April 2018
Beginner
536 pages
13h 21m
English
Content preview from Learning TypeScript 2.x - Second Edition
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Interfaces
Interfaces are probably the feature that you will miss the most while developing large-scale web applications with JavaScript if you have a background in object-oriented statically-typed programming languages such as Java or C#.
Traditionally, in OOP, we say that a class can extend only one class and implement one or more interfaces. An interface can implement one or more interfaces and cannot extend another class or interface. Wikipedia's definition of interfaces in OOP is as follows:
"In object-oriented languages, the term interface is often used to define an abstract type that contains no data or code, but defines behaviors as method signatures."
In TypeScript, interfaces don't strictly follow this definition. The two main differences ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.