January 2017
Intermediate to advanced
420 pages
9h 25m
English
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Chapter 8. Generics
Generics, or generic programming, is a technique whereby functions can be written in terms of types that are not specified when the function is written, and then later used for many different types. Generics is the term used in Java and Kotlin, but other names, such as parametric polymorphism and templates, are used in other languages for similar features.
In this chapter we will cover:
- Type parameterization
- Type bounds and recursive type bounds
- Invariance, covariance and contravariance
- Algebraic data types
Parameterised functions
Consider a function called random() that, when given some elements, returns one element randomly. We don't need to know what the types of the elements are when we write this function, as we will not be ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.