Tutorial by Examples: r

<?php echo get_field('my_field_name', 'option'); ?> This will echo the value of "my_field_name" from the options page created via ACF.

A typical payment flow with Stripe can be divided in two steps: Client-side, in your frontend (HTML + Javascript) code, you collect the customer's payment information using Stripe's prebuilt Checkout form or Elements form field(s). This will return a token that you then send to your server. ...

Fabric.js is just like any other JS library just specific to canvas. Easy to setup and get started. All you need to do is download the fabric.js from HERE and include it in your project just like any other JS library for example the way you do it for jQuery. Then create the html file suppose index.h...

First of all we need to add MEDIA_ROOT and MEDIA_URL to our settings.py file MEDIA_ROOT = os.path.join(BASE_DIR, 'media') MEDIA_URL = '/media/' Also here you will work with ImageField, so remember in such cases install Pillow library (pip install pillow). Otherwise, you will have such error: I...

The setCustomTitle() method of AlertDialog.Builder lets you specify an arbitrary view to be used for the dialog title. One common use for this method is to build an alert dialog that has a long title. AlertDialog.Builder builder = new AlertDialog.Builder(context, Theme_Material_Light_Dialog); buil...

To read an atom's value, simply put the name of the atom, with a @ before it: @counter ; => 0 A bigger example: (def number (atom 3)) (println (inc @number)) ;; This should output 4

import javax.swing.JFrame; import javax.swing.SwingUtilities; import javax.swing.WindowConstants; public class Main { public static void main(String[] args) { SwingUtilities.invokeLater(() -> { JFrame frame = new JFrame("Hello World!"); frame...

Using java.lang.Runnable we make our "Hello World!" example available to Java users with versions dating all the way back to the 1.2 release: import javax.swing.JFrame; import javax.swing.SwingUtilities; import javax.swing.WindowConstants; public class Main { public static void ...

There are two kinds of programs the kernel knows of. A binary program is identified by it's ELF (ExtenableLoadableFormat) header, which is usually produced by a compiler. The second one are scripts of any kind. If a file starts in the very first line with the sequence #! then the next string has to...

Dim cars(2) cars(0) = "Ford" cars(1) = "Audi" cars(2) = "Prius"

Dim cars() Redim cars(0) 'Give it 1 entry Dim tmp tmp = "Ford" 'ubound(arrayvariable) is the count of array size. 'in this case, it would be 1, since there is 1 entry. cars(ubound(cars)) = tmp 'cars(0) Redim preserve cars(ubound(cars)+1)

Dim cars Dim filefullname : filefullname = "C:\testenv\test.txt" 'If you can, create an instaneous read for text file data for better memory handling. 'Unless it's a large file and that's impossible. cars = Split(CreateObject("Scripting.FileSystemObject").OpenTextFile(filefu...

You cannot alter the array's contents through the loop variable because it's a temporary each element is being assigned to. Dim cars(2) 'collection of different cars Dim trace 'track iteration details cars(0) = "Ford" cars(1) = "Audi" cars(2) = "Prius" For Each ca...

Dim i, cars(2) cars(0) = "Ford" cars(1) = "Audi" cars(2) = "Prius" For i=0 to ubound(cars) If cars(i) = "Audi" Then Exit For Next

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...

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); class Cron extends CI_Controller { /** * This is default constructor of the class */ public function __construct() { parent::__construct(); $this->load->library('input'...

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 ...