[swift-evolution] [Proposal draft #2] Naming Functions with Argument Labels

Douglas Gregor dgregor at apple.com
Tue Jan 12 01:43:49 CST 2016

Sent from my iPhone

On Jan 11, 2016, at 11:22 PM, Brent Royal-Gordon <brent at architechies.com> wrote:

>>> foo(bar:(Int))
>>> (that's why I wanted to avoid the parenthesis in the first place…)
>> It’s grammatically ambiguous if you don’t have the “:)” at the end
> Is it? It's not legal to pass a type name—`foo(bar: Int)` is not legal code; you have to say `foo(bar: Int.self)`.

"Grammatically" is key here: the parser doesn't know a type name from a variable name. 

> -- 
> Brent Royal-Gordon
> Architechies

More information about the swift-evolution mailing list