Fix embarrassing traverse bugs 馃檲 #34
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For an empty product we have to still wrap it in `pure`. This wasn't caught because case objects are covered by `Const`.
joroKr21
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joroKr21
commented
Sep 25, 2021
| if (n == 0) x0 | ||
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| def prepend(xs: List[Any])(x: Any) = x :: xs | ||
| def fromList(xs: List[Any]) = |
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Or use a Vector - I can't tell which is better 馃し - it has to be immutable though
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This fixes 3 bugs in
traverse:pure.This wasn't caught because case objects are covered by
Const.iwhen theApplicativeis lazy.Arrayas an accumulator, e.g. when theApplicativeis forList.