David Farler 8f2fbdc93a Make function parameters and refutable patterns always immutable ...

All refutable patterns and function parameters marked with 'var'
is now an error.

- Using explicit 'let' keyword on function parameters causes a warning.
- Don't suggest making function parameters mutable
- Remove uses in the standard library
- Update tests

rdar://problem/23378003

2015-11-09 16:56:13 -08:00

995 B

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