SetEquality<E> class
Null safety
Equality of sets.
Two sets are considered equal if they have the same number of elements, and the elements of one set can be paired with the elements of the other set, so that each pair are equal.
This equality behaves the same as UnorderedIterableEquality except that it expects sets instead of iterables as arguments.
The equals and hash methods accepts null values,
even if the isValidKey returns false for null.
The hash of null is null.hashCode.
Constructors
-
SetEquality([Equality<
E> elementEquality = const DefaultEquality<Never>()]) -
const
Properties
- hashCode → int
-
The hash code for this object.
read-onlyinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
Methods
-
equals(
Set< E> ? elements1, Set<E> ? elements2) → bool -
Compare two elements for being equal.
inherited
-
hash(
Set< E> ? elements) → int -
Creates a combined hash code for a number of objects.
inherited
-
isValidKey(
Object? o) → bool -
Test whether an object is a valid argument to equals and hash.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited