Rust Programming Cookbook

How it works...

Ever since we came across pattern matching in the Scala programming language, we fell in love with its simplicity. As a major pillar of functional programming, the technique provides a quick way to transform values in various ways without sacrificing Rust's type safety.

The literal matches in Steps 2 and 7 are a great way to save on if-else chains. However, the most common matching is probably done to unpack Result or Option types for extracting the encapsulated values. While multiple matches are only possible using the | symbol , there are special operators to match to particular variations: ... denotes a range, while .. means to skip the remaining members of a struct. _ is almost always a wildcard for ignoring a particular ...