Implements Semigroup / Monoid instances for Ur#461
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aspiwack merged 1 commit intotweag:masterfrom Aug 28, 2023
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UrSemigroup / Monoid instances for Ur
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Description
This PR adds linear
SemigroupandMonoidinstances forUr, which turns unrestricted ones into linear ones.Motivation
This instance is particuarly useful when one extract unrestricted monoidal value out of linear values; e.g.
foldMapof Pull and/or Push Arrays.I used them to test my custom vector-generic
fromVectorfor pull arrays without allocating vector (corresponding instance definition)