MapExtensions<K, V> extension

Provides extended methods for Map.

Map用の拡張メソッドを提供します。

on

• Map<K, V>

Properties

isJsonEncodable → bool

Available on Map<K, V>, provided by the MapExtensions extension

If this object is Json encodable, true is returned.

no setter

Methods

addAllIfEmpty(Map<K, V>? others) → void

Available on Map<K, V>, provided by the MapExtensions extension

Add others to Map.

addWith(Map<K, V> others, Iterable<K> keys) → Map<K, V>

Available on Map<K, V>, provided by the MapExtensions extension

Set only the value of the key specified by keys in the map specified by others.

containsKeyAll(Iterable<Object?> keys) → bool

Available on Map<K, V>, provided by the MapExtensions extension

Returns true if all keys are included in the keys of Map.

containsKeyAny(Iterable<Object?> keys) → bool

Available on Map<K, V>, provided by the MapExtensions extension

Returns true if any of the keys in Map contain any of the keys in keys.

containsValueAll(Iterable<Object?> values) → bool

Available on Map<K, V>, provided by the MapExtensions extension

Returns true if the value of Map contains all values.

containsValueAny(Iterable<Object?> values) → bool

Available on Map<K, V>, provided by the MapExtensions extension

Returns true if the value of Map contains one of values.

equalsTo(Map<K, V> others) → bool

Available on Map<K, V>, provided by the MapExtensions extension

Returns true if the internals of Map and others are compared and match.

get<T>(K key, T orElse) → T

Available on Map<K, V>, provided by the MapExtensions extension

Retrieves the element key from Map.

getAsDateTime(K key, [DateTime? orElse]) → DateTime

Available on Map<K, V>, provided by the MapExtensions extension

Retrieves the element of key of type Map from Map.

getAsDouble(K key, [double orElse = 0.0]) → double

Available on Map<K, V>, provided by the MapExtensions extension

Retrieves the element of key of type double from Map.

getAsInt(K key, [int orElse = 0]) → int

Available on Map<K, V>, provided by the MapExtensions extension

Retrieves the element of key of type int from Map.

getAsList<T>(K key, [List<T>? orElse]) → List<T>

Available on Map<K, V>, provided by the MapExtensions extension

Retrieves the element of key of type List from Map.

getAsMap<T>(K key, [Map<String, T>? orElse]) → Map<String, T>

Available on Map<K, V>, provided by the MapExtensions extension

Retrieves the element of key of type Map from Map.

getAsSet<T>(K key, [Set<T>? orElse]) → Set<T>

Available on Map<K, V>, provided by the MapExtensions extension

Retrieves the element of key of type Set from Map.

merge(Map<K, V>? others, {K convertKeys(K key)?, V convertValues(V value)?}) → Map<K, V>

Available on Map<K, V>, provided by the MapExtensions extension

Merges elements of others into Map.

toList<T>(T callback(K key, V value)) → Iterable<T>

Available on Map<K, V>, provided by the MapExtensions extension

Returns a list of callback return values generated from Map.

where(bool test(K key, V value)) → Map<K, V>

Available on Map<K, V>, provided by the MapExtensions extension

Extracts only elements for which the return value of the callback given by test is true.