[swift-evolution] [Review] SE-0115: Rename Literal Syntax Protocols

Dave Abrahams dabrahams at apple.com
Tue Jul 5 17:12:39 CDT 2016

on Tue Jul 05 2016, Matthew Johnson <matthew-AT-anandabits.com> wrote:

>> On Jul 5, 2016, at 4:17 PM, Dave Abrahams via swift-evolution <swift-evolution at swift.org> wrote:
>> on Tue Jul 05 2016, Jordan Rose <jordan_rose-AT-apple.com <http://at-apple.com/>> wrote:
>>> [Proposal:
>>> https://github.com/apple/swift-evolution/blob/master/proposals/0115-literal-syntax-protocols.md
>>> <https://github.com/apple/swift-evolution/blob/master/proposals/0115-literal-syntax-protocols.md>
>>> <https://github.com/apple/swift-evolution/blob/master/proposals/0115-literal-syntax-protocols.md
>>> <https://github.com/apple/swift-evolution/blob/master/proposals/0115-literal-syntax-protocols.md>>
>>> ]
>>>> On Jul 3, 2016, at 9:52, David Sweeris via swift-evolution <swift-evolution at swift.org> wrote:
>>>>> On Jul 2, 2016, at 23:16, Erica Sadun via swift-evolution <swift-evolution at swift.org> wrote:
>>>>> Change it to "Syntax.ExpressibleByIntegerLiteral" and I'd be onboard but
>>>>> I don't think it would pass the DaveTest despite it being only 2 characters longer.[1]
>>>> Yeah, I agree with "By" instead of "As". It makes it a bit clearer
>>>> that these protocols kinda work backwards, so to speak. That is, if
>>>> I understand things correctly, rather than adding
>>>> functionality/semantics to the conforming type, conforming to a
>>>> literal protocol adds functionality/semantics to the corresponding
>>>> literal "type" (which we can't directly interact with because they
>>>> don't actually exist within Swift's type system).
>>> I like "By" much better than "As". For me, "expressible as integer
>>> literal" has the meaning we don't want, with no hint of ambiguity:
>>> "you can go from a concrete type to a literal" (rather than the
>>> correct "you can go from a literal to a concrete type").
>> I'm not opposed to “By” if many more people think it's clearer.
> I am not either.  I want you and the core team to choose what you feel
> is the best name after considering all of the input and trust you to
> make the right decision.

Well, nobody who like “As” has objected to “By,” so let's go with that one.


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