Package it.unimi.dsi.fastutil.doubles

Class Double2ObjectMaps.Singleton<V>

java.lang.Object
it.unimi.dsi.fastutil.doubles.AbstractDouble2ObjectFunction<V>
it.unimi.dsi.fastutil.doubles.Double2ObjectFunctions.Singleton<V>
it.unimi.dsi.fastutil.doubles.Double2ObjectMaps.Singleton<V>
All Implemented Interfaces:
Double2ObjectFunction<V>, Double2ObjectMap<V>, Function<java.lang.Double,​V>, java.io.Serializable, java.lang.Cloneable, java.util.function.DoubleFunction<V>, java.util.function.Function<java.lang.Double,​V>, java.util.Map<java.lang.Double,​V>
Direct Known Subclasses:
Double2ObjectSortedMaps.Singleton
Enclosing class:
Double2ObjectMaps
public static class Double2ObjectMaps.Singleton<V>
extends Double2ObjectFunctions.Singleton<V>
implements Double2ObjectMap<V>, java.io.Serializable, java.lang.Cloneable
An immutable class representing a type-specific singleton map.

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

See Also:
Serialized Form

  • Method Details

    • containsValue

      public boolean containsValue​(java.lang.Object v)
      Specified by:
      containsValue in interface java.util.Map<java.lang.Double,​V>

    • putAll

      public void putAll​(java.util.Map<? extends java.lang.Double,​? extends V> m)
      Specified by:
      putAll in interface java.util.Map<java.lang.Double,​V>

    • double2ObjectEntrySet

      public ObjectSet<Double2ObjectMap.Entry<V>> double2ObjectEntrySet()
      Description copied from interface: Double2ObjectMap
      Returns a type-specific set view of the mappings contained in this map.

      This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Map.entrySet() so that it returns an ObjectSet of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).

      Specified by:
      double2ObjectEntrySet in interface Double2ObjectMap<V>
      Returns:
      a type-specific set view of the mappings contained in this map.
      See Also:
      Map.entrySet()

    • entrySet

      @Deprecated public ObjectSet<java.util.Map.Entry<java.lang.Double,​V>> entrySet()
      Deprecated.
      Please use the corresponding type-specific method instead.
      Returns a set view of the mappings contained in this map.
      Specified by:
      entrySet in interface Double2ObjectMap<V>
      Specified by:
      entrySet in interface java.util.Map<java.lang.Double,​V>
      Returns:
      a set view of the mappings contained in this map.
      See Also:
      Map.entrySet()

    • keySet

      public DoubleSet keySet()
      Description copied from interface: Double2ObjectMap
      Specified by:
      keySet in interface Double2ObjectMap<V>
      Specified by:
      keySet in interface java.util.Map<java.lang.Double,​V>
      Returns:
      a set view of the keys contained in this map.
      See Also:
      Map.keySet()

    • values

      public ObjectCollection<V> values()
      Description copied from interface: Double2ObjectMap
      Specified by:
      values in interface Double2ObjectMap<V>
      Specified by:
      values in interface java.util.Map<java.lang.Double,​V>
      Returns:
      a set view of the values contained in this map.
      See Also:
      Map.values()

    • isEmpty

      public boolean isEmpty()
      Specified by:
      isEmpty in interface java.util.Map<java.lang.Double,​V>

    • hashCode

      public int hashCode()
      Specified by:
      hashCode in interface java.util.Map<java.lang.Double,​V>
      Overrides:
      hashCode in class java.lang.Object

    • equals

      public boolean equals​(java.lang.Object o)
      Specified by:
      equals in interface java.util.Map<java.lang.Double,​V>
      Overrides:
      equals in class java.lang.Object

    • toString

      public java.lang.String toString()
      Overrides:
      toString in class java.lang.Object