IMap.PutIfAbsent(Object, Object) Method
Definition
Important
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If the specified key is not already associated with a value (or is mapped
to null) associates it with the given value and returns
null, else returns the current value.
[Android.Runtime.Register("putIfAbsent", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", "GetPutIfAbsent_Ljava_lang_Object_Ljava_lang_Object_Handler:Java.Util.IMap, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null", ApiSince=24)]
public virtual Java.Lang.Object? PutIfAbsent (Java.Lang.Object? key, Java.Lang.Object? value);[<Android.Runtime.Register("putIfAbsent", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", "GetPutIfAbsent_Ljava_lang_Object_Ljava_lang_Object_Handler:Java.Util.IMap, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null", ApiSince=24)>]
abstract member PutIfAbsent : Java.Lang.Object * Java.Lang.Object -> Java.Lang.Object
override this.PutIfAbsent : Java.Lang.Object * Java.Lang.Object -> Java.Lang.ObjectParameters
- key
- Object
key with which the specified value is to be associated
- value
- Object
value to be associated with the specified key
Returns
the previous value associated with the specified key, or
null if there was no mapping for the key.
(A null return can also indicate that the map
previously associated null with the key,
if the implementation supports null values.)
- Attributes
Remarks
If the specified key is not already associated with a value (or is mapped to null) associates it with the given value and returns null, else returns the current value.
Added in 1.8.
Java documentation for java.util.Map.putIfAbsent(K, V).
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.