Tutorial by Examples: pt

Options have a flatMap method. This means they can be used in a for comprehension. In this way we can lift regular functions to work on Options without having to redefine them. val firstOption: Option[Int] = Option(1) val secondOption: Option[Int] = Option(2) val myResult = for { firstValue ...

Dim classFile : classFile = "carClass.vbs" Dim fsObj : Set fsObj = CreateObject("Scripting.FileSystemObject") Dim vbsFile : Set vbsFile = fsObj.OpenTextFile(classFile, 1, False) Dim myFunctionsStr : myFunctionsStr = vbsFile.ReadAll vbsFile.Close Set vbsFile = Nothing Set fs...

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

To compute the hashes of relatively small blocks of data using different algorithms: final MessageDigest md5 = MessageDigest.getInstance("MD5"); final MessageDigest sha1 = MessageDigest.getInstance("SHA-1"); final MessageDigest sha256 = MessageDigest.getInstance("SHA-256&...

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.

if( function_exists('acf_add_options_page') ) { acf_add_options_page(array( 'page_title' => 'Theme General Settings', 'menu_title' => 'Theme Settings', 'menu_slug' => 'theme-general-settings', 'capability' => 'edit_posts', ...

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...

When the last command in an interactive bash instance is done, the evaluated PS1 variable is displayes. Before actually displaying PS1 bash looks whether the PROMPT_COMMAND is set. This value of this var must be a callable program or script. If this var is set this program/script is called BEFORE th...

This example covers some advanced features and use-cases for Exceptions. Examining the callstack programmatically Java SE 1.4 The primary use of exception stacktraces is to provide information about an application error and its context so that the programmer can diagnose and fix the problem. Som...

typealias Handler = () -> Void typealias Handler = () -> () This block creates a type alias that works as a Void to Void function (takes in no parameters and returns nothing). Here is a usage example: var func: Handler? func = {}

To setup JVM options inside elastic beanstalk, your bundle file must be like this: -bundle.zip |--.ebextensions //do not forget the dot at the beginning of the name |--jvm.config |--java_app.jar And, the jvm.config file must be set like this: option_settings: ...

To get a shorter version of the Null or Empty check, use an "= Nothing" comparison. Iif(Fields!UserEmail.Value = Nothing, "Null or Empty", "Not Null or Empty") The "= Nothing" will check simultaneously against Null or Empty, giving a more compact expressio...

$user = wp_get_current_user(); foreach($user->data as $key=>$user_data){ if($key == 'user_pass' || $key == 'user_activation_key' || $key=='user_status'){} else{ $nice_key = ucfirst(str_replace('_', ' ', $key)); if($key == 'user_registered'){ $u...

using System; using System.IO; using System.Security.Cryptography; namespace Aes_Example { class AesExample { public static void Main() { try { string original = "Here is some data to encrypt!"; ...

A C program that wishes to accept network connections (act as a "server") should first create a socket bound to the address "INADDR_ANY" and call listen on it. Then, it can call accept on the server socket to block until a client connects. //Create the server socket int servsoc...

To encrypt data with a public key: final Cipher rsa = Cipher.getInstance("RSA"); rsa.init(Cipher.ENCRYPT_MODE, keyPair.getPublic()); rsa.update(message.getBytes()); final byte[] result = rsa.doFinal(); System.out.println("Message: " + message); System.out.println("...

@Component public class RestExceptionResolver extends ExceptionHandlerExceptionResolver { @Autowired //If you have multiple handlers make this a list of handlers private RestExceptionHandler restExceptionHandler; /** * This resolver needs to be injected because it is the...

To create a new model in your module Add a folder Model in your module root folder and create a file Modelname.php in this folder. for example Rick/Demo/Model/Modelname.php The class name of your model does matter call it like this: <?php class Rick_Demo_Model_Modelname { } make sure y...

First we must edit the SSH daemon config file. Though under different Linux distributions this may be located in different directories, usually it is stored under /etc/ssh/sshd_config Use your text editor to change the values set in this file, all lines starting with # are commented out and must ha...

What is Dagger 2 ? The website describes itself as: Dagger is a fully static, compile-time dependency injection framework The library makes it easy to model dependency graphs as well as to reuse objects. Since reflection is only used at compile time as part of the annotation processing Dagger...