[swift-evolution] Change subscripts to use colons

[Brent Royal-Gordon]

> On Jul 9, 2016, at 11:48 AM, James Froggatt via swift-evolution <swift-evolution at swift.org> wrote:
> 
> Subscripts are a hybrid of properties and functions, since they have a parameter list, as well as getters and setters, so use of either symbol will be unusual in this case.
> 
> However, I think a colon is more suitable, since it implies the possibility to set the value.

Can you show us an example of the current syntax and your proposed replacement? I'm not sure what you actually mean by "use colons".

-- 
Brent Royal-Gordon
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