Tutorial by Topics: o

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.

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...

Moshi is a modern JSON library for Android and Java. It makes it easy to parse JSON into Java objects and Java back into JSON. Don't forget, always read the README!

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.

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.

The TypeFamilies language extension allows the programmer to define type-level functions. What distinguishes type functions from non-GADT type constructors is that parameters of type functions can be non-parametric whereas parameters of type constructors are always parametric. This distinction is im...

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...

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 tutorial covers all the necessary steps required to upload an iOS app to the App Store.

This topic contains information about working with columns and rows, like resizing, hiding, autofit

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. ...

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