[swift-evolution] Allow ' in variable/constant names?

[Karl Wagner]

> 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?
> 
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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?

Karl