DeepCollectionEquality class Null safety
Deep equality on collections.
Recognizes lists, sets, iterables and maps and compares their elements using deep equality as well.
Non-iterable/map objects are compared using a configurable base equality.
Works in one of two modes: ordered or unordered.
In ordered mode, lists and iterables are required to have equal elements in the same order. In unordered mode, the order of elements in iterables and lists are not important.
A list is only equal to another list, likewise for sets and maps. All other iterables are compared as iterables only.
- Implemented types
Constructors
- DeepCollectionEquality([Equality base = const DefaultEquality<Never>()])
-
const
- DeepCollectionEquality.unordered([Equality base = const DefaultEquality<Never>()])
-
Creates a deep equality on collections where the order of lists and
iterables are not considered important. That is, lists and iterables are
treated as unordered iterables.
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(
dynamic e1, dynamic e2) → bool -
Compare two elements for being equal.
override
-
hash(
Object? o) → int -
Creates a combined hash code for a number of objects.
override
-
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