[swift-evolution] map-like operation that returns a dictionary

[Craig Cruden]

> 
> 
> I named the method(s) „toDict“ instead of „map“ because map normally returns a collection which is either the same as the receiver or a simple one.
> The second version is more general and allows to do things like
> 
> let dict = ["Tom", "Dick", "Harry"].enumerate().toDict { (index, value) in (index + 1, value) }
> 

Map would probably be a more correct mathematically speaking — but it would be inconsistent with the naming convention already chosen for Swift.  So for Swift - toDict (or toDictionary) would be the best choice.



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