Add leftTraverse and leftSequence to Bitraverse typeclass #2646
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Unfortunately we can't add methods to traits without breaking binary compatibility on Scala 2.11. |
ikempf
changed the title
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I removed methods from existing traits (Bitraverse and BitraverseSyntax) and moved everything into a new trait BitraverseSyntaxBinCompat0 that is extended by AllSyntaxBinCompat3 and bitraverse. |
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Seems like this is a duplicate of #2606 |
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@LukaJCB You are right it is a duplicate |
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Bitraverse should offer "left" traversing functionality.
Right-traversal is already offered through Traverse typeclass, bi-traversal and left-traversal should both be offered by Bitraverse. This keeps it consistent with Bifunctor (which offers leftMap).
This resolves issue #2474