[swift-evolution] [pitch] Eliminate the "T1 -> T2" syntax, require "(T1) -> T2"

Dave Abrahams dabrahams at apple.com
Tue Apr 19 17:29:48 CDT 2016

on Tue Apr 19 2016, Alan Skipp <swift-evolution at swift.org> wrote:

> Iā€™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.

Care to back that up with some measurements?  Take one of your projects
and find the instances of ā€œ[^) ] *->ā€

How many places in the code are affected, and how much worse is the result?

>     On 19 Apr 2016, at 15:49, Erica Sadun via swift-evolution
>     <swift-evolution at 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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