<flat_map>: Unwrap flat_(multi)map's iterators - #4650

<flat_map>: Unwrap flat_(multi)map's iterators#4650

Stephan T. Lavavej (StephanTLavavej) merged 3 commits into

microsoft:feature/flat_mapmicrosoft/STL:feature/flat_mapfrom

frederick-vs-ja:unwrap-pairing-iterfrederick-vs-ja/STL:unwrap-pairing-iterCopy head branch name to clipboard