MapExtensions<K, V> extension
Provides extended methods for Map.
Map用の拡張メソッドを提供します。
Properties
-
isJsonEncodable
→ bool
-
If this object is Json encodable,
true is returned.
no setter
Methods
-
addAllIfEmpty(Map<K, V>? others)
→ void
-
Add
others to Map.
-
addWith(Map<K, V> others, Iterable<K> keys)
→ Map<K, V>
-
Set only the value of the key specified by
keys in the map specified by others.
-
containsKeyAll(Iterable<Object?> keys)
→ bool
-
Returns
true if all keys are included in the keys of Map.
-
containsKeyAny(Iterable<Object?> keys)
→ bool
-
Returns
true if any of the keys in Map contain any of the keys in keys.
-
containsValueAll(Iterable<Object?> values)
→ bool
-
Returns
true if the value of Map contains all values.
-
containsValueAny(Iterable<Object?> values)
→ bool
-
Returns
true if the value of Map contains one of values.
-
equalsTo(Map<K, V> others)
→ bool
-
Returns
true if the internals of Map and others are compared and match.
-
get<T>(K key, T orElse)
→ T
-
Retrieves the element
key from Map.
-
getAsDateTime(K key, [DateTime? orElse])
→ DateTime
-
Retrieves the element of
key of type Map from Map.
-
getAsDouble(K key, [double orElse = 0.0])
→ double
-
Retrieves the element of
key of type double from Map.
-
getAsInt(K key, [int orElse = 0])
→ int
-
Retrieves the element of
key of type int from Map.
-
getAsList<T>(K key, [List<T>? orElse])
→ List<T>
-
Retrieves the element of
key of type List from Map.
-
getAsMap<T>(K key, [Map<String, T>? orElse])
→ Map<String, T>
-
Retrieves the element of
key of type Map from Map.
-
getAsSet<T>(K key, [Set<T>? orElse])
→ Set<T>
-
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>
-
Merges elements of
others into Map.
-
toList<T>(T callback(K key, V value))
→ Iterable<T>
-
Returns a list of
callback return values generated from Map.
-
where(bool test(K key, V value))
→ Map<K, V>
-
Extracts only elements for which the return value of the callback given by
test is true.
