Rust TutorialLesson 13Free preview

Rust Match

This lesson is part of Rust · All levels

Summary

This lesson peels out the matching construction in Rust which is a very powerful pattern matching mechanism. Compared to 'switch' in other languages, 'match' in Rust checks for the fulfilment of all possible conditions (exhaustive checking). This pattern is often used in conjunction with enum and structured value testing.

Key points

Match compares a value to a set of patterns (arms)
Patterns and expressions are connected using the thick arrow symbol '=>'
Rust compiler requires a match pattern to be exhaustive (including all possibilities)
The lower-line placeholder character '_' serves as the default (catch-all) pattern

Full lesson

Code examples and quizzes

Full lessons, code examples, and quizzes are available to subscribers. 5 questions.