Package it.unimi.dsi.fastutil.objects

Class Reference2LongFunctions.Singleton<K>

java.lang.Object
it.unimi.dsi.fastutil.objects.AbstractReference2LongFunction<K>
it.unimi.dsi.fastutil.objects.Reference2LongFunctions.Singleton<K>
All Implemented Interfaces:
it.unimi.dsi.fastutil.Function<K,​java.lang.Long>, it.unimi.dsi.fastutil.objects.Reference2LongFunction<K>, java.io.Serializable, java.lang.Cloneable, java.util.function.Function<K,​java.lang.Long>, java.util.function.ToLongFunction<K>
Direct Known Subclasses:
Reference2LongMaps.Singleton
Enclosing class:
Reference2LongFunctions
public static class Reference2LongFunctions.Singleton<K>
extends AbstractReference2LongFunction<K>
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)  
    long getLong​(java.lang.Object k)  
    long getOrDefault​(java.lang.Object k, long defaultValue)  
    int size()  

    Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2LongFunction

    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

    compose

    Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2LongFunction

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

  • Method Details

    • containsKey

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

    • getLong

      public long getLong​(java.lang.Object k)
      Specified by:
      getLong in interface it.unimi.dsi.fastutil.objects.Reference2LongFunction<K>

    • getOrDefault

      public long getOrDefault​(java.lang.Object k, long defaultValue)
      Specified by:
      getOrDefault in interface it.unimi.dsi.fastutil.objects.Reference2LongFunction<K>

    • size

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

    • clone

      public java.lang.Object clone()