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match

Choosing what to do by comparing a value against patterns.

A match expression compares a value against arms' patterns in order and evaluates the first arm that matches.

Examples

  • let part = match hour { 0..=5 => "night", 12 | 13 => "lunchtime", _ => "other" }; picks a word for the hour, lunchtime for 12.

See also

pattern exhaustive wildcard match guard
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