Re: What is "TypeA -> TypeB"?
Re: What is "TypeA -> TypeB"?
- Subject: Re: What is "TypeA -> TypeB"?
- From: Rick Mann <email@hidden>
- Date: Thu, 02 Jul 2015 14:50:44 -0700
> On Jul 2, 2015, at 14:41 , Quincey Morris <email@hidden> wrote:
>
> On Jul 2, 2015, at 13:54 , Rick Mann <email@hidden> wrote:
>>
>>> On Jul 2, 2015, at 13:51 , Jonathan Hull <email@hidden> wrote:
>>>
>>> It is a closure which takes TypeA and returns TypeB.
>>
>> I thought those were written as this:
>>
>> (TypeA) -> TypeB
>>
>> With parentheses around the parameter list.
>
> A 1-tuple is the same thing as the value it encloses, and parameter lists have the syntax of a tuple. However, if you also specify a parameter name:
>
> (type: TypeA) -> TypeB
>
> presumably because the operators wouldn’t associate in the correct order otherwise.
Awesome, thanks for the clarification. I've written feedback on the Swift Closure docs to mention that.
--
Rick Mann
email@hidden
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