[swift-evolution] Add conversion String -> Bool

[Mirek Elsner]

Since the XML and JSON related objects are part of Foundation, I think it would be great to have that functionality in Foundation as well. For “true”, “false”, “1” and “0” (in addition to 1 and 0).

Mirek

> On Jun 4, 2016, at 06:10, Arsen Gasparyan via swift-evolution <swift-evolution at swift.org> wrote:
> 
> Hello,
> 
> It would be great if we had `init?(_ text: String)` for Bool class. Because sometime when you're processing JSON/XML it can help you a lot.
> 
> Examples:
> 
> Bool("true") -> true
> Bool("false") -> false
> Bool("TrUE") -> true
> Bool(" true ") -> nil
> Bool("1") -> nil
> Bool("Y") -> nil
> Bool("whatever") -> nil 
> 
> 
> via https://bugs.swift.org/browse/SR-1282 <https://bugs.swift.org/browse/SR-1282>
> 
> Thanks.
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