«where» clauses on contextually generic declarations #1011
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segiddins
reviewed
Apr 8, 2019
| > protocol P { | ||
| > // error: Instance method requirement 'foo(arg:)' cannot add constraint 'Self: Equatable' on 'Self' | ||
| > func foo() where Self: Equatable | ||
| > } |
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@DougGregor Would you like to manage this? |
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@tkremenek Is there an opportunity to stage this for review in the near future? |
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This proposal is about getting rid of the restriction on attaching
whereclauses to declarations that inherit the surrounding generic environment, but themselves do not introduce generic parameters. Only declarations that can already be generic fall under this enhancement.Implementation: #23489