Tutorial by Examples: a

What is the difference between customErrors and httpErrors?

Both are used to define error handling for a website, but different software refers to different config elements. customErrors are a legacy (backwards compatable) element, used by Visual Studio Development Server (aka. VSDS or Cassini). httpErrors are the new element which is only used by IIS7. T...

ASP.NET • web.config > system.webServer/httpErrors & system.web/customErrors sections

Testing Xpaths in browser console

A quick way to test your xpath is in your browser developer tool console. Format is $x('//insert xpath here') $ - specifies it is a selector. x - specifies it is using xpaths Example: $x("//button[text() ='Submit']") When this command is entered it will return all occurrences...

xpath • Getting started with xpath

Select keyword can be used for getting input argument in a menu format

Suppose you want the user to select keywords from a menu, we can create a script similar to #!/usr/bin/env bash select os in "linux" "windows" "mac" do echo "${os}" break done Explanation: Here select keyword is used to loop through a list ...

Bash • Select keyword

How to get selected records from another table (using TCA group field)

Example of a TCA field configuration where you can select records from a table 'my_topfeatures' => array( 'label' => 'Select Topfeatures', 'config' => array( 'type' => 'group', 'internal_type' => 'db', 'size' => '4', ...

typo3 • Database Query DataProcessor - Examples

IF, TRY and others are expressions, not statements

In Kotlin, if, try and others are expressions (so they do return a value) rather than (void) statements. So, for example, Kotlin does not have Java's ternary Elvis Operator, but you can write something like this: val i = if (someBoolean) 33 else 42 Even more unfamiliar, but equally expressive, ...

Kotlin • Kotlin for Java Developers

Generate a Scheduled Newsletter

Create the Newsletter model: rails g model Newsletter name:string email:string subl app/models/newsletter.rb validates :name, presence: true validates :email, presence: true Create the Newsletter controller: rails g controller Newsletters create class NewslettersCont...

Ruby on Rails • ActionMailer

Example Fluid Template File

Templates/Text.html <html xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers" data-namespace-typo3-fluid="true"> <f:layout name="Default" /> <f:section name="Main"> <f:format.html>{data.bodytext}</f:format.html&gt...

typo3 • Fluid templating in TYPO3

Assume unchanged

If a file is changed, but you don't like to commit it, set the file as "Assume unchanged" Revert "Assume unchanged" Need some steps:

Git • TortoiseGit

Multiple usernames and email address

Since Git 2.13, multiple usernames and email addresses could be configured by using a folder filter. Example for Windows: .gitconfig Edit: git config --global -e Add: [includeIf "gitdir:D:/work"] path = .gitconfig-work.config [includeIf "gitdir:D:/opensource/"] ...

Git • Configuration

Akka-Streams: subflows

You can dynamically fork a flow in multiple subflows using groupBy. The continuing stages are applied to each subflow until you merge them back using mergeSubstreams. val sumByKey: Flow[(String, Int), Int, NotUsed] = Flow[(String, Int)]. groupBy(Int.maxValue, _._1). //forks the flow ...

akka • Akka Streams

Akka HTTP server: Hello World (Scala DSL)

The following app will start an HTTP server listening on port 8080 that returns Hello world on GET /hello/world import akka.actor.ActorSystem import akka.http.scaladsl.Http import akka.http.scaladsl.server.Directives._ import akka.http.scaladsl.server._ import akka.stream.ActorMaterializer i...

akka • Akka HTTP

Remove Database connection correctly

If we want to remove some database connection from the list of database connections. we need to use QSqlDatabase::removeDatabase(),however it's a static function and the way it work is a little wired. // WRONG WAY QSqlDatabase db = QSqlDatabase::database("sales"); QSqlQuery query(&...

Qt • Qt - Dealing with Databases

Embed vbscript code into batch file without using temporary files

Here's an example with the technique(hack) invented by the dostips forums' user Liviu: @echo off echo Printed by CMD.EXE cscript //nologo "%~f0?.wsf" //job:JS //job:VBS exit /b %errorlevel% ----END OF BATCH CODE--- <package> <job id="JS"> <script...

batch-file • Batch and VBS hybrids

Basic concepts

Explains how the Windows installer works, what MSI packages are, what merge modules are, how and why transforms can be used and finally commandline options for MSIEXEC. Describes the tools being provided by Microsoft (and 3rd party authoring tools such as InstallShield, Advanced Installer, Wise Pac...

windows-installer • Getting started with windows-installer

pom.xml to generate a FIXME report

<build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>project-info-reports</artifactId> <version>2.9</version> <executions> ...

Apache Maven • Generate FIXME/TODO reports using the taglist-maven-plugin

APPEND

APPEND was command in msdos that allowed to use resource/media files like they are in the same directory.The command is still available in 32bit versions of windows but seems is not working. In some sources (including microsofts') it is pointed that the command is replaced by DPATH ,but it is not en...

batch-file • Deprecated batch commands and their replacements

BITSADMIN

BITSADMIN was used to transfer documents, download website, download files from websites, etc... This command is a deprecated command, and may be removed on next Windows updates. To prevent this issue, use the new Powershell BIT cmdlet. Here is a sample code utilizing BITSADMIN. @echo off Bitsa...

batch-file • Deprecated batch commands and their replacements

A basic EAR configuration

<dependencies> <dependency> <groupId>{ejbModuleGroupId}</groupId> <artifactId>{ejbModuleArtifactId}</artifactId> <version>{ejbModuleVersion}</version> <type>ejb</type> </dependency> &...

Apache Maven • Maven EAR plugin

Wasd controls

The wasd-controls component controls an entity with the W, A, S and D or arrow keyboard keys. The wasd-controls component is commonly attached to an entity with the camera component. <a-entity camera look-controls wasd-controls></a-entity> For azerty keyboards, you could use Z, Q, S...

aframe • Controls (component)

Hand controls

A-Frame 0.x0.3 A-Frame provides an implementation for supporting multiple types of 6DoF controllers (Vive, Oculus Touch) via the hand-controls component. The hand-controls component is primarily for 6DoF controllers since it’s geared towards room scale interactions such as grabbing objects. The han...

aframe • Controls (component)