I’d place the ability to omit parenthesises for single args in the same category as being able to omit `self` when accessing properties. They are small conveniences that make a large difference to an entire codebase.
> On 19 Apr 2016, at 15:49, Erica Sadun via swift-evolution > <swift-evolution@swift.org> wrote: > > Apart from intuition and confusion, parentheses are used at call sites > and declarations. It seems out of line that they can be removed in types > but only in one degenerate case. > > This goes against the Swift core design goal of consistency. > > -- E
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