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Re: What is "TypeA -> TypeB"?
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Re: What is "TypeA -> TypeB"?

  • Subject: Re: What is "TypeA -> TypeB"?
  • From: Quincey Morris <email@hidden>
  • Date: Thu, 02 Jul 2015 21:41:39 +0000
On Jul 2, 2015, at 13:54 , Rick Mann <email@hidden> wrote:
>
>> On Jul 2, 2015, at 13:51 , Jonathan Hull <email@hidden <mailto: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.



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 >What is "TypeA -> TypeB"? (From: Rick Mann <email@hidden>)
 >Re: What is "TypeA -> TypeB"? (From: Jonathan Hull <email@hidden>)
 >Re: What is "TypeA -> TypeB"? (From: Rick Mann <email@hidden>)

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