[swift-evolution] Make non-void functions @warn_unused_result by default

Erica Sadun erica at ericasadun.com
Wed Feb 24 21:12:01 CST 2016

I'd rather have something clear than short.

Some short ones that haven't been mentioned:
@Statement has a problem because the result can be used, it's just not mandated. 
@Statementable just makes no English sense at all (similarly @Procedurable) but kind of communicates the idea
@ResultDiscardable: not a fan
@StatementAllowed or @AllowStatement really doesn't make a ton of sense, but it's short and kind of gets the point across.
@SideEffects also short, also kind hints at stuff, also could be misleading, and the same for @HasSideEffects.
My favorite remains @SuppressUnusedResultWarning, which isn't short but pretty damn clear.

> On Feb 24, 2016, at 7:32 PM, Brent Royal-Gordon via swift-evolution <swift-evolution at swift.org> wrote:
>> @optional_result (or ideally @optionalResult if camel-case for attributes is accepted) is clearer I think if we want a shortened two-word form.

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