On Jul 7, 2015, at 00:02 , Rick Mann <rm...@latencyzero.com> wrote:
>
> I want to implement some support for HTTP Headers in enums, such that I can
> write this:
>
> extension
> NSMutableURLRequest
> {
> func
> set(inHeader : String, _ inVal : String)
> {
> self.setValue(inVal.rawValue, forHTTPHeaderField:
> inHeader.rawValue())
> }
> }
>
> and then call it like this:
>
> req.set(.ContentType, .JSON)
> req.set(.ContentType, "some other type")
>
Like this:
> extension NSMutableURLRequest
> {
> func set<T, U where T: RawRepresentable, T.RawValue == String, U:
> RawRepresentable, U.RawValue == String> (inHeader : T, _ inVal : U)
> {
> self.setValue (inVal.rawValue, forHTTPHeaderField:
> inHeader.rawValue)
> }
>
> }
At least, that compiles in a playground. As you say, overloading should work
for pure String values of the second parameter.
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