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A collection of monoids
I think the Dual of monoid should swap the operation on it's concat
: https://hackage.haskell.org/package/base-4.9.0.0/docs/Data-Monoid.html#t:Dual
otherwise it make no sense to wrap them on Dual. isn't that correct?
After sleeping over it, I may think we should change Min
Max
to use <
>
instead of Math.min/max
.
This way, we could support Min
and Max
for strings. what do you think?
I'll create another PR if you like.
Don't think most of these monoids should have a map
since they are specific in their value. Yes?
For instance Conjunction must hold a bool
Something that always irked me about haskell is the getSum
/getProduct
etc functions. It makes writing functions less generic than just passing in the favored monoid.
const any = xs => xs.foldMap(Any).getAny
const all = xs => xs.foldMap(All).getAll
I had luck with working with a common getter like getVal
Thoughts?
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