May 2012
Intermediate to advanced
304 pages
10h 21m
English
Content preview from Scala in Depth
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Chapter 5. Using implicits to write expressive code
In this chapter
- Introduction to implicits
- Mechanics of the implicit resolution system
- Using implicits to enhance classes
- Using implicits to enforce scope rules
The implicit system in Scala allows the compiler to adjust code using a well-defined lookup mechanism. A programmer in Scala can leave out information that the compiler will attempt to infer at compile time. The Scala compiler can infer one of two situations:
- A method call or constructor with a missing parameter.
- Missing conversion from one type to another type. This also applies to method calls on an object that would require a conversion.
In both of these situations, the compiler follows a set of rules to resolve missing data ...
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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.