Package it.unimi.dsi.fastutil.doubles

Class DoubleLists.EmptyList

java.lang.Object
java.util.AbstractCollection<Double>
it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection
it.unimi.dsi.fastutil.doubles.DoubleCollections.EmptyCollection
it.unimi.dsi.fastutil.doubles.DoubleLists.EmptyList
All Implemented Interfaces:
DoubleCollection, DoubleIterable, DoubleList, Serializable, Cloneable, Comparable<List<? extends Double>>, Iterable<Double>, Collection<Double>, List<Double>, RandomAccess, SequencedCollection<Double>
Enclosing class:
DoubleLists
public static class DoubleLists.EmptyList extends DoubleCollections.EmptyCollection implements DoubleList, RandomAccess, Serializable, Cloneable
An immutable class representing an empty type-specific list.

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

See Also:

  • Method Details

    • getDouble

      public double getDouble(int i)
      Description copied from interface: DoubleList
      Returns the element at the specified position in this list.
      Specified by:
      getDouble in interface DoubleList
      See Also:

    • rem

      public boolean rem(double k)
      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
      Overrides:
      rem in class AbstractDoubleCollection
      See Also:

    • removeDouble

      public double removeDouble(int i)
      Description copied from interface: DoubleList
      Removes the element at the specified position in this list (optional operation).
      Specified by:
      removeDouble in interface DoubleList
      See Also:

    • add

      public void add(int index, double k)
      Description copied from interface: DoubleList
      Inserts the specified element at the specified position in this list (optional operation).
      Specified by:
      add in interface DoubleList
      See Also:

    • set

      public double set(int index, double k)
      Description copied from interface: DoubleList
      Replaces the element at the specified position in this list with the specified element (optional operation).
      Specified by:
      set in interface DoubleList
      See Also:

    • indexOf

      public int indexOf(double k)
      Description copied from interface: DoubleList
      Returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element.
      Specified by:
      indexOf in interface DoubleList
      See Also:

    • lastIndexOf

      public int lastIndexOf(double k)
      Description copied from interface: DoubleList
      Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element.
      Specified by:
      lastIndexOf in interface DoubleList
      See Also:

    • addAll

      public boolean addAll(int i, Collection<? extends Double> c)
      Specified by:
      addAll in interface List<Double>

    • replaceAll

      @Deprecated public void replaceAll(UnaryOperator<Double> operator)
      Deprecated.
      Description copied from interface: DoubleList
      Specified by:
      replaceAll in interface DoubleList
      Specified by:
      replaceAll in interface List<Double>

    • replaceAll

      public void replaceAll(DoubleUnaryOperator operator)
      Description copied from interface: DoubleList
      Replaces each element of this list with the result of applying the operator to that element.
      Specified by:
      replaceAll in interface DoubleList
      Parameters:
      operator - the operator to apply to each element.
      See Also:

    • addAll

      public boolean addAll(DoubleList c)
      Description copied from interface: DoubleList
      Appends all of the elements in the specified type-specific list to the end of this type-specific list (optional operation).
      Specified by:
      addAll in interface DoubleList
      See Also:

    • addAll

      public boolean addAll(int i, DoubleCollection c)
      Description copied from interface: DoubleList
      Inserts all of the elements in the specified type-specific collection into this type-specific list at the specified position (optional operation).
      Specified by:
      addAll in interface DoubleList
      See Also:

    • addAll

      public boolean addAll(int i, DoubleList c)
      Description copied from interface: DoubleList
      Inserts all of the elements in the specified type-specific list into this type-specific list at the specified position (optional operation).
      Specified by:
      addAll in interface DoubleList
      See Also:

    • add

      @Deprecated public void add(int index, Double k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      add in interface DoubleList
      Specified by:
      add in interface List<Double>

    • get

      @Deprecated public Double get(int index)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      get in interface DoubleList
      Specified by:
      get in interface List<Double>

    • add

      @Deprecated public boolean add(Double k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      add in interface Collection<Double>
      Specified by:
      add in interface DoubleCollection
      Specified by:
      add in interface DoubleList
      Specified by:
      add in interface List<Double>
      Overrides:
      add in class AbstractDoubleCollection

    • set

      @Deprecated public Double set(int index, Double k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      set in interface DoubleList
      Specified by:
      set in interface List<Double>

    • remove

      @Deprecated public Double remove(int k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      remove in interface DoubleList
      Specified by:
      remove in interface List<Double>

    • indexOf

      @Deprecated public int indexOf(Object k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      indexOf in interface DoubleList
      Specified by:
      indexOf in interface List<Double>

    • lastIndexOf

      @Deprecated public int lastIndexOf(Object k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      lastIndexOf in interface DoubleList
      Specified by:
      lastIndexOf in interface List<Double>

    • sort

      public void sort(DoubleComparator comparator)
      Description copied from interface: DoubleList
      Sort a list using a type-specific comparator.

      Pass null to sort using natural ordering.

      Specified by:
      sort in interface DoubleList
      See Also:

    • unstableSort

      public void unstableSort(DoubleComparator comparator)
      Description copied from interface: DoubleList
      Sorts this list using a sort not assured to be stable.

      Pass null to sort using natural ordering.

      This differs from List.sort(java.util.Comparator) in that the results are not assured to be stable, but may be a bit faster.

      Unless a subclass specifies otherwise, the results of the method if the list is concurrently modified during the sort are unspecified.

      Specified by:
      unstableSort in interface DoubleList

    • sort

      @Deprecated public void sort(Comparator<? super Double> comparator)
      Deprecated.
      Description copied from interface: DoubleList
      Specified by:
      sort in interface DoubleList
      Specified by:
      sort in interface List<Double>

    • unstableSort

      @Deprecated public void unstableSort(Comparator<? super Double> comparator)
      Deprecated.
      Description copied from interface: DoubleList
      Sorts this list using a sort not assured to be stable.
      Specified by:
      unstableSort in interface DoubleList

    • listIterator

      public DoubleListIterator listIterator()
      Description copied from interface: DoubleList
      Returns a type-specific list iterator on the list.
      Specified by:
      listIterator in interface DoubleList
      Specified by:
      listIterator in interface List<Double>
      See Also:

    • iterator

      public DoubleListIterator iterator()
      Description copied from interface: DoubleCollection
      Returns a type-specific iterator on the elements of this collection.
      Specified by:
      iterator in interface Collection<Double>
      Specified by:
      iterator in interface DoubleCollection
      Specified by:
      iterator in interface DoubleIterable
      Specified by:
      iterator in interface DoubleList
      Specified by:
      iterator in interface Iterable<Double>
      Specified by:
      iterator in interface List<Double>
      Overrides:
      iterator in class DoubleCollections.EmptyCollection
      Returns:
      a type-specific iterator on the elements of this collection.
      See Also:

    • listIterator

      public DoubleListIterator listIterator(int i)
      Description copied from interface: DoubleList
      Returns a type-specific list iterator on the list starting at a given index.
      Specified by:
      listIterator in interface DoubleList
      Specified by:
      listIterator in interface List<Double>
      See Also:

    • subList

      public DoubleList subList(int from, int to)
      Description copied from interface: DoubleList
      Returns a type-specific view of the portion of this list from the index from, inclusive, to the index to, exclusive.
      Specified by:
      subList in interface DoubleList
      Specified by:
      subList in interface List<Double>
      See Also:

    • getElements

      public void getElements(int from, double[] a, int offset, int length)
      Description copied from interface: DoubleList
      Copies (hopefully quickly) elements of this type-specific list into the given array.
      Specified by:
      getElements in interface DoubleList
      Parameters:
      from - the start index (inclusive).
      a - the destination array.
      offset - the offset into the destination array where to store the first element copied.
      length - the number of elements to be copied.

    • removeElements

      public void removeElements(int from, int to)
      Description copied from interface: DoubleList
      Removes (hopefully quickly) elements of this type-specific list.
      Specified by:
      removeElements in interface DoubleList
      Parameters:
      from - the start index (inclusive).
      to - the end index (exclusive).

    • addElements

      public void addElements(int index, double[] a, int offset, int length)
      Description copied from interface: DoubleList
      Add (hopefully quickly) elements to this type-specific list.
      Specified by:
      addElements in interface DoubleList
      Parameters:
      index - the index at which to add elements.
      a - the array containing the elements.
      offset - the offset of the first element to add.
      length - the number of elements to add.

    • addElements

      public void addElements(int index, double[] a)
      Description copied from interface: DoubleList
      Add (hopefully quickly) elements to this type-specific list.
      Specified by:
      addElements in interface DoubleList
      Parameters:
      index - the index at which to add elements.
      a - the array containing the elements.

    • setElements

      public void setElements(double[] a)
      Description copied from interface: DoubleList
      Set (hopefully quickly) elements to match the array given.
      Specified by:
      setElements in interface DoubleList
      Parameters:
      a - the array containing the elements.

    • setElements

      public void setElements(int index, double[] a)
      Description copied from interface: DoubleList
      Set (hopefully quickly) elements to match the array given.
      Specified by:
      setElements in interface DoubleList
      Parameters:
      index - the index at which to start setting elements.
      a - the array containing the elements.

    • setElements

      public void setElements(int index, double[] a, int offset, int length)
      Description copied from interface: DoubleList
      Set (hopefully quickly) elements to match the array given. Sets each in this list to the corresponding elements in the array, as if by 
       ListIterator iter = listIterator(index);
 int i = 0;
 while (i < length) {
        iter.next();
        iter.set(a[offset + i++]);
 }
      However, the exact implementation may be more efficient, taking into account whether random access is faster or not, or at the discretion of subclasses, abuse internals.
      Specified by:
      setElements in interface DoubleList
      Parameters:
      index - the index at which to start setting elements.
      a - the array containing the elements
      offset - the offset of the first element to add.
      length - the number of elements to add.

    • size

      public void size(int s)
      Description copied from interface: DoubleList
      Sets the size of this list.

      If the specified size is smaller than the current size, the last elements are discarded. Otherwise, they are filled with 0/null/false.

      Specified by:
      size in interface DoubleList
      Parameters:
      s - the new size.

    • compareTo

      public int compareTo(List<? extends Double> o)
      Specified by:
      compareTo in interface Comparable<List<? extends Double>>

    • clone

      public Object clone()

    • hashCode

      public int hashCode()
      Specified by:
      hashCode in interface Collection<Double>
      Specified by:
      hashCode in interface List<Double>
      Overrides:
      hashCode in class DoubleCollections.EmptyCollection

    • equals

      public boolean equals(Object o)
      Specified by:
      equals in interface Collection<Double>
      Specified by:
      equals in interface List<Double>
      Overrides:
      equals in class DoubleCollections.EmptyCollection

    • toString

      public String toString()
      Overrides:
      toString in class AbstractDoubleCollection