| // RUN: %swift -swift-version 4 -typecheck -verify %s |
| |
| func flatMapOnSequence< |
| S : Sequence |
| >(xs: S, f: (S.Element) -> S.Element?) { |
| _ = xs.flatMap(f) // expected-warning {{'flatMap' is deprecated: Please use compactMap(_:) for the case where closure returns an optional value}} expected-note {{compactMap}} |
| } |
| |
| func flatMapOnLazySequence< |
| S : LazySequenceProtocol |
| >(xs: S, f: (S.Element) -> S.Element?) { |
| _ = xs.flatMap(f) // expected-warning {{'flatMap' is deprecated: Please use compactMap(_:) for the case where closure returns an optional value}} expected-note {{compactMap}} |
| } |
| |
| func flatMapOnLazyCollection< |
| C : LazyCollectionProtocol |
| >(xs: C, f: (C.Element) -> C.Element?) { |
| _ = xs.flatMap(f) // expected-warning {{'flatMap' is deprecated: Please use compactMap(_:) for the case where closure returns an optional value}} expected-note {{compactMap}} |
| } |
| |
| func flatMapOnLazyBidirectionalCollection< |
| C : LazyCollectionProtocol & BidirectionalCollection |
| >(xs: C, f: (C.Element) -> C.Element?) |
| where C.Elements : BidirectionalCollection { |
| _ = xs.flatMap(f) // expected-warning {{'flatMap' is deprecated: Please use compactMap(_:) for the case where closure returns an optional value}} expected-note {{compactMap}} |
| } |
| |
| func flatMapOnCollectinoOfStrings< |
| C : Collection |
| >(xs: C, f: (C.Element) -> String?) { |
| _ = xs.flatMap(f) // expected-warning {{'flatMap' is deprecated: Please use compactMap(_:) for the case where closure returns an optional value}} expected-note {{compactMap}} |
| } |
