it.unimi.dsi.fastutil.chars.CharSets.EmptySet

All Implemented Interfaces:: CharCollection, CharIterable, CharSet, Serializable, Cloneable, Iterable<Character>, Collection<Character>, Set<Character>

Direct Known Subclasses:: CharSortedSets.EmptySet

Enclosing class:: CharSets

public static class CharSets.EmptySet
extends CharCollections.EmptyCollection
implements CharSet, Serializable, 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 Summary

Modifier and Type	Method	Description
`Object`	`clone()`
`boolean`	`equals(Object o)`
`boolean`	`rem(char k)`	Deprecated.
`boolean`	`remove(char ok)`	Removes an element from this set.

Methods inherited from class it.unimi.dsi.fastutil.chars.CharCollections.EmptyCollection

addAll, addAll, clear, contains, hashCode, iterator, removeAll, removeAll, retainAll, retainAll, size, toArray

Methods inherited from class it.unimi.dsi.fastutil.chars.AbstractCharCollection

add, add, contains, containsAll, containsAll, remove, toArray, toCharArray, toCharArray, toString

Methods inherited from class java.util.AbstractCollection

isEmpty, toArray

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.chars.CharCollection

add, addAll, contains, containsAll, removeAll, removeIf, removeIf, retainAll, toArray, toCharArray, toCharArray

Methods inherited from interface it.unimi.dsi.fastutil.chars.CharIterable

forEach, forEach

Methods inherited from interface it.unimi.dsi.fastutil.chars.CharSet

add, contains, iterator, remove

Methods inherited from interface java.util.Collection

parallelStream, stream, toArray

Methods inherited from interface java.util.Set

addAll, clear, containsAll, hashCode, isEmpty, removeAll, retainAll, size, spliterator, toArray, toArray

Method Details
- remove
  
  public boolean remove(char ok)
  
  Description copied from interface: CharSet
  
  Removes an element from this set.
  Note that the corresponding method of a type-specific collection is rem(). This unfortunate situation is caused by the clash with the similarly named index-based method in the List interface.
  
  Specified by:
  
  remove in interface CharSet
  
  See Also:
  
  Collection.remove(Object)
- clone
  
  public Object clone()
- equals
  
  public boolean equals(Object o)
  
  Specified by:
  
  equals in interface Collection<Character>
  
  Specified by:
  
  equals in interface Set<Character>
  
  Overrides:
  
  equals in class CharCollections.EmptyCollection
- rem
  
  @Deprecated public boolean rem(char k)
  
  Deprecated.
  
  Description copied from class: AbstractCharCollection
  
  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().
  This implementation iterates over the elements in the collection, looking for the specified element and tries to remove it.
  
  Specified by:
  
  rem in interface CharCollection
  
  Specified by:
  
  rem in interface CharSet
  
  Overrides:
  
  rem in class AbstractCharCollection
  
  See Also:
  
  Collection.remove(Object)

Class CharSets.EmptySet