KtMapExtensions<K, V> extension

on

Properties

dart → Map<K, V>
Returns a read-only dart:core Map
no setter

Methods

all(bool predicate(K key, V value)) → bool
Returns true if all entries match the given predicate. predicate must not be null.
any(bool predicate(K key, V value)) → bool
Returns true if there is at least one entry that matches the given predicate. predicate must not be null.
count([bool predicate(KtMapEntry<K, V>)?]) → int
Returns the number of entries matching the given predicate or the number of entries when predicate = null.
filter(bool predicate(KtMapEntry<K, V> entry)) → KtMap<K, V>
Returns a new map containing all key-value pairs matching the given predicate.
filterKeys(bool predicate(K)) → KtMap<K, V>
Returns a map containing all key-value pairs with keys matching the given predicate.
filterNot(bool predicate(KtMapEntry<K, V> entry)) → KtMap<K, V>
Returns a new map containing all key-value pairs not matching the given predicate.
filterNotTo<M extends KtMutableMap>(M destination, bool predicate(KtMapEntry<K, V> entry)) → M
Appends all entries not matching the given predicate into the given destination.
filterTo<M extends KtMutableMap>(M destination, bool predicate(KtMapEntry<K, V> entry)) → M
Appends all entries matching the given predicate into the mutable map given as destination parameter.
filterValues(bool predicate(V)) → KtMap<K, V>
Returns a map containing all key-value pairs with values matching the given predicate.
forEach(dynamic action(K key, V value)) → void
Performs given action on each key/value pair from this map.
getOrElse(K key, V defaultValue()) → V
Returns the value for the given key, or the result of the defaultValue function if there was no entry for the given key.
getValue(K key) → V
Returns the value for the given key or throws an exception if there is no such key in the map.
ifEmpty<R extends KtMap<K, V>>(R defaultValue()) → R
Returns this map if it's not empty or the result of calling defaultValue function if the map is empty.
isNotEmpty() → bool
Returns true if this map is not empty.
iterator() → KtIterator<KtMapEntry<K, V>>
Returns an Iterator over the entries in the Map.
map<R>(R transform(KtMapEntry<K, V> entry)) → KtList<R>
Returns a list containing the results of applying the given transform function to each entry in the original map.
mapKeys<R>(R transform(KtMapEntry<K, V>)) → KtMap<R, V>
Returns a new Map with entries having the keys obtained by applying the transform function to each entry in this Map and the values of this map.
mapKeysTo<R, M extends KtMutableMap>(M destination, R transform(KtMapEntry<K, V> entry)) → M
Populates the given destination map with entries having the keys obtained by applying the transform function to each entry in this Map and the values of this map.
mapTo<R, M extends KtMutableCollection>(M destination, R transform(KtMapEntry<K, V> entry)) → M
Applies the given transform function to each entry of the original map and appends the results to the given destination.
mapValues<R>(R transform(KtMapEntry<K, V>)) → KtMap<K, R>
Returns a new map with entries having the keys of this map and the values obtained by applying the transform function to each entry in this Map.
mapValuesTo<R, M extends KtMutableMap>(M destination, R transform(KtMapEntry<K, V> entry)) → M
Populates the given destination map with entries having the keys of this map and the values obtained by applying the transform function to each entry in this Map.
maxBy<R extends Comparable>(R selector(KtMapEntry<K, V>)) → KtMapEntry<K, V>?
Returns the first entry yielding the largest value of the given function or null if there are no entries.
maxWith(Comparator<KtMapEntry<K, V>> comparator) → KtMapEntry<K, V>?
Returns the first entry having the largest value according to the provided comparator or null if there are no entries.
minBy<R extends Comparable>(R selector(KtMapEntry<K, V>)) → KtMapEntry<K, V>?
Returns the first entry yielding the smallest value of the given function or null if there are no entries.
minus(K key) → KtMap<K, V>
Returns a map containing all entries of the original map except the entry with the given key.
minWith(Comparator<KtMapEntry<K, V>> comparator) → KtMapEntry<K, V>?
Returns the first entry having the smallest value according to the provided comparator or null if there are no entries.
none(bool predicate(K key, V value)) → bool
Returns true if there is no entries in the map that match the given predicate. predicate must not be null.
plus(KtMap<K, V> map) → KtMap<K, V>
Creates a new read-only map by replacing or adding entries to this map from another map.
toList() → KtList<KtPair<K, V>>
Returns a KtList containing all key-value pairs.
toMap() → KtMap<K, V>
Returns a new read-only map containing all key-value pairs from the original map.
toMutableMap() → KtMutableMap<K, V>
Returns a new mutable map containing all key-value pairs from the original map.

Operators

operator +(KtMap<K, V> map) → KtMap<K, V>
Creates a new read-only map by replacing or adding entries to this map from another map.
operator -(K key) → KtMap<K, V>
Returns a map containing all entries of the original map except the entry with the given key.