CommutativeMonoid<T> mixin
CommutativeMonoid
represents a commutative monoid.
A monoid is commutative
if for all x
and y
, combine(x, y) == combine(y, x)
.
 Superclass Constraints
 Monoid<
T>  CommutativeSemigroup<
T>
 Monoid<
Properties
 empty → T

Return the identity element for this monoid.
readonlyinherited
 hashCode → int

The hash code for this object.
readonlyinherited
 runtimeType → Type

A representation of the runtime type of the object.
readonlyinherited
Methods

combine(
T x, T y) → T 
Associative operation which combines two values.
inherited

combineN(
T a, int n) → T 
Return
a
appended to itselfn
times.inherited 
intercalate(
T middle) → Semigroup< T> 
Return a
Semigroup
which insertsmiddle
between each pair of elements.inherited 
isEmpty(
T a, Eq< T> eq) → bool 
Tests if
a
is the identity (empty
).inherited 
noSuchMethod(
Invocation invocation) → dynamic 
Invoked when a nonexistent method or property is accessed.
inherited

reverse(
) → CommutativeMonoid< T> 
Return a
CommutativeMonoid
that reverses the order.override 
toString(
) → String 
A string representation of this object.
inherited
Operators

operator ==(
Object other) → bool 
The equality operator.
inherited
Static Methods

instance<
A> (A emptyValue, A f(A a1, A a2)) → CommutativeMonoid< A> 
Create a
CommutativeMonoid
instance from the given function and empty value.override