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

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