Add roles declarations to allow safe coercions#194
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thomashoneyman merged 1 commit intopurescript-contrib:mainfrom Dec 4, 2020
Merged
Add roles declarations to allow safe coercions#194thomashoneyman merged 1 commit intopurescript-contrib:mainfrom
thomashoneyman merged 1 commit intopurescript-contrib:mainfrom
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@kl0tl Could you rebase this branch on top of |
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Thank you for rebasing for me Thomas! |
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This allows terms of type
Aff aandParAff ato be coerced to typeAff bandParAff bwhenCoercible a bholds, hence allowing the zero costcoerceinstead ofmap wrapandmap unwrapto introduce and eliminate newtypes under asynchronous computations for instance.