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Ambiguous Vector instances #2891

durban opened this issue Jun 14, 2019 · 1 comment


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commented Jun 14, 2019

The implicits catsKernelStdPartialOrderForVector and catsKernelStdHashForVector (here) are ambiguous if A has both PartialOrder and Hash instances, and we're looking for an Eq[Vector[A]]. (List seems to have the same problem.)

@kailuowang kailuowang added the bug label Jun 14, 2019


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commented Jun 14, 2019

I am not sure if we can fix it for Scala 2.11 without breaking BC. We might have to leave it as is on 2.11 and do a scala version specific fix for 2.12+. Or we simply drop 2.11 which is more likely now than before.

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