monoidal-containers-0.6.3.0: Containers with monoidal accumulation
Containers with merging via monoidal accumulation. The
Monoid
instances
provided by the
containers
and
unordered-containers
packages merge
structures in a left-biased manner instead of using the underlying monoidal
structure of the value.
This package wraps the types provided by these packages, but provides
Monoid
instances implemented in terms of the value type's
mappend
. For instance,
the
Monoid
Map
instance looks like,
instance (Ord k, Semigroup a) => Monoid (MonoidalMap k a)
- Data