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Add unionsWith
#147
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Add unionsWith
#147
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Straightforward combo of `unionWith` and `unions`. Haskell's `container` has it.
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👍, see #55. I think this should at least have a few tests, though. In particular I think there are at least a couple of different sensible implementations of this function, based on which direction we fold or which direction we apply the given combining function in; a test should ideally prevent us from accidentally switching between two of these in a future release without noticing. |
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@hdgarrood Added a couple test mirroring those for |
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Straightforward combo of
unionWithandunions. Haskell'scontainershas it.