Tutorial by Topics: k

Keywords are predefined, reserved identifiers with special meaning to the compiler. They cannot be used as identifiers in your program without the @ prefix. For example @if is a legal identifier but not the keyword if.

When you use the yield keyword in a statement, you indicate that the method, operator, or get accessor in which it appears is an iterator. Using yield to define an iterator removes the need for an explicit extra class (the class that holds the state for an enumeration) when you implement the IEnumerable and IEnumerator pattern for a custom collection type.

An Android application needs to run on all kinds of devices. Each device may have a different version on Android running on it.

Now, each Android version might not support all the features that your app requires, and so while building an app, you need to keep the minimum and maximum Android version in mind.

Anchor tags are commonly used to link separate webpages, but they can also be used to link between different places in a single document, often within table of contents or even launch external applications. This topic explains the implementation and application of HTML anchor tags in various roles.

With CSS you can set colors, gradients, and images as the background of an element.

It is possible to specify various combinations of images, colors, and gradients, and adjust the size, positioning, and repetition (among others) of these.

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