Tutorial by Examples: x

Critical Exceptions

Generally most of the exceptions are not that critical, but there are some really serious exceptions that you might not be capable to handle, such as the famous System.StackOverflowException. However, there are others that might get hidden by Catch ex As Exception, such as System.OutOfMemoryExceptio...

Visual Basic .NET Language • Error Handling

Live example

A live example for this can be found here.

Angular 2 • EventEmitter Service

SMTPClient - Mail with .txt file in body message

# Define the txt which will be in the email body $Txt_File = "c:\file.txt" function Send_mail { #Define Email settings $EmailFrom = "[email protected]" $EmailTo = "[email protected]" $Txt_Body = Get-Content $Txt_File -RAW $Body = $Body_...

PowerShell • Sending Email

Setting up CXF for JAX-RS

The jars for CXF JAX-RS are found in Maven:  <dependency> <groupId>org.apache.cxf</groupId> <artifactId>cxf-rt-rs-client</artifactId> <version>3.1.10</version> ...

cxf • Getting started with cxf

Example Programs

For Example: echo Hello! pause >nul :Name echo What Is Your Name set /p Input=Name: echo so %Input% Is Your Name, right? echo Rename? echo 1 For Yes echo 2 For No set /p Input=Rename: if %Input%=1 goto Name Another Example: @echo off echo 1 or 2? set /p input=Choice: if %input...

batch-file • Using Goto

A basic, complete Syslog example

Going to its roots, Logstash has the ability to parse and store syslog data. This example shows a basic configuration that gets you to that. input { file { path => [ "/var/log/syslog", "/var/log/auth.log" ] type => "syslog" } }...

logstash • Getting started with logstash

Customizing the appearance of the TextInputLayout

You can customize the appearance of the TextInputLayout and its embedded EditTextby defining custom styles in your styles.xml. The defined styles can either be added as styles or themes to your TextInputLayout. Example for customizing the hint appearance: styles.xml: <!--Floating label text st...

Android • TextInputLayout

Anonymize IP address in text file

# Read a text file and replace the IPv4 and IPv6 by fake IP Address # Describe all variables $SourceFile = "C:\sourcefile.txt" $IPv4File = "C:\IPV4.txt" $DestFile = "C:\ANONYM.txt" $Regex_v4 = "(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})" $Anonym_v4 = &quo...

PowerShell • Anonymize IP (v4 and v6) in text file with Powershell

Usage of functions to polyfill (ex: find)

<template> <div class="hello"> <p>{{ filtered() }}</p> </div> </template> <script> export default { name: 'hello', data () { return { list: ['toto', 'titi', 'tata', 'tete'] } }, methods: { filtered ...

Vue.js • Polyfill "webpack" template

Basic Example

To avoid unsightly #DIV/0 errors in a spreadsheet, a custom function can be used. /** * Divides n by d unless d is zero, in which case, it returns * the given symbol. * * @param {n} number The numerator * @param {d} number The divisor * @param {symbol} string The symbol to display...

google-apps-script • Create a custom function for Google Sheets

Inheriting Signals on Extended Models

Django's signals are restricted to precise class signatures upon registration, and thus subclassed models are not immediately registered onto the same signal. Take this model and signal for example class Event(models.Model): user = models.ForeignKey(User) class StatusChange(Event): ...

Django • Signals

Getting details of Linux kernel.

We can use command uname with various options to get complete details of running kernel. uname -a Linux df1-ws-5084 4.4.0-64-generic #85-Ubuntu SMP Mon Feb 20 11:50:30 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux As per man page here few more options Usage: uname [OPTION]... Print certain system inf...

GNU/Linux • Getting information on a running Linux kernel

Replacing fragments with ajax

If you want to replace parts of your website, ajax is an easy way to do it. The website.html where you want to replace the content based on the selected value: <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"> ...

thymeleaf • Getting started with thymeleaf

Basic jumbotron with two lines of text and a button

This is a jumbotron with a title, a content and a button. Code <div class="jumbotron"> <h1>Title text</h1> <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec tortor ipsum, convallis sit.</p> <p><a class="btn btn-default&...

twitter-bootstrap • Jumbotron

Example

First you have to create a file constants.php and it is a good practice to create this file inside app/config/ folder. You can also add constants.php file in compose.json file. Example File: app/config/constants.php Array based constants inside the file: return [ 'CONSTANT' => 'This...

Laravel • Constants

Handling non-existing options

Code <?php echo get_option( 'something_bla_bla_bla' ); ?> Output false Code <?php echo get_option( 'something_bla_bla_bla', 'Oh no!' ); ?> Output Oh no!

WordPress • get_option()

Making a button in your UI that pauses callback execution

Sometimes we'd like to pause code execution to inspect the state of the application (see Debugging). When running code through the MATLAB editor, this can be done using the "Pause" button in the UI or by pressing Ctrl+c (on Windows). However, when a computation was initiated from a GUI (vi...

MATLAB Language • MATLAB User Interfaces

Dynamic Method Dispatch - Example Code

Abstract Class : package base; /* Abstract classes cannot be instantiated, but they can be subclassed */ public abstract class ClsVirusScanner { //With One Abstract method public abstract void fnStartScan(); protected void fnCheckForUpdateVersion(){ System....

Java Language • Dynamic Method Dispatch

Splitting Delimited Strings using XMLTable

Sample Data: CREATE TABLE table_name ( id, list ) AS SELECT 1, 'a,b,c,d' FROM DUAL UNION ALL -- Multiple items in the list SELECT 2, 'e' FROM DUAL UNION ALL -- Single item in the list SELECT 3, NULL FROM DUAL UNION ALL -- NULL list SELECT 4, 'f,,g' FROM DUAL; -- NULL item...

Oracle Database • Splitting Delimited Strings

TTL and Key Expiration

The expiration values of a key can be managed by a user outside of the update commands. Redis allows a user to determine the current time to live (TTL) of a key using the TTL command: TTL key This command will return the TTL of a key in seconds or will return the special values -1 or -2. A -1 ...

redis • Redis Keys