Package it.unimi.dsi.fastutil.objects

Class Object2ReferenceFunctions.Singleton<K,​V>

java.lang.Object
it.unimi.dsi.fastutil.objects.AbstractObject2ReferenceFunction<K,​V>
it.unimi.dsi.fastutil.objects.Object2ReferenceFunctions.Singleton<K,​V>
All Implemented Interfaces:
it.unimi.dsi.fastutil.Function<K,​V>, it.unimi.dsi.fastutil.objects.Object2ReferenceFunction<K,​V>, java.io.Serializable, java.lang.Cloneable, java.util.function.Function<K,​V>
Direct Known Subclasses:
Object2ReferenceMaps.Singleton
Enclosing class:
Object2ReferenceFunctions
public static class Object2ReferenceFunctions.Singleton<K,​V>
extends AbstractObject2ReferenceFunction<K,​V>
implements java.io.Serializable, java.lang.Cloneable
An immutable class representing a type-specific singleton function. Note that the default return value is still settable.

Note that albeit the function is immutable, its default return value may be changed.

This class may be useful to implement your own in case you subclass a type-specific function.

See Also:
Serialized Form

  • Method Summary

    Modifier and Type Method Description
    java.lang.Object clone()  
    boolean containsKey​(java.lang.Object k)  
    V get​(java.lang.Object k)  
    V getOrDefault​(java.lang.Object k, V defaultValue)  
    int size()  

    Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractObject2ReferenceFunction

    defaultReturnValue, defaultReturnValue

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface it.unimi.dsi.fastutil.Function

    apply, clear

    Methods inherited from interface java.util.function.Function

    andThen, compose

    Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2ReferenceFunction

    andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, put, remove

  • Method Details

    • containsKey

      public boolean containsKey​(java.lang.Object k)
      Specified by:
      containsKey in interface it.unimi.dsi.fastutil.Function<K,​V>

    • get

      public V get​(java.lang.Object k)
      Specified by:
      get in interface it.unimi.dsi.fastutil.Function<K,​V>
      Specified by:
      get in interface it.unimi.dsi.fastutil.objects.Object2ReferenceFunction<K,​V>

    • getOrDefault

      public V getOrDefault​(java.lang.Object k, V defaultValue)
      Specified by:
      getOrDefault in interface it.unimi.dsi.fastutil.Function<K,​V>
      Specified by:
      getOrDefault in interface it.unimi.dsi.fastutil.objects.Object2ReferenceFunction<K,​V>

    • size

      public int size()
      Specified by:
      size in interface it.unimi.dsi.fastutil.Function<K,​V>

    • clone

      public java.lang.Object clone()