Data.Semigroup
class
Semigroup
a
Semigroups
data
Min
a
data
Max
a
data
First
a
data
Last
a
data
WrappedMonoid
m
Re-exported monoids from Data.Monoid
class
Monoid
a
data
Dual
a
data
Endo
a
data
All
data
Any
data
Sum
a
data
Product
a
A better monoid for Maybe
data
Option
a
option
Difference lists of a semigroup
diff
cycle1