Tutorial by Topics

XML Document Type Declaration commonly known as DTD is a way to describe precisely the XML language. DTDs check the validity of, structure and vocabulary of an XML document against the grammatical rules of the appropriate XML language. A DTD defines the structure and the legal elements and attribute...

Web Component Tester - the tool for unit testing apps built with Polymer. You get a browser-based testing environment, configured out of the box with mocha, chai, async, lodash, sinon & sinon-chai, test-fixture, accessibility-developer-tools. WCT will run your tests against whatever browsers y...

constexpr is a keyword that can be used to mark a variable's value as a constant expression, a function as potentially usable in constant expressions, or (since C++17) an if statement as having only one of its branches selected to be compiled. The constexpr keyword was added in C++11 but for a...

Ada is an internationally standardized, high-level, object-oriented computer programming language that supports strong typing and structured programming. More information may be found here. VersionRelease DateAda 2012(TC-1)2016-04-01Ada 20122012-12-10Ada 20052007-01-01Ada 951995-12-10Ada 83198...

Content of controls can be localized using Resource files, just as this is possible in classes. For XAML there is a specific syntax, that is different between a C# and a VB application. The steps are: For any WPF project: make the resource file public, the default is internal. For C# WPF proj...

The Flash concept is taken from Ruby on Rails and provides a way to pass temporary objects between the user views generated by the faces lifecycle. As in Rails, anything one places in the flash will be exposed to the next view encountered by the same user session and then cleared out. It is import...

There is no inherent answer in C# to this - so called - need. Nonetheless there are workarounds to satisfy this need. The reason I qualify the need as "so called" is that we only need methods with 2 or more than 2 values to return when we violate good programming principals. Especially ...

Magit is an interface to the version control system Git, implemented as an Emacs package. It allows you to interact with git in Emacs. Magit is an interface to the version control system Git, implemented as an Emacs package. Magit aspires to be a complete Git porcelain. While we cannot (y...

browser.pause() browser.debugger() This section explains how we can debug protractor tests.

The Elvis operator evaluates based on Groovy-Truth of the condition-part.

Possible Exceptions System.ArrayTypeMismatchException: Attempted to access an element as a type incompatible with the array. This exception can occur when attempting to bind a collection to a non-bindable property when XAML pre-compilation is enabled. A common example is attempting to bind ...

The Redis keyspace can be thought of as a hash table or dictionary mapping keys to data structures in the database. Redis provides a wide range of commands that work with keys to manage the keyspace, including the ability to remove keys, inspect key metadata, search for keys, and modify certain pro...

If you're going to run your project on another computer, you'll need to generate a new API key for it, because SHA-1 fingerprints will not match for different build machines. You can explore the project, described in example Adding a map in Xamarin.Forms here