Package it.unimi.dsi.fastutil.floats

Class FloatCollections.EmptyCollection

java.lang.Object
java.util.AbstractCollection<java.lang.Float>
it.unimi.dsi.fastutil.floats.AbstractFloatCollection
it.unimi.dsi.fastutil.floats.FloatCollections.EmptyCollection
All Implemented Interfaces:
FloatCollection, it.unimi.dsi.fastutil.floats.FloatIterable, java.lang.Iterable<java.lang.Float>, java.util.Collection<java.lang.Float>
Direct Known Subclasses:
FloatBigLists.EmptyBigList, FloatLists.EmptyList, FloatSets.EmptySet
Enclosing class:
FloatCollections
public abstract static class FloatCollections.EmptyCollection
extends AbstractFloatCollection
An immutable class representing an empty type-specific collection.

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

  • Method Summary

    Modifier and Type Method Description
    boolean addAll​(FloatCollection c)
    Adds all elements of the given type-specific collection to this collection.
    boolean addAll​(java.util.Collection<? extends java.lang.Float> c)
    void clear()  
    boolean contains​(float k)
    Returns true if this collection contains the specified element.
    boolean containsAll​(FloatCollection c)
    Checks whether this collection contains all elements from the given type-specific collection.
    boolean containsAll​(java.util.Collection<?> c)
    it.unimi.dsi.fastutil.doubles.DoubleIterator doubleIterator()
    Returns a widened primitive iterator on the elements of this collection.
    it.unimi.dsi.fastutil.doubles.DoubleSpliterator doubleSpliterator()
    Returns widened primitive spliterator on the elements of this collection.
    boolean equals​(java.lang.Object o)  
    void forEach​(FloatConsumer action)  
    void forEach​(java.util.function.Consumer<? super java.lang.Float> action)
    Deprecated.
    int hashCode()  
    FloatBidirectionalIterator iterator()
    Returns a type-specific iterator on the elements of this collection.
    boolean removeAll​(FloatCollection c)
    Remove from this collection all elements in the given type-specific collection.
    boolean removeAll​(java.util.Collection<?> c)
    boolean removeIf​(FloatPredicate filter)
    Remove from this collection all elements which satisfy the given predicate.
    boolean removeIf​(java.util.function.Predicate<? super java.lang.Float> filter)
    Deprecated.
    boolean retainAll​(FloatCollection c)
    Retains in this collection only elements from the given type-specific collection.
    boolean retainAll​(java.util.Collection<?> c)
    int size()  
    it.unimi.dsi.fastutil.floats.FloatSpliterator spliterator()
    Returns a type-specific spliterator on the elements of this collection.
    java.lang.Object[] toArray()  
    <T> T[] toArray​(T[] array)  
    float[] toFloatArray()
    Returns a primitive type array containing the items of this collection.
    float[] toFloatArray​(float[] a)
    Deprecated.

    Methods inherited from class it.unimi.dsi.fastutil.floats.AbstractFloatCollection

    add, add, contains, rem, remove, toArray, toString

    Methods inherited from class java.util.AbstractCollection

    isEmpty

    Methods inherited from class java.lang.Object

    getClass, notify, notifyAll, wait, wait, wait

    Methods inherited from interface java.util.Collection

    isEmpty, toArray

    Methods inherited from interface it.unimi.dsi.fastutil.floats.FloatCollection

    doubleParallelStream, doubleStream, parallelStream, removeIf, stream

    Methods inherited from interface it.unimi.dsi.fastutil.floats.FloatIterable

    forEach

  • Method Details

    • contains

      public boolean contains​(float k)
      Description copied from class: AbstractFloatCollection
      Returns true if this collection contains the specified element.
      Specified by:
      contains in interface FloatCollection
      Overrides:
      contains in class AbstractFloatCollection
      See Also:
      Collection.contains(Object)

    • toArray

      public java.lang.Object[] toArray()
      Specified by:
      toArray in interface java.util.Collection<java.lang.Float>
      Overrides:
      toArray in class java.util.AbstractCollection<java.lang.Float>

    • toArray

      public <T> T[] toArray​(T[] array)
      Specified by:
      toArray in interface java.util.Collection<java.lang.Float>
      Overrides:
      toArray in class java.util.AbstractCollection<java.lang.Float>

    • iterator

      public FloatBidirectionalIterator iterator()
      Description copied from interface: FloatCollection
      Returns a type-specific iterator on the elements of this collection.
      Specified by:
      iterator in interface java.util.Collection<java.lang.Float>
      Specified by:
      iterator in interface FloatCollection
      Specified by:
      iterator in interface it.unimi.dsi.fastutil.floats.FloatIterable
      Specified by:
      iterator in interface java.lang.Iterable<java.lang.Float>
      Specified by:
      iterator in class AbstractFloatCollection
      Returns:
      a type-specific iterator on the elements of this collection.

    • spliterator

      public it.unimi.dsi.fastutil.floats.FloatSpliterator spliterator()
      Description copied from interface: FloatCollection
      Returns a type-specific spliterator on the elements of this collection.

      See Collection.spliterator() for more documentation on the requirements of the returned spliterator.

      Returns:
      a type-specific spliterator on the elements of this collection.

    • size

      public int size()
      Specified by:
      size in interface java.util.Collection<java.lang.Float>
      Specified by:
      size in class java.util.AbstractCollection<java.lang.Float>

    • clear

      public void clear()
      Specified by:
      clear in interface java.util.Collection<java.lang.Float>
      Overrides:
      clear in class java.util.AbstractCollection<java.lang.Float>

    • hashCode

      public int hashCode()
      Specified by:
      hashCode in interface java.util.Collection<java.lang.Float>
      Overrides:
      hashCode in class java.lang.Object

    • equals

      public boolean equals​(java.lang.Object o)
      Specified by:
      equals in interface java.util.Collection<java.lang.Float>
      Overrides:
      equals in class java.lang.Object

    • forEach

      @Deprecated public void forEach​(java.util.function.Consumer<? super java.lang.Float> action)
      Deprecated.

    • containsAll

      public boolean containsAll​(java.util.Collection<?> c)
      Description copied from class: AbstractFloatCollection
      Specified by:
      containsAll in interface java.util.Collection<java.lang.Float>
      Overrides:
      containsAll in class AbstractFloatCollection

    • addAll

      public boolean addAll​(java.util.Collection<? extends java.lang.Float> c)
      Description copied from class: AbstractFloatCollection
      Specified by:
      addAll in interface java.util.Collection<java.lang.Float>
      Overrides:
      addAll in class AbstractFloatCollection

    • removeAll

      public boolean removeAll​(java.util.Collection<?> c)
      Description copied from class: AbstractFloatCollection
      Specified by:
      removeAll in interface java.util.Collection<java.lang.Float>
      Overrides:
      removeAll in class AbstractFloatCollection

    • retainAll

      public boolean retainAll​(java.util.Collection<?> c)
      Description copied from class: AbstractFloatCollection
      Specified by:
      retainAll in interface java.util.Collection<java.lang.Float>
      Overrides:
      retainAll in class AbstractFloatCollection

    • removeIf

      @Deprecated public boolean removeIf​(java.util.function.Predicate<? super java.lang.Float> filter)
      Deprecated.
      Description copied from interface: FloatCollection

    • toFloatArray

      public float[] toFloatArray()
      Description copied from interface: FloatCollection
      Returns a primitive type array containing the items of this collection.
      Specified by:
      toFloatArray in interface FloatCollection
      Overrides:
      toFloatArray in class AbstractFloatCollection
      Returns:
      a primitive type array containing the items of this collection.
      See Also:
      Collection.toArray()

    • toFloatArray

      @Deprecated public float[] toFloatArray​(float[] a)
      Deprecated.
      Description copied from class: AbstractFloatCollection
      Returns a primitive type array containing the items of this collection.

      Note that, contrarily to Collection.toArray(Object[]), this methods just writes all elements of this collection: no special value will be added after the last one.

      Specified by:
      toFloatArray in interface FloatCollection
      Overrides:
      toFloatArray in class AbstractFloatCollection
      Parameters:
      a - if this array is big enough, it will be used to store this collection.
      Returns:
      a primitive type array containing the items of this collection.
      See Also:
      Collection.toArray(Object[])

    • forEach

      public void forEach​(FloatConsumer action)

    • containsAll

      public boolean containsAll​(FloatCollection c)
      Description copied from interface: FloatCollection
      Checks whether this collection contains all elements from the given type-specific collection.
      Specified by:
      containsAll in interface FloatCollection
      Overrides:
      containsAll in class AbstractFloatCollection
      Parameters:
      c - a type-specific collection.
      Returns:
      true if this collection contains all elements of the argument.
      See Also:
      Collection.containsAll(Collection)

    • addAll

      public boolean addAll​(FloatCollection c)
      Description copied from interface: FloatCollection
      Adds all elements of the given type-specific collection to this collection.
      Specified by:
      addAll in interface FloatCollection
      Overrides:
      addAll in class AbstractFloatCollection
      Parameters:
      c - a type-specific collection.
      Returns:
      true if this collection changed as a result of the call.
      See Also:
      Collection.addAll(Collection)

    • removeAll

      public boolean removeAll​(FloatCollection c)
      Description copied from interface: FloatCollection
      Remove from this collection all elements in the given type-specific collection.
      Specified by:
      removeAll in interface FloatCollection
      Overrides:
      removeAll in class AbstractFloatCollection
      Parameters:
      c - a type-specific collection.
      Returns:
      true if this collection changed as a result of the call.
      See Also:
      Collection.removeAll(Collection)

    • retainAll

      public boolean retainAll​(FloatCollection c)
      Description copied from interface: FloatCollection
      Retains in this collection only elements from the given type-specific collection.
      Specified by:
      retainAll in interface FloatCollection
      Overrides:
      retainAll in class AbstractFloatCollection
      Parameters:
      c - a type-specific collection.
      Returns:
      true if this collection changed as a result of the call.
      See Also:
      Collection.retainAll(Collection)

    • removeIf

      public boolean removeIf​(FloatPredicate filter)
      Description copied from interface: FloatCollection
      Remove from this collection all elements which satisfy the given predicate.
      Parameters:
      filter - a predicate which returns true for elements to be removed.
      Returns:
      true if any elements were removed.
      See Also:
      Collection.removeIf(java.util.function.Predicate)

    • doubleIterator

      public it.unimi.dsi.fastutil.doubles.DoubleIterator doubleIterator()
      Description copied from interface: FloatCollection
      Returns a widened primitive iterator on the elements of this collection.

      This method is provided for the purpose of APIs that expect only the JDK's primitive iterators, of which there are only int, long, and double.

      Returns:
      a widened primitive iterator on the elements of this collection.

    • doubleSpliterator

      public it.unimi.dsi.fastutil.doubles.DoubleSpliterator doubleSpliterator()
      Description copied from interface: FloatCollection
      Returns widened primitive spliterator on the elements of this collection.

      This method is provided for the purpose of APIs that expect only the JDK's primitive spliterators, of which there are only int, long, and double.

      Returns:
      a widened primitive spliterator on the elements of this collection.