XDoubleLinkedList (Talon 3.14.19 API)

java.lang.Object
- com.neeve.lang.XDoubleCollectionBase
- - com.neeve.lang.XDoubleLinkedList

All Implemented Interfaces:

XDoubleCollection, XDoubleList
```
public class XDoubleLinkedList
extends XDoubleCollectionBase
implements XDoubleList
```
This class represents a linked list with real-time behavior; smooth capacity increase and no memory allocation as long as the list size does not exceed its initial capacity.

All of the operations perform as could be expected for a doubly-linked list (insertion/deletion at the end of the list are nonetheless the fastest). Operations that index into the list will traverse the list from the begining or the end whichever is closer to the specified index. Random access operations can be significantly accelerated by splitting the list into smaller ones.

XDoubleLinkedList (as for any XCollection sub-class) supports fast iterations without using iterators.[code] XLinkedList list = new XLinkedList(); for (XLinkedList.Node n = list.head(), end = list.tail(); (n = n.getNext()) != end;) { String value = n.getValue(); // No typecast necessary. }[/code]

Alternatively The list can be iterated over using XDoubleCollectionBase.reusableIterator(). Utilization of these iterators does not introduce garbage because they are created once. However, these iterators may not be used concurrently by multiple threads as they are single instance by nature.
Custom list implementations may override the newNode() method in order to return their own XDoubleLinkedList.DoubleNode implementation (with additional fields for example).

This class was based on collections code from http://javolution.org, but modified for use outside of realtime jvms.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`XDoubleLinkedList.DoubleNode` This class represents a `XDoubleLinkedList` node; it allows for direct iteration over the list `values`.

Constructor Summary

Constructors
Constructor and Description
`XDoubleLinkedList()` Creates a list of small initial capacity.
`XDoubleLinkedList(int capacity)` Creates a list of specified initial capacity; unless the list size reaches the specified capacity, operations on this list will not allocate memory (no lazy object creation).
`XDoubleLinkedList(XDoubleCollection values)` Creates a list containing the specified values, in the order they are returned by the collection's iterator.

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`add(double value)` Appends the specified value to the end of this list (equivalent to `addLast(double)`).
`void`	`add(int index, double value)` Inserts the specified value at the specified position in this list.
`boolean`	`addAll(int index, XDoubleCollection values)` Inserts all of the values in the specified collection into this list at the specified position.
`void`	`addBefore(XDoubleLinkedList.DoubleNode next, double value)` Inserts the specified value before the specified Node.
`void`	`addFirst(double value)` Inserts the specified value at the beginning of this list.
`void`	`addLast(double value)` Appends the specified value to the end of this list (fast).
`void`	`clear()` Removes all of the values from this collection (optional operation).
`boolean`	`contains(double value)` Indicates if this collection contains the specified value.
`void`	`delete(XCollection.Record record)` Deletes the specified record from this collection.
`double`	`get(int index)` Returns the value at the specified position in this list.
`double`	`getFirst()` Returns the first value of this list.
`double`	`getLast()` Returns the last value of this list.
`XDoubleLinkedList.DoubleNode`	`head()` Returns the head record of this collection; it is the record such as `head().getNext()` holds the first collection value.
`int`	`indexOf(double value)` Returns the index in this list of the first occurrence of the specified value, or -1 if this list does not contain this value.
`XDoubleIterator`	`iterator()` Returns a simple iterator over the elements in this list
`int`	`lastIndexOf(double value)` Returns the index in this list of the last occurrence of the specified value, or -1 if this list does not contain this value.
`XDoubleListIterator`	`listIterator()` Returns a list iterator over the elements in this list.
`XDoubleListIterator`	`listIterator(int index)` Returns a list iterator from the specified position The specified index indicates the first value that would be returned by an initial call to the `next` method.
`static XDoubleLinkedList`	`newInstance()` Returns a new list instance.
`double`	`remove(int index)` Removes the value at the specified position in this list.
`double`	`removeFirst()` Removes and returns the first value of this list.
`double`	`removeLast()` Removes and returns the last value of this list (fast).
`void`	`reset()`
`double`	`set(int index, double value)` Replaces the value at the specified position in this list with the specified value.
`int`	`size()` Returns the number of values in this collection.
`XDoubleList`	`subList(int fromIndex, int toIndex)` Returns a view of the portion of this list between the specified indexes If the specified indexes are equal, the returned list is empty.
`XDoubleLinkedList.DoubleNode`	`tail()` Returns the tail record of this collection; it is the record such as `tail().getPrevious()` holds the last collection value.
`XDoubleList`	`unmodifiable()` Returns the unmodifiable view associated to this collection.
`double`	`valueOf(XCollection.Record record)` Returns the collection value for the specified record.

Methods inherited from class com.neeve.lang.XDoubleCollectionBase
addAll, containsAll, equals, hashCode, isEmpty, remove, removeAll, retainAll, reusableIterator, shared, supportsIteratorModifications, toArray, toArray, toString

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.neeve.lang.XDoubleList
addAll, containsAll, equals, hashCode, isEmpty, remove, removeAll, retainAll, toArray, toArray

Methods inherited from interface com.neeve.lang.XDoubleCollection
reusableIterator, shared, supportsIteratorModifications

- Constructor Detail
  - XDoubleLinkedList
```
public XDoubleLinkedList()
```
    Creates a list of small initial capacity.
  - XDoubleLinkedList
```
public XDoubleLinkedList(int capacity)
```
    Creates a list of specified initial capacity; unless the list size reaches the specified capacity, operations on this list will not allocate memory (no lazy object creation).
    
    Parameters:
    capacity - the initial capacity.
  - XDoubleLinkedList
```
public XDoubleLinkedList(XDoubleCollection values)
```
    Creates a list containing the specified values, in the order they are returned by the collection's iterator.
    
    Parameters:
    values - the values to be placed into this list.
- Method Detail
  - newInstance
```
public static XDoubleLinkedList newInstance()
```
    Returns a new list instance.
    
    Returns:
    a new, preallocated or recycled list instance.
  - add
```
public final boolean add(double value)
```
    Appends the specified value to the end of this list (equivalent to addLast(double)).
    
    Specified by:
    
    add in interface XDoubleCollection
    
    Specified by:
    
    add in interface XDoubleList
    
    Overrides:
    
    add in class XDoubleCollectionBase
    
    Parameters:
    value - the value to be appended to this list.
    
    Returns:
    true (as per the general contract of the Collection.add method).
  - get
```
public final double get(int index)
```
    Returns the value at the specified position in this list.
    
    Specified by:
    
    get in interface XDoubleList
    
    Parameters:
    index - the index of value to return.
    
    Returns:
    the value at the specified position in this list.
    
    Throws:
    
    IndexOutOfBoundsException - if (index < 0) || (index >= size())
  - set
```
public final double set(int index,
         double value)
```
    Replaces the value at the specified position in this list with the specified value.
    
    Specified by:
    
    set in interface XDoubleList
    
    Parameters:
    index - the index of value to replace.
    value - the value to be stored at the specified position.
    
    Returns:
    the value previously at the specified position.
    
    Throws:
    
    IndexOutOfBoundsException - if (index < 0) || (index >= size())
  - add
```
public final void add(int index,
       double value)
```
    Inserts the specified value at the specified position in this list. Shifts the value currently at that position (if any) and any subsequent values to the right (adds one to their indices).
    
    Specified by:
    
    add in interface XDoubleList
    
    Parameters:
    index - the index at which the specified value is to be inserted.
    value - the value to be inserted.
    
    Throws:
    
    IndexOutOfBoundsException - if (index < 0) || (index > size())
  - addAll
```
public final boolean addAll(int index,
             XDoubleCollection values)
```
    Inserts all of the values in the specified collection into this list at the specified position. Shifts the value currently at that position (if any) and any subsequent values to the right (increases their indices).
    
    Specified by:
    
    addAll in interface XDoubleList
    
    Parameters:
    index - the index at which to insert first value from the specified collection.
    values - the values to be inserted into this list.
    
    Returns:
    true if this list changed as a result of the call; false otherwise.
    
    Throws:
    
    IndexOutOfBoundsException - if (index < 0) || (index > size())
  - remove
```
public final double remove(int index)
```
    Removes the value at the specified position in this list. Shifts any subsequent values to the left (subtracts one from their indices). Returns the value that was removed from the list.
    
    Specified by:
    
    remove in interface XDoubleList
    
    Parameters:
    index - the index of the value to removed.
    
    Returns:
    the value previously at the specified position.
    
    Throws:
    
    IndexOutOfBoundsException - if (index < 0) || (index >= size())
  - indexOf
```
public final int indexOf(double value)
```
    Returns the index in this list of the first occurrence of the specified value, or -1 if this list does not contain this value.
    
    Specified by:
    
    indexOf in interface XDoubleList
    
    Parameters:
    value - the value to search for.
    
    Returns:
    the index in this list of the first occurrence of the specified value, or -1 if this list does not contain this value.
  - lastIndexOf
```
public final int lastIndexOf(double value)
```
    Returns the index in this list of the last occurrence of the specified value, or -1 if this list does not contain this value.
    
    Specified by:
    
    lastIndexOf in interface XDoubleList
    
    Parameters:
    value - the value to search for.
    
    Returns:
    the index in this list of the last occurrence of the specified value, or -1 if this list does not contain this value.
  - iterator
```
public XDoubleIterator iterator()
```
    Returns a simple iterator over the elements in this list
    
    Specified by:
    
    iterator in interface XDoubleCollection
    
    Specified by:
    
    iterator in interface XDoubleList
    
    Overrides:
    
    iterator in class XDoubleCollectionBase
    
    Returns:
    an iterator over this list values.
  - listIterator
```
public XDoubleListIterator listIterator()
```
    Returns a list iterator over the elements in this list.
    
    Specified by:
    
    listIterator in interface XDoubleList
    
    Returns:
    an iterator over this list values.
  - listIterator
```
public XDoubleListIterator listIterator(int index)
```
    Returns a list iterator from the specified position The specified index indicates the first value that would be returned by an initial call to the next method. An initial call to the previous method would return the value with the specified index minus one.
    
    Specified by:
    
    listIterator in interface XDoubleList
    
    Parameters:
    index - index of first value to be returned from the list iterator (by a call to the next method).
    
    Returns:
    a list iterator over the values in this list starting at the specified position in this list.
    
    Throws:
    
    IndexOutOfBoundsException - if the index is out of range [code](index < 0 || index > size())[/code].
  - subList
```
public final XDoubleList subList(int fromIndex,
                  int toIndex)
```
    Returns a view of the portion of this list between the specified indexes If the specified indexes are equal, the returned list is empty. The returned list is backed by this list, so non-structural changes in the returned list are reflected in this list, and vice-versa. This method eliminates the need for explicit range operations (of the sort that commonly exist for arrays). Any operation that expects a list can be used as a range operation by passing a subList view instead of a whole list. For example, the following idiom removes a range of values from a list: list.subList(from, to).clear(); Similar idioms may be constructed for indexOf and lastIndexOf, and all of the algorithms in the Collections class can be applied to a subList. The semantics of the list returned by this method become undefined if the backing list (i.e., this list) is structurally modified in any way other than via the returned list (structural modifications are those that change the size of this list, or otherwise perturb it in such a fashion that iterations in progress may yield incorrect results).
    
    Specified by:
    
    subList in interface XDoubleList
    
    Parameters:
    fromIndex - low endpoint (inclusive) of the subList.
    toIndex - high endpoint (exclusive) of the subList.
    
    Returns:
    a view of the specified range within this list.
    
    Throws:
    
    IndexOutOfBoundsException - if [code](fromIndex < 0 || toIndex > size || fromIndex < toIndex)[/code]
  - getFirst
```
public final double getFirst()
```
    Returns the first value of this list.
    
    Returns:
    this list's first value.
    
    Throws:
    
    NoSuchElementException - if this list is empty.
  - getLast
```
public final double getLast()
```
    Returns the last value of this list.
    
    Returns:
    this list's last value.
    
    Throws:
    
    NoSuchElementException - if this list is empty.
  - addFirst
```
public final void addFirst(double value)
```
    Inserts the specified value at the beginning of this list.
    
    Parameters:
    value - the value to be inserted.
  - addLast
```
public void addLast(double value)
```
    Appends the specified value to the end of this list (fast).
    
    Parameters:
    value - the value to be inserted.
  - removeFirst
```
public final double removeFirst()
```
    Removes and returns the first value of this list.
    
    Returns:
    this list's first value before this call.
    
    Throws:
    
    NoSuchElementException - if this list is empty.
  - removeLast
```
public final double removeLast()
```
    Removes and returns the last value of this list (fast).
    
    Returns:
    this list's last value before this call.
    
    Throws:
    
    NoSuchElementException - if this list is empty.
  - addBefore
```
public final void addBefore(XDoubleLinkedList.DoubleNode next,
             double value)
```
    Inserts the specified value before the specified Node.
    
    Parameters:
    next - the Node before which this value is inserted.
    value - the value to be inserted.
  - head
```
public final XDoubleLinkedList.DoubleNode head()
```
    Description copied from class: XDoubleCollectionBase
    
    Returns the head record of this collection; it is the record such as head().getNext() holds the first collection value.
    
    Specified by:
    
    head in interface XDoubleCollection
    
    Specified by:
    
    head in class XDoubleCollectionBase
    
    Returns:
    the head record.
  - tail
```
public final XDoubleLinkedList.DoubleNode tail()
```
    Description copied from class: XDoubleCollectionBase
    
    Returns the tail record of this collection; it is the record such as tail().getPrevious() holds the last collection value.
    
    Specified by:
    
    tail in interface XDoubleCollection
    
    Specified by:
    
    tail in class XDoubleCollectionBase
    
    Returns:
    the tail record.
  - valueOf
```
public final double valueOf(XCollection.Record record)
```
    Description copied from class: XDoubleCollectionBase
    
    Returns the collection value for the specified record.
    
    Specified by:
    
    valueOf in interface XDoubleCollection
    
    Specified by:
    
    valueOf in class XDoubleCollectionBase
    
    Parameters:
    record - the record whose current value is returned.
    
    Returns:
    the current value.
  - delete
```
public final void delete(XCollection.Record record)
```
    Description copied from class: XDoubleCollectionBase
    
    Deletes the specified record from this collection.
    Implementation must ensure that removing a record from the collection does not affect in any way the records preceding the record being removed (it might affect the next records though, e.g. in a list collection, the indices of the subsequent records will change).
    
    Specified by:
    
    delete in interface XDoubleCollection
    
    Specified by:
    
    delete in class XDoubleCollectionBase
    
    Parameters:
    record - the record to be removed.
  - contains
```
public final boolean contains(double value)
```
    Description copied from class: XDoubleCollectionBase
    
    Indicates if this collection contains the specified value.
    
    Specified by:
    
    contains in interface XDoubleCollection
    
    Specified by:
    
    contains in interface XDoubleList
    
    Overrides:
    
    contains in class XDoubleCollectionBase
    
    Parameters:
    value - the value whose presence in this collection is to be tested.
    
    Returns:
    true if this collection contains the specified value;false otherwise.
  - size
```
public final int size()
```
    Description copied from class: XDoubleCollectionBase
    
    Returns the number of values in this collection.
    
    Specified by:
    
    size in interface XDoubleCollection
    
    Specified by:
    
    size in interface XDoubleList
    
    Specified by:
    
    size in class XDoubleCollectionBase
    
    Returns:
    the number of values.
  - clear
```
public final void clear()
```
    Description copied from class: XDoubleCollectionBase
    
    Removes all of the values from this collection (optional operation).
    
    Specified by:
    
    clear in interface XDoubleCollection
    
    Specified by:
    
    clear in interface XDoubleList
    
    Overrides:
    
    clear in class XDoubleCollectionBase
  - unmodifiable
```
public XDoubleList unmodifiable()
```
    Description copied from class: XDoubleCollectionBase
    
    Returns the unmodifiable view associated to this collection. Attempts to modify the returned collection result in an UnsupportedOperationException being thrown.
    
    Specified by:
    
    unmodifiable in interface XDoubleCollection
    
    Overrides:
    
    unmodifiable in class XDoubleCollectionBase
    
    Returns:
    the unmodifiable view over this collection.
  - reset
```
public void reset()
```

Class XDoubleLinkedList

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class com.neeve.lang.XDoubleCollectionBase

Methods inherited from class java.lang.Object

Methods inherited from interface com.neeve.lang.XDoubleList

Methods inherited from interface com.neeve.lang.XDoubleCollection

Constructor Detail

XDoubleLinkedList

XDoubleLinkedList

XDoubleLinkedList

Method Detail

newInstance

add

get

set

add

addAll

remove

indexOf

lastIndexOf

iterator

listIterator

listIterator

subList

getFirst

getLast

addFirst

addLast

removeFirst

removeLast

addBefore

head

tail

valueOf

delete

contains

size

clear

unmodifiable

reset