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mapping over a field, changing its type? #34

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Profpatsch opened this issue Jul 8, 2022 · 0 comments

Profpatsch commented Jul 8, 2022 •

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Is there a specific implementation reason why this function is not possible:

modify :: forall l v v2 lts rts. (Has lts l v, ???) => FldProxy l -> (v -> v2) -> Rec lts -> Rec rts

Is it impossible to have a constraint that relates lts to rts?

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