[swift-evolution] [Accepted and Focused Re-review] SE-0187: Introduce Sequence.filterMap(_:)

[Jean-Daniel]

> 
> Here's a variety of possible new names, in descending order of personal preference:
> 
> mapUnwrappingSome
> mapAndUnwrap      // Thanks Nevin, this is surprisingly clear.
> mapUnwrapSome
> mapUnwrapIfSome
> mapSome           // For these last three, it's unclear when nil elements are dropped. Before or after the map?
> mapNonNil
> mapStrippingNil
> 

An other explicit alternative

mapIfNotNil()


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