Why the callback is special ? The compiler should has a warning for unused parameters of function.
I think this is enough. More works should be leaved for a lint tool. James Campbell via swift-evolution <[email protected]>于2016年8月17日 周三06:39写道： > I'm not sure about that last question, I guess someone who knows more > about it than me could answer. > > *___________________________________* > > *James⎥Lead Hustler* > > *[email protected] <[email protected]>⎥supmenow.com > <http://supmenow.com>* > > *Sup* > > *Runway East * > > *10 Finsbury Square* > > *London* > > * EC2A 1AF * > > On 16 August 2016 at 23:37, James Campbell <[email protected]> wrote: > >> @noescape is a hint that the callback will only be called once and allows >> compiler to optimise, we may or may not be able to combine @required >> functionality into that but it looks like it was rejected for now. >> >> @required is a compiler hint / sanity check to enforce that the callback >> is actually called once by the developer. There is no focus on any compiler >> enhancements other than that. >> >> > > _______________________________________________ > swift-evolution mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-evolution >
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