Merging Closure into Protocols

[dnadoba (David Nadoba)]

Turns out there has already been a pitch for something similar:

Anonymous Structs

@Nickolas_Pohilets and I are working on a proposal to introduce anonymous structs in Swift. This pitch reduces the syntactic burden for users of APIs that use protocol-oriented design. In many cases the usage-site syntactic weight becomes on par with that of closure-based APIs. We're looking forward to your feedback! For anyone interested in background reading, this proposal is a result of conversation that happened in the Equality of functions thread. I will be maintaining an updated draft…