Tutorial by Topics: h

PowerShell Workflow is a feature that was introduced starting with PowerShell version 3.0. Workflow definitions look very similar to PowerShell function definitions, however they execute within the Windows Workflow Foundation environment, instead of directly in the PowerShell engine. Several unique...

The NuGet package Newtonsoft.Json has become the defacto standard for using and manipulating JSON formatted text and objects in .NET. It is a robust tool that is fast, and easy to use.

Strict Mode is a special class introduced in Android 2.3 for debugging. This developer tools detect things done accidentally and bring them to our attention so that we can fix them. It is most commonly used to catch the accidental disk or network access on the applications’ main thread, where UI ope...

MySQL offers FULLTEXT searching. It searches tables with columns containing text for the best matches for words and phrases. FULLTEXT searching works strangely on tables containing small numbers of rows. So, when you're experimenting with it, you may find it helpful to obtain a medium-sized ta...

This section provides an overview of what apache-spark-sql is, and why a developer might want to use it. It should also mention any large subjects within apache-spark-sql, and link out to the related topics. Since the Documentation for apache-spark-sql is new, you may need to create initial ver...

The cut command is a fast way to extract parts of lines of text files. It belongs to the oldest Unix commands. Its most popular implementations are the GNU version found on Linux and the FreeBSD version found on MacOS, but each flavor of Unix has its own. See below for differences. The input lines a...

In order to use custom tags in JSP,we used to have TLD files,along with a Java class to define the custom tags but post JSP 2.0 specs,the same can be achieved,without the need for any Source code files,making it easy to maintain and it can also be created by someone with basic knowledge of JSP tags ...

This topic explains how the WinForms engine works to display forms and how you control their lifetimes.

Currently, reading all elements in JSON array is not possible in Redshift. For e.g. if you want to read Manufacturer and model as columns from following JSON dim_idnumberinfomanufacturermodel 2001Nissan~Sentra^Nissan~Maxima^Ford~Taurus^Ford~Escort^NissanSentra 2002Nissan~Sentra^Nissan~Ma...

You can use hierarchical queries to retrieve data based on a natural hierarchical relationship between rows in a table

Example of how to copy existing table structure with/without data CREATE TABLE schemaName.table AS (SELECT columns FROM schemaName.table) WITH DATA

This section provides an overview of what android-asynctask is, and why a developer might want to use it. It should also mention any large subjects within android-asynctask, and link out to the related topics. Since the Documentation for android-asynctask is new, you may need to create initial ...

This section provides an overview of what quartz.net is, and why a developer might want to use it. It should also mention any large subjects within quartz.net, and link out to the related topics. Since the Documentation for quartz.net is new, you may need to create initial versions of those rel...

There is a built in easy way to read files in binary within VBA, however it has a restriction of 2GB (2,147,483,647 bytes - max of Long data type). As technology evolves, this 2GB limit is easily breached. e.g. an ISO image of Operating System install DVD disc. Microsoft does provide a way to overco...

This topic is going to focus on the A* Pathfinding algorithm, how it's used, and why it works. Note to future contributors: I have added an example for A* Pathfinding without any obstacles, on a 4x4 grid. An example with obstacles is still needed.

RequireJS is an implementation of the Asynchronous Module (AMD) API used to load javascript files asynchronously (i.e. without blocking) and manage dependencies between multiple javascript files. It also includes an optimization tool for combining and minimizing script files for deployment while...

This section provides an overview of what corona is, and why a developer might want to use it. It should also mention any large subjects within corona, and link out to the related topics. Since the Documentation for corona is new, you may need to create initial versions of those related topics....

Sometimes your SSH session stops responding. You can easily get out of that session using the following trick.

Recording test scenarios is one of the most convenient ways to create test scripts. This is because test recordings let you mimic realistic user workflows, instead of having to manually create a test script. The recordings capture all browser requests to the web application, and then automatically c...

Pharo provides an excellent way to combat complexity in software development. With its fast feedback with instantaneous compilation of the currently edited method, its objects all the way from compiler to the run-time stack, and tools designed to be customizable by the individual developer, it s...