Class DoubleSets.EmptySet

java.lang.Object
java.util.AbstractCollection<java.lang.Double>
All Implemented Interfaces:
DoubleCollection, DoubleIterable, DoubleSet, java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<java.lang.Double>, java.util.Collection<java.lang.Double>, java.util.Set<java.lang.Double>
Direct Known Subclasses:
DoubleSortedSets.EmptySet
Enclosing class:
DoubleSets

public static class DoubleSets.EmptySet
extends DoubleCollections.EmptyCollection
implements DoubleSet, java.io.Serializable, java.lang.Cloneable
An immutable class representing the empty set and implementing a type-specific set interface.

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

See Also:
Serialized Form
  • Method Details

    • remove

      public boolean remove​(double ok)
      Description copied from interface: DoubleSet
      Removes an element from this set.
      Specified by:
      remove in interface DoubleSet
      See Also:
      Collection.remove(Object)
    • clone

      public java.lang.Object clone()
    • equals

      public boolean equals​(java.lang.Object o)
      Specified by:
      equals in interface java.util.Collection<java.lang.Double>
      Specified by:
      equals in interface java.util.Set<java.lang.Double>
      Overrides:
      equals in class DoubleCollections.EmptyCollection
    • rem

      @Deprecated public boolean rem​(double k)
      Deprecated.
      Description copied from class: AbstractDoubleCollection
      Removes a single instance of the specified element from this collection, if it is present (optional operation).

      Note that this method should be called remove(), but the clash with the similarly named index-based method in the List interface forces us to use a distinguished name. For simplicity, the set interfaces reinstates remove().

      Specified by:
      rem in interface DoubleCollection
      Specified by:
      rem in interface DoubleSet
      Overrides:
      rem in class AbstractDoubleCollection
      See Also:
      Collection.remove(Object)