February 2018
Intermediate to advanced
350 pages
7h 35m
English
Content preview from Functional Kotlin
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Understanding delegation
Over time, the delegation pattern has proven to be a better alternative of inheritance. Inheritance is a powerful tool for code reuse, especially in the context of the Liskov Substitution model. Moreover, the direct support of OOP languages makes it even stronger.
However, inheritance still has some limitations, such as a class can't change its superclass dynamically during program execution; also, if you perform a small modification to the super class, it'll be directly propagated to the child class, and that is not what we want every time.
Delegation, on the other hand, is flexible. You can think of delegation as a composition of multiple objects, where one object passes its method calls to another one and calls ...
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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.