINK( 'HOST=<IP-ADDRESS> USER=<USERNAME> PASSWORD=<PASSWORD> DBNAME=<DATABASE>', 'SELECT * FROM <SCHEMA_NAME>.<TABLE_NAME_2...

Installation CocoaPods CocoaPods is a dependency manager for Cocoa projects. You can install it with the following command: $ gem install cocoapods CocoaPods 1.1.0+ is required to build Alamofire 4.0.0+. To integrate Alamofire into your Xcode project using CocoaPods, specify it in your Po...

A very useful and logical follow-up to histograms and density plots would be the Empirical Cumulative Distribution Function. We can use the function ecdf() for this purpose. A basic plot produced by the command plot(ecdf(rnorm(100)),main="Cumulative distribution",xlab="x") wo...

In application/hooks folder, create a file with name Blocker.php and paste the below code. <?php class Blocker { function Blocker(){ } /** * This function used to block the every request except allowed ip address */ function requestBlocker(){ ...

Android supports fingerprint api from Android 6.0 (Marshmallow) SDK 23 To use this feature in your app, first add the USE_FINGERPRINT permission in your manifest. <uses-permission android:name="android.permission.USE_FINGERPRINT" /> Here the procedure to follow ...

Apache JMeter segregated all the components into following groups based on their functionality: Test Plan: Starting point for scripting. JMeter saves the Test Plan in .jmx format. You add components to the Test Plan by Right Click on the Test Pand and navigating to the component you want to add. ...

In mysqld.cnf or equivalent: [mysql] prompt = '\u@\h [\d]> ' This achieves a similar effect, without having to deal with .bashrc's.

<?php if( get_field('text_field') ): ?> <?php the_field('text_field'); ?> <?php endif; ?> Here we use get_field() to determine if a value exists, and the_field() to echo it.

When creating the project You should check "Include UI Tests" in the project creation dialog. After creating the project If you missed checking UI target while creating project, you could always add test target later. Setps: While project open go to File -> New -> Target Fi...

When Accessibility enabled in Utilities Select storyboard. Expand the Utilities Select Identity Inspector Select your element on storyboard Add new Accessibility Identifier (in example addButton) When Accessibility disabled in Utilities Select storyboard. Expand the Utilities Select...

In a test you can disable animations by adding in setUp: app.launchEnvironment = ["animations": "0"] Where app is instance of XCUIApplication.

Lunch application for testing override func setUp() { super.setUp() let app = XCUIApplication() app.launch() } Terminating application func testStacOverFlowApp() { app.terminate() }

Snippet from MyExampleFile.xaml <TextBlock Foreground="{ThemeResource SystemControlBackgroundAccentBrush}" Text="This is a colored textbox that use the Accent color of your Windows 10"/> <TextBlock Foreground="{ThemeResource SystemControlBackgroundBa...

sample json to update { "student":{"name":"Rahul", "lastname":"sharma"}, "marks":{"maths":"88"} } To update the elements value in the json we need to assign the value and update. try { // Create a new in...

if( function_exists('acf_add_options_page') ) { acf_add_options_page(); } Add the above code to functions.php and an options page named 'Options' will appear in your Wordpress admin area. You now need to asign some custom fields to the page.

Aliases are named shortcuts of commands, one can define and use in interactive bash instances. They are held in an associative array named BASH_ALIASES. To use this var in a script, it must be run within an interactive shell #!/bin/bash -li # note the -li above! -l makes this behave like a login s...

<canvas id="c" width="400" height="400"></canvas> var canvas = new fabric.Canvas("c"); var text = new fabric.Textbox('Hello world From Fabric JS', { width:250, cursorColor :"blue", top:10, ...

To generate samples of cryptographically random data: final byte[] sample = new byte[16]; new SecureRandom().nextBytes(sample); System.out.println("Sample: " + DatatypeConverter.printHexBinary(sample)); Produces output similar to: Sample: E4F14CEA2384F70B706B53A6DF8C5EFE Note...

Performance testing is a subject/process/testing methodology but not a tool to setup. It includes the following core activities: Identify Test Environment Identify Performance Acceptance Criteria Plan and Design Tests Configure Test Environment Implement Test Design Execute Tests Analyze, ...

To generate key pairs using different algorithms and key sizes: final KeyPairGenerator dhGenerator = KeyPairGenerator.getInstance("DiffieHellman"); final KeyPairGenerator dsaGenerator = KeyPairGenerator.getInstance("DSA"); final KeyPairGenerator rsaGenerator = KeyPairGenerator...