Proposal: Add Data.Semigroup to base, as a superclass of Monoid
gabriel439 at gmail.com
Wed Jun 12 00:04:04 CEST 2013
I think types that lack an empty element are a misfeature. They usually
end up contaminating everything they touch, which is why semigroups forms
an entire parallel ecosystem of its own. This is a very slippery slope
that won't end with the addition of `Data.Semigroup` and once it is in it
will be impossible to take it out.
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