UnmodifiableMapView<K, V> class
View of a Map that disallow modifying the map.
A wrapper around a Map
that forwards all members to the map provided in
the constructor, except for operations that modify the map.
Modifying operations throw instead.
Constructors
- UnmodifiableMapView(Map<K, V> map)
Properties
- entries → Iterable<MapEntry<K, V>>
-
The map entries of this.
read-only, inherited
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- isEmpty → bool
-
Returns true if there is no key/value pair in the map.
read-only, inherited
- isNotEmpty → bool
-
Returns true if there is at least one key/value pair in the map.
read-only, inherited
- keys → Iterable<K>
-
The keys of this. [...]
read-only, inherited
- 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 -
This operation is not supported by an unmodifiable map.
inherited
-
addEntries(
Iterable<Object> entries) → 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 andRV
instances, if necessary. [...]inherited -
clear(
) → void -
This operation is not supported by an unmodifiable map.
inherited
-
containsKey(
Object key) → bool -
Returns true if this map contains the given
key
. [...]inherited -
containsValue(
Object value) → bool -
Returns true if this map contains the given
value
. [...]inherited -
forEach(
void action(K key, V value)) → void -
Applies
f
to each key/value pair of the map. [...]inherited -
map<K2, V2>(
MapEntry<K2, V2> transform(K key, V value)) → Map<K2, V2> -
Returns a new map where all entries of this map are transformed by
the given
f
function.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
putIfAbsent(
K key, V ifAbsent()) → V -
This operation is not supported by an unmodifiable map.
inherited
-
remove(
Object key) → V -
This operation is not supported by an unmodifiable map.
inherited
-
removeWhere(
bool test(K key, V value)) → void -
Removes all entries of this map that satisfy the given
predicate
.inherited -
retype<RK, RV>(
) → Map<RK, RV> -
Provides a view of this map as having
RK
keys andRV
instances, if necessary. [...]inherited -
toString(
) → String -
Returns 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 ==(
other) → bool -
The equality operator. [...]
inherited
-
operator [](
Object key) → V -
Returns the value for the given
key
or null ifkey
is not in the map. [...]inherited -
operator []=(
K key, V value) → void -
Associates the
key
with the givenvalue
. [...]inherited