NullableMapExtensions<K, V> extension
Provides an extension method for Map that is nullable.
NullableなMap用の拡張メソッドを提供します。
Properties
-
isEmpty
→ bool
-
Whether there is no key/value pair in the map.
no setter
-
isNotEmpty
→ bool
-
Whether there is at least one key/value pair in the map.
no setter
-
length
→ int
-
The number of key/value pairs in the map.
no setter
Methods
-
containsKey(Object? key)
→ bool
-
Whether this map contains the given
key.
-
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.
-
containsValue(Object? value)
→ bool
-
Whether this map contains the given
value.
-
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.
