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The Rust Programming Language
book

The Rust Programming Language

by Steve Klabnik, Carol Nichols
July 2018
Intermediate to advanced content levelIntermediate to advanced
552 pages
13h 50m
English
No Starch Press
Content preview from The Rust Programming Language

18PATTERNS AND MATCHING

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Patterns are a special syntax in Rust for matching against the structure of types, both complex and simple. Using patterns in conjunction with match expressions and other constructs gives you more control over a program’s control flow. A pattern consists of some combination of the following:

  • Literals
  • Destructured arrays, enums, structs, or tuples
  • Variables
  • Wildcards
  • Placeholders

These components describe the shape of the data we’re working with, which we then match against values to determine whether our program has the correct data to continue running a particular piece of code.

To use a pattern, we compare it to some ...

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Publisher Resources

ISBN: 9781492067665Errata Page