Tutorial by Examples: f

DROP TABLE Database.table_name

You might receive from your peer private key in PPK format, which seems it does not work in OpenSSH (command-line ssh). The client will be asking for the passphrase, because of OpenSSH bug. $ ssh -i mykey.ppk example.com Enter passphrase for mykey.ppk: You need to convert the key to OpenSSH for...

Visual Basic.NET, like most languages, permits recursion, a process by which a function calls itself under certain conditions. Here is a basic function in Visual Basic .NET to compute Fibonacci numbers. ''' <summary> ''' Gets the n'th Fibonacci number ''' </summary> ''' <param na...

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Developers can use admin_bar_menu action to remove items from WordPress admin bar or toolbar. add_action('admin_bar_menu', 'remove_wp_logo_from_admin_bar', 999); function remove_wp_logo_from_admin_bar( $wp_admin_bar ) { $wp_admin_bar->remove_node('wp-logo'); } Above code removes WordPr...

If an integer x is a power of 2, only one bit is set, whereas x-1 has all bits set after that. For example: 4 is 100 and 3 is 011 as binary number, which satisfies the aforementioned condition. Zero is not a power of 2 and has to be checked explicitly. boolean isPowerOfTwo(int x) { return (x ...

We can use the unit type as a function argument to define functions that we don't want executed until later. This is often useful in asynchronous background tasks, when the main thread may want trigger some predefined functionality of the background thread, like maybe moving it to a new file, or if...

You can use conditional operators in WordPress to enqueue scripts on specific pages of your Website. function load_script_for_single_post(){ if(is_single()){ wp_enqueue_script( 'some', get_template_directory_uri().'/js/some.js', array...

Since vim version 7.3 the feature 'persistent_undo' is supported, which makes it possible do undo/redo changes, even after closing vim or restarting your computer. It's possible to configure it by adding the following to your vimrc, but first create a directory, where your undofiles should be saved...

Here's an example on how to use ACF to output differently based on options (color selections in this case). While you can use <?php echo get_field('color_options'); ?> to output the value directly, you can also change the markup depending on the selection. <?php $option = get_field('color_...

Custom formats, also known as user defined formats, can be created and used like any other default formats. /*Create new character format for state variables*/ PROC FORMAT; VALUE $statef 'CA' = 'California' 'MA' = 'Massachusetts' 'NY' = 'New York'; ...

Default WooCommerce checkout form comes with several fields for customers to enter their billing details. But in some cases, you might want to hide some of these fields. For example, if you are selling only virtual products, you can get rid of fields like billing address. Use the following code sn...

Area Light Light is emitted across the surface of a rectangular area. They are baked only which means you won't be able to see the effect until you bake the scene. Area Lights have the following properties: Width - Width of light area. Height - Height of light area. Color - Assign the color...

These functions will hash either String or Data input with one of eight cryptographic hash algorithms. The name parameter specifies the hash function name as a String Supported functions are MD2, MD4, MD5, SHA1, SHA224, SHA256, SHA384 and SHA512 This example requires Common Crypto It is nece...

These functions will hash either String or Data input with one of eight cryptographic hash algorithms. The name parameter specifies the hash function name as a String Supported functions are MD5, SHA1, SHA224, SHA256, SHA384 and SHA512 This example requires Common Crypto It is necessary to h...

var express = require('express'); var path = require('path'); var favicon = require('serve-favicon'); var app = express(); app.use(favicon(__dirname + '/public/img/favicon.ico')); app.use(express.static(path.join(__dirname, 'public'))); app.listen(3000, function() { console.log("...

var express = require('express'); var app = express(); var router = express.Router(); app.route('/user') .get(function (req, res) { res.send('Get a random user') }) .post(function (req, res) { res.send('Add a user') }) .put(function (req, res) { res.send...

The recommended approach would be to avoid doing so and rather use IOptions<TOptions> and IServiceCollection.Configure<TOptions>. That said, this is still pretty straightforward to make IConfigurationRootavailable application wide. In the Startup.cs constructor you should have the foll...

public class TestngAnnotation { // test case 1 @Test public void testCase1() { System.out.println("in test case 1"); } // test case 2 @Test public void testCase2() { System.out.println("in test case 2"); } @BeforeMethod pu...

The simplest and cleanest way to add an external configuration is through a separate Gradle file build.gradle apply from: './keystore.gradle' android{ signingConfigs { release { storeFile file(keystore.storeFile) storePassword keystore.storePassword ...