Nice… thank you Marco
> On Jul 26, 2015, at 4:43 PM, Marco S Hyman <[email protected]> wrote: > >> func genericFor<T>(s:String) -> T { >> >> return T(s)! // error. ’T’ cannot be constructed because it has no >> accessible initializers >> } > > At compile time there is no way of determining if T has an initializer that > takes a string. You could do something like this > > ---------------- > > protocol InitFromString { > init?(_ value: String) > } > > func genericFor<T: InitFromString>(s:String) -> T { > > return T(s)! > } > > ---------------- > > Then add extensions to the various types you want to convert to make sure > they conform to the InitFromString protocol. > _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
