UnmodifiableMapMixin<K, V> class Null safety

Mixin class that implements a throwing version of all map operations that change the Map.

Implemented types

Constructors

UnmodifiableMapMixin()

Properties

entries Iterable<MapEntry<K, V>>
The map entries of this.
read-only, inherited
first ← dynamic
Throws an UnsupportedError; operations that change the map are disallowed.
write-only
hashCode int
The hash code for this object.
read-only, inherited
isEmpty bool
Whether there is no key/value pair in the map.
read-only, inherited
isNotEmpty bool
Whether there is at least one key/value pair in the map.
read-only, inherited
keys Iterable<K>
The keys of this.
read-only, inherited
last ← dynamic
Throws an UnsupportedError; operations that change the map are disallowed.
write-only
length int
The number of key/value pairs in the map.
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
values Iterable<V>
The values of this.
read-only, inherited

Methods

addAll(Map<K, V> other) → void
Throws an UnsupportedError; operations that change the map are disallowed.
override
addEntries(Iterable<MapEntry<K, V>> newEntries) → void
Adds all key/value pairs of newEntries to this map.
inherited
cast<RK, RV>() Map<RK, RV>
Provides a view of this map as having RK keys and RV instances, if necessary.
inherited
clear() → void
Throws an UnsupportedError; operations that change the map are disallowed.
override
containsKey(Object? key) bool
Whether this map contains the given key.
inherited
containsValue(Object? value) bool
Whether this map contains the given value.
inherited
forEach(void action(K key, V value)) → void
Applies action to each key/value pair of the map.
inherited
map<K2, V2>(MapEntry<K2, V2> convert(K key, V value)) Map<K2, V2>
Returns a new map where all entries of this map are transformed by the given convert function.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
putIfAbsent(K key, V ifAbsent()) → V
Throws an UnsupportedError; operations that change the map are disallowed.
override
remove(Object? key) → V
Throws an UnsupportedError; operations that change the map are disallowed.
override
removeWhere(bool test(K key, V value)) → void
Removes all entries of this map that satisfy the given test.
inherited
toString() String
A string representation of this object.
inherited
update(K key, V update(V value), {V ifAbsent()?}) → V
Updates the value for the provided key.
inherited
updateAll(V update(K key, V value)) → void
Updates all values.
inherited

Operators

operator ==(Object other) bool
The equality operator.
inherited
operator [](Object? key) → V?
The value for the given key, or null if key is not in the map.
inherited
operator []=(K key, V value) → void
Throws an UnsupportedError; operations that change the map are disallowed.
override