Ask Learn
Preview
Ask Learn is an AI assistant that can answer questions, clarify concepts, and define terms using trusted Microsoft documentation.
Please sign in to use Ask Learn.
Sign inThis browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Returns a view of the portion of this map whose keys are
strictly less than toKey
.
[Android.Runtime.Register("headMap", "(Ljava/lang/Object;)Ljava/util/SortedMap;", "GetHeadMap_Ljava_lang_Object_Handler:Java.Util.ISortedMapInvoker, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null")]
public System.Collections.IDictionary HeadMap(Java.Lang.Object? toKey);
[<Android.Runtime.Register("headMap", "(Ljava/lang/Object;)Ljava/util/SortedMap;", "GetHeadMap_Ljava_lang_Object_Handler:Java.Util.ISortedMapInvoker, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null")>]
abstract member HeadMap : Java.Lang.Object -> System.Collections.IDictionary
high endpoint (exclusive) of the keys in the returned map
a view of the portion of this map whose keys are strictly
less than toKey
Returns a view of the portion of this map whose keys are strictly less than toKey
. The returned map is backed by this map, so changes in the returned map are reflected in this map, and vice-versa. The returned map supports all optional map operations that this map supports.
The returned map will throw an IllegalArgumentException
on an attempt to insert a key outside its range.
Java documentation for java.util.SortedMap.headMap(K)
.
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.
Ask Learn is an AI assistant that can answer questions, clarify concepts, and define terms using trusted Microsoft documentation.
Please sign in to use Ask Learn.
Sign in