Swift BasicsLesson 16Free preview

Swift Switch

This lesson is part of Swift · All levels

Summary

This lesson reviews the 'switch' statement in Swift which is much more sophisticated and secure than the switch in C. Switches in Swift require full coverage of possible values (exhaustive), have no implicit fall-through behavior, and support advanced pattern matching such as range intervals and tuple.

Key points

The 'switch' statement matches the values to some of the 'case' branches
The switch on Swift is exhaustive: all possible values must be accommodated
The default clause is mandatory if all possible values are not covered
There is no fall-through automatically, so the keyword 'break' is not mandatory at the end of each case

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