[swift-evolution] Allow ' in variable/constant names?
charlie at charliemonroe.net
Wed Jan 11 09:05:45 CST 2017
> On Jan 11, 2017, at 3:55 PM, Ben Rimmington <me at benrimmington.com> wrote:
>> On 11 Jan 2017, at 13:16, Charlie Monroe wrote:
>> Instead, I'd personally love better character support in Swift in the future and allow a Character literals using ' - just like in C, except with Unicode support:
>> let myChar = 'x' // Character
>> let myChar2 = '∃' // Character
>> let myChar3 = '\0' // NUL Character
>> let myChar4 = 'xyz' // Error from compiler
> This feature was removed (just before the first Swift 1.0 beta). Search for "Single-quoted literals are no longer recognized" in the CHANGELOG.
I'm aware of that and think it's a shame. When you need a Character, you either need to declare the variable with type:
let c: Character = "a"
or use the initializer (which I prefer):
let c = Character("a")
--- but here, this is valid:
let c = Character("ax")
and will compile, yet crash at runtime.
I really hope that special syntax (single-quotes, or any other) is introduced back in the future.
> I'm looking forward to the "String re-evaluation" part of Swift 4 stage 1. Hopefully, the Character type will also be improved.
> -- Ben
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