Tutorial by Topics: t

PowerShell offers a variety of useful "automatic" (built-in) variables. Certain automatic variables are only populated in special circumstances, while others are available globally.

Starting with PowerShell version 5.0, you can use PowerShell class definitions to create Desired State Configuration (DSC) Resources. To aid in building DSC Resource, there's a [DscResource()] attribute that's applied to the class definition, and a [DscProperty()] resource to designate properties a...

We may use QML to build hybrid applications, since it's much more easier than C++. So we should know how they communicate with each other.

How to validade user inputs. Validation constrains the values a user can input into a cell, and/or set a combobox for the user select the value for the cell. Optionally, a message can be displayed when the user clicks in a cell and a message error, when the validation fails.

AppDelegate is a protocol which defines methods that are called by the singleton UIApplication object in response to important events in the lifetime of an app. Normally used to perform tasks on application startup (setup app environment, analitycs (ex.: Mixpanel/GoogleAnalytics/Crashlitics), DB st...

Unit testing is taking a piece of code and testing it independently without any other dependencies or parts of the system running (for example the database). Robolectric is a unit test framework that de-fangs the Android SDK jar so you can test-drive the development of your Android app. Tests run i...

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.

It refers to the splitting of sentences and words from the body of text into sentence tokens or word tokens respectively. It is an essential part of NLP, as many modules work better (or only) with tags. For example, pos_tag needs tags as input and not the words, to tag them by parts of speech. ...

Stop words are the words which are mostly used as fillers and hardly have any useful meaning. We should avoid these words from taking up space in database or taking up valuable processing time. We can easily make a list of words to be used as stop words and then filter these words from the data we w...

What is introspection? Introspection is looking inward to know about the inside. That is a simple definition of introspection. In programming and Ruby in general…introspection is the ability to look at object, class… at run time to know about that one.

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...

This topic illustrates how to exploit Functional Programming in a WPF application. The first example comes from a post by Māris Krivtežs (ref Remarks section at the bottom). The reason for revisiting this project is twofold: 1\ The design supports separation of concerns, while the model is kept pur...

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 ...

Pivot table is one kind of interactive table, which can be used to calculate data, such as get sum or count data. Also, users can change pivot table layout for analyzing data with different ways or reassign row/column label. Every time users change layout, data will be recalculated in pivot table. ...

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...