NumInstances
bifunctors
NumInstances | bifunctors | |
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- | 1 | |
7 | 56 | |
- | - | |
0.0 | 5.6 | |
about 2 years ago | about 2 months ago | |
Haskell | Haskell | |
BSD 3-clause "New" or "Revised" License | BSD 3-clause "New" or "Revised" License |
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NumInstances
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Tracking mentions began in Dec 2020.
bifunctors
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Why is the maybe monad transformer defined as MaybeT { runMaybeT :: m (Maybe a) } instead of MaybeT { runMaybeT :: Maybe (m a) } ?
But it is possible to derive using a newtype of a tuple with its arguments reversed: Flip (,) s. If we get the (Biapplicative bi, Monoid b) => Applicative (Flip bi b) instance (issue). It will require a constraint to restrict m to have a representational argument because otherwise we cannot coerce through it.
What are some alternatives?
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hierarchy