Tutorial by Topics: d

In order to utilize a JDBC datasource, we must first set up a JNDI reference in Tomcat. After the JNDI reference is made, JDBC datasources can be used within our Tomcat server and applications using shared or independent references (Great for dev/staging/prod setup, or removing connection strings/cr...

Firebase database is a NoSQL database that stores its data in the form of hierarchal JSON objects. There are no tables or records of any form as an SQL database would normally have, just nodes that make up a key-value structure. Data Normalization In order to have a properly designed database stru...

Calculated Properties in Powershell are custom derived(Calculated) properties. It lets the user to format a certain property in a way he want it to be. The calculation(expression) can be a quite possibly anything.

There are two types of procedures in Progress ABL: internal procedures and procedure prototypes that are facades to Windows dlls or Unix/Linux shared library procedures. Just like with functions, procedures cannot be nested. You cannot nest functions in procedures and vice versa. A procedure is ca...

AWS Lambda is a service that lets you run back-end code without the need to provision or manage servers. AWS Lambda takes care of scaling and high availability. The cost directly depends on how often and how long your code executes. You will find examples of how to create and deploy AWS Lambda func...

The Rules module is an engine which allows site administrators to automate actions to be conditionally executed, either programmatically or in response to predetermined events. Rules can react to Rules Events occurring on a Drupal site, such as a user logging in. And it can perform customized follo...

A stack trace is a great aid when debugging a program. You will get a stack trace when your program throws an Exception, and sometimes when the program terminates abnormally.

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

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

Django ModelForm enables the creation of a Form class from a Django model.

Django is shipped with several views that require forms. These forms are, naturally, built-in. A good example are Authentication Built-in forms. This topic intends to bring documentation on how to work with these forms.

This is a simple example demonstrating how to create a drop down menu in the Active Sheet of your workbook by inserting a Combo Box Activex object in the sheet. You'll be able to insert one of five Jimi Hendrix songs in any activated cell of the sheet and be able to clear it, accordingly.

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

Scrollbars can be added to Listbox, Canvas, and Text widgets. In addition, Entry widgets can be scrolled horizontally. To be able to scroll other type of widgets, you need to put them inside a Canvas or a Text widget. scrollbar = tk.Scrollbar(parent, **kwargs) ParameterDescriptionparentt...

Here you find examples for transition between Activities or Fragments using a shared element. An example for this behaviour is the Google Play Store App which translates an App's icon from the list to the App's details view. transaction.addSharedElement(sharedElementView, "targetTransitio...

grep, egrep, fgrep, rgrep, pgrep - are commands in Unix-like operating systems that print lines matching a pattern. The grep searches the named input FILEs for lines containing a match to the given PATTERN. By default, it prints the matching lines. In addition, the variant programs egrep, fgr...

As part of the Serverless movement, AWS recently announced C# support for AWS Lambda functions. In this article, I will show you how to develop, install and call a simple C# AWS Lambda Function using Visual Studio 2015. Before you start this example, first go to the Remarks section of this documen...

Reagent is a library that implements elements of React.js into ClojureScript, like the creations of custom "tags", which is implemented in Reagent through functions.

The FIND statement is used to retrieve a single record from a single table. It has some limitations compared to FOR or QUERY, but it's a simple and handy statement for fast access to records.