[swift-evolution] Allow ' in variable/constant names?
davesweeris at mac.com
Wed Jan 11 08:48:11 CST 2017
> On Jan 11, 2017, at 07:43, Karl Wagner via swift-evolution <swift-evolution at swift.org> wrote:
>> On 11 Jan 2017, at 14:08, Tuur Anton via swift-evolution <swift-evolution at swift.org> wrote:
>> I often have related variables. Would be nice to just add ' like I can in Haskell:
>> let foo = "asdf"
>> let foo' = "asdf2"
>> What do you think?
>> swift-evolution mailing list
>> swift-evolution at swift.org
> Ooooh… the mathematician in me would love that.
> let foo = …
> let foo’ = …
> let foo’’ = …
> let foo’’’ = …
> But I suspect the additional complexity to the parser isn’t worth it. When are two bars just two bars, and when are they an empty string literal?
I can't think of any instances where it'd be ambiguous... An empty character literal tacked on to the end of an identifier is a syntax error, right? Likewise if you've got an empty literal just hanging out in the middle of a statement, that's a syntax error as well. "=", "(", and such are all invalid identifier characters, so you couldn't name something that might be confused with an assignment or anything... I can't speak to the difficulty of implementing this, but I don't think it'd break anything. OTOH, I woke up about 5 minutes ago and haven't had my coffee yet.
My inner mathematician would be very happy indeed... +1
- Dave Sweeris
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