> On Jul 6, 2016, at 8:25 PM, Cao, Jiannan via swift-evolution
> <[email protected]> wrote:
>
> Don't agree with this one.
>
> func foo(a: Int = 0, b: Int = 1, c: Int = 2) {
> print(a, b, c)
> }
>
> foo(a: 1, c: 3)
>
> let bar = foo
>
> bar(1, 3) will different than foo(a: 1, c: 3)
bar(1, 3) will result in an error, because “bar” is of type
(Int, Int, Int) -> Void
Default arguments are associated with function declarations, not function types.
- Doug
>
>> 在 2016年7月7日，11:06，Chris Lattner <[email protected]> 写道：
>>
>> Proposal Link:
>> https://github.com/apple/swift-evolution/blob/master/proposals/0111-remove-arg-label-type-significance.md
>>
>> The review of "SE-0111: Remove type system significance of function argument
>> labels " ran from June 30 ... July 4, 2016. The proposal has been *accepted*:
>>
>> The community and core team agree that this proposal will lead to a
>> simplification and clarification of the type system, as well as a more clear
>> user model for parameter labels. In response to community feedback, the
>> core team is accepting the proposal with a revision to allow “purely
>> cosmetic” parameter labels in closure types for documentation (as outlined
>> in the alternatives section). The core team also wants to clarify that a
>> call to a value of closure type would not allow use of any parameter labels,
>> some interpretations thought that “arbitrary” parameter labels could be used.
>>
>> Thank you to Austin Zheng for driving this discussion forward! I filed
>> SR-2009 to track implementation work on this.
>>
>> -Chris Lattner
>> Review Manager
>>
>> _______________________________________________
>> swift-evolution-announce mailing list
>> [email protected]
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>
>
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