Double2DoubleLinkedOpenHashMap (fastutil 6.4.1 API)

java.lang.Object
- it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleFunction
- - it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleMap
  - - it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleSortedMap
    - - it.unimi.dsi.fastutil.doubles.Double2DoubleLinkedOpenHashMap

All Implemented Interfaces:

Double2DoubleFunction, Double2DoubleMap, Double2DoubleSortedMap, Function<Double,Double>, Hash, Serializable, Cloneable, Map<Double,Double>, SortedMap<Double,Double>
```
public class Double2DoubleLinkedOpenHashMap
extends AbstractDouble2DoubleSortedMap
implements Serializable, Cloneable, Hash
```
A type-specific linked hash map with with a fast, small-footprint implementation.
Instances of this class use a hash table to represent a map. The table is enlarged as needed by doubling its size when new entries are created, but it is never made smaller (even on a clear()). A family of trimming methods lets you control the size of the table; this is particularly useful if you reuse instances of this class.
Iterators generated by this map will enumerate pairs in the same order in which they have been added to the map (addition of pairs whose key is already present in the set does not change the iteration order). Note that this order has nothing in common with the natural order of the keys. The order is kept by means of a doubly linked list, represented via an array of longs parallel to the table.
This class implements the interface of a sorted map, so to allow easy access of the iteration order: for instance, you can get the first key in iteration order with AbstractDouble2DoubleSortedMap.firstKey() without having to create an iterator; however, this class partially violates the SortedMap contract because all submap methods throw an exception and comparator() returns always null.
Additional methods, such as getAndMoveToFirst(), make it easy to use instances of this class as a cache (e.g., with LRU policy).
The iterators provided by the views of this class using are type-specific list iterators, and can be started at any element which is a key of the map, or a NoSuchElementException exception will be thrown. If, however, the provided element is not the first or last key in the set, the first access to the list index will require linear time, as in the worst case the entire key set must be scanned in iteration order to retrieve the positional index of the starting key. If you use just the methods of a type-specific BidirectionalIterator, however, all operations will be performed in constant time.

See Also:
Hash, HashCommon, Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleSortedMap
  AbstractDouble2DoubleSortedMap.KeySetIterator, AbstractDouble2DoubleSortedMap.ValuesCollection, AbstractDouble2DoubleSortedMap.ValuesIterator
- Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleMap
  AbstractDouble2DoubleMap.BasicEntry
- Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.Hash
  Hash.Strategy<K>
- Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleSortedMap
  Double2DoubleSortedMap.FastSortedEntrySet
- Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleMap
  Double2DoubleMap.Entry, Double2DoubleMap.FastEntrySet

Field Summary

Fields
Modifier and Type	Field and Description
`protected Double2DoubleSortedMap.FastSortedEntrySet`	`entries` Cached set of entries.
`protected float`	`f` The acceptable load factor.
`protected int`	`first` The index of the first entry in iteration order.
`protected double[]`	`key` The array of keys.
`protected DoubleSortedSet`	`keys` Cached set of keys.
`protected int`	`last` The index of the last entry in iteration order.
`protected long[]`	`link` For each entry, the next and the previous entry in iteration order, stored as `((prev & 0xFFFFFFFFL) << 32) \| (next & 0xFFFFFFFFL)`.
`protected int`	`mask` The mask for wrapping a position counter.
`protected int`	`maxFill` Threshold after which we rehash.
`protected int`	`n` The current table size.
`static long`	`serialVersionUID`
`protected int`	`size` Number of entries in the set.
`protected boolean[]`	`used` The array telling whether a position is used.
`protected double[]`	`value` The array of values.
`protected DoubleCollection`	`values` Cached collection of values.

Fields inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleFunction
defRetValue

Fields inherited from interface it.unimi.dsi.fastutil.Hash
DEFAULT_GROWTH_FACTOR, DEFAULT_INITIAL_SIZE, DEFAULT_LOAD_FACTOR, FAST_LOAD_FACTOR, FREE, OCCUPIED, PRIMES, REMOVED, VERY_FAST_LOAD_FACTOR

Constructor Summary

Constructors
Constructor and Description
`Double2DoubleLinkedOpenHashMap()` Creates a new hash map with initial expected `Hash.DEFAULT_INITIAL_SIZE` entries and `Hash.DEFAULT_LOAD_FACTOR` as load factor.
`Double2DoubleLinkedOpenHashMap(double[] k, double[] v)` Creates a new hash map with `Hash.DEFAULT_LOAD_FACTOR` as load factor using the elements of two parallel arrays.
`Double2DoubleLinkedOpenHashMap(double[] k, double[] v, float f)` Creates a new hash map using the elements of two parallel arrays.
`Double2DoubleLinkedOpenHashMap(Double2DoubleMap m)` Creates a new hash map with `Hash.DEFAULT_LOAD_FACTOR` as load factor copying a given type-specific one.
`Double2DoubleLinkedOpenHashMap(Double2DoubleMap m, float f)` Creates a new hash map copying a given type-specific one.
`Double2DoubleLinkedOpenHashMap(int expected)` Creates a new hash map with `Hash.DEFAULT_LOAD_FACTOR` as load factor.
`Double2DoubleLinkedOpenHashMap(int expected, float f)` Creates a new hash map.
`Double2DoubleLinkedOpenHashMap(Map<? extends Double,? extends Double> m)` Creates a new hash map with `Hash.DEFAULT_LOAD_FACTOR` as load factor copying a given one.
`Double2DoubleLinkedOpenHashMap(Map<? extends Double,? extends Double> m, float f)` Creates a new hash map copying a given one.

Method Summary

Methods
Modifier and Type	Method and Description
`double`	`add(double k, double incr)` Adds an increment to value currently associated with a key.
`void`	`clear()` Removes all associations from this function (optional operation).
`Double2DoubleLinkedOpenHashMap`	`clone()` Returns a deep copy of this map.
`DoubleComparator`	`comparator()` Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
`boolean`	`containsKey(double k)` Checks whether the given value is contained in `AbstractDouble2DoubleMap.keySet()`.
`boolean`	`containsValue(double v)` Checks whether the given value is contained in `AbstractDouble2DoubleMap.values()`.
`Double2DoubleSortedMap.FastSortedEntrySet`	`double2DoubleEntrySet()` Returns a type-specific sorted-set view of the mappings contained in this map.
`double`	`firstDoubleKey()` Returns the first key of this map in iteration order.
`protected void`	`fixPointers(int i)` Modifies the `link` vector so that the given entry is removed.
`protected void`	`fixPointers(int s, int d)` Modifies the `link` vector for a shift from s to d.
`double`	`get(double k)` Returns the value to which the given key is mapped.
`Double`	`get(Double ok)`
`double`	`getAndMoveToFirst(double k)` Returns the value to which the given key is mapped; if the key is present, it is moved to the first position of the iteration order.
`double`	`getAndMoveToLast(double k)` Returns the value to which the given key is mapped; if the key is present, it is moved to the last position of the iteration order.
`int`	`growthFactor()` Deprecated. Since `fastutil` 6.1.0, hash tables are doubled when they are too full.
`void`	`growthFactor(int growthFactor)` Deprecated. Since `fastutil` 6.1.0, hash tables are doubled when they are too full.
`int`	`hashCode()` Returns a hash code for this map.
`Double2DoubleSortedMap`	`headMap(double to)` Returns a view of the portion of this sorted map whose keys are strictly less than `toKey`.
`boolean`	`isEmpty()`
`DoubleSortedSet`	`keySet()` Returns a type-specific-sorted-set view of the keys of this map.
`double`	`lastDoubleKey()` Returns the last key of this map in iteration order.
`double`	`put(double k, double v)` Adds a pair to the map.
`Double`	`put(Double ok, Double ov)` Delegates to the corresponding type-specific method, taking care of returning `null` on a missing key.
`double`	`putAndMoveToFirst(double k, double v)` Adds a pair to the map; if the key is already present, it is moved to the first position of the iteration order.
`double`	`putAndMoveToLast(double k, double v)` Adds a pair to the map; if the key is already present, it is moved to the last position of the iteration order.
`boolean`	`rehash()` Deprecated. A no-op.
`protected void`	`rehash(int newN)` Resizes the map.
`double`	`remove(double k)` Removes the mapping with the given key.
`Double`	`remove(Object ok)` Delegates to the corresponding type-specific method, taking care of returning `null` on a missing key.
`double`	`removeFirstDouble()` Removes the mapping associated with the first key in iteration order.
`double`	`removeLastDouble()` Removes the mapping associated with the last key in iteration order.
`protected int`	`shiftKeys(int pos)` Shifts left entries with the specified hash code, starting at the specified position, and empties the resulting free entry.
`int`	`size()` Returns the intended number of keys in this function, or -1 if no such number exists.
`Double2DoubleSortedMap`	`subMap(double from, double to)` Returns a view of the portion of this sorted map whose keys range from `fromKey`, inclusive, to `toKey`, exclusive.
`Double2DoubleSortedMap`	`tailMap(double from)` Returns a view of the portion of this sorted map whose keys are greater than or equal to `fromKey`.
`boolean`	`trim()` Rehashes the map, making the table as small as possible.
`boolean`	`trim(int n)` Rehashes this map if the table is too large.
`DoubleCollection`	`values()` Returns a type-specific collection view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleSortedMap
entrySet, firstKey, headMap, lastKey, subMap, tailMap

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleMap
containsValue, equals, putAll, toString

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleFunction
containsKey, defaultReturnValue, defaultReturnValue, get

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

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleFunction
defaultReturnValue, defaultReturnValue

Methods inherited from interface it.unimi.dsi.fastutil.Function
containsKey, get

Methods inherited from interface java.util.Map
containsKey, containsValue, equals, get, putAll

- Field Detail
  - serialVersionUID
```
public static final long serialVersionUID
```
    See Also:
    Constant Field Values
  - key
```
protected transient double[] key
```
    The array of keys.
  - value
```
protected transient double[] value
```
    The array of values.
  - used
```
protected transient boolean[] used
```
    The array telling whether a position is used.
  - f
```
protected final float f
```
    The acceptable load factor.
  - n
```
protected transient int n
```
    The current table size.
  - maxFill
```
protected transient int maxFill
```
    Threshold after which we rehash. It must be the table size times f.
  - mask
```
protected transient int mask
```
    The mask for wrapping a position counter.
  - size
```
protected int size
```
    Number of entries in the set.
  - entries
```
protected transient volatile Double2DoubleSortedMap.FastSortedEntrySet entries
```
    Cached set of entries.
  - keys
```
protected transient volatile DoubleSortedSet keys
```
    Cached set of keys.
  - values
```
protected transient volatile DoubleCollection values
```
    Cached collection of values.
  - first
```
protected transient int first
```
    The index of the first entry in iteration order. It is valid iff size is nonzero; otherwise, it contains -1.
  - last
```
protected transient int last
```
    The index of the last entry in iteration order. It is valid iff size is nonzero; otherwise, it contains -1.
  - link
```
protected transient long[] link
```
    For each entry, the next and the previous entry in iteration order, stored as ((prev & 0xFFFFFFFFL) << 32) | (next & 0xFFFFFFFFL). The first entry contains predecessor -1, and the last entry contains successor -1.
- Constructor Detail
  - Double2DoubleLinkedOpenHashMap
```
public Double2DoubleLinkedOpenHashMap(int expected,
                              float f)
```
    Creates a new hash map.
    The actual table size will be the least power of two greater than expected/f.
    
    Parameters:
    expected - the expected number of elements in the hash set.
    f - the load factor.
  - Double2DoubleLinkedOpenHashMap
```
public Double2DoubleLinkedOpenHashMap(int expected)
```
    Creates a new hash map with Hash.DEFAULT_LOAD_FACTOR as load factor.
    
    Parameters:
    expected - the expected number of elements in the hash map.
  - Double2DoubleLinkedOpenHashMap
```
public Double2DoubleLinkedOpenHashMap()
```
    Creates a new hash map with initial expected Hash.DEFAULT_INITIAL_SIZE entries and Hash.DEFAULT_LOAD_FACTOR as load factor.
  - Double2DoubleLinkedOpenHashMap
```
public Double2DoubleLinkedOpenHashMap(Map<? extends Double,? extends Double> m,
                              float f)
```
    Creates a new hash map copying a given one.
    
    Parameters:
    m - a Map to be copied into the new hash map.
    f - the load factor.
  - Double2DoubleLinkedOpenHashMap
```
public Double2DoubleLinkedOpenHashMap(Map<? extends Double,? extends Double> m)
```
    Creates a new hash map with Hash.DEFAULT_LOAD_FACTOR as load factor copying a given one.
    
    Parameters:
    m - a Map to be copied into the new hash map.
  - Double2DoubleLinkedOpenHashMap
```
public Double2DoubleLinkedOpenHashMap(Double2DoubleMap m,
                              float f)
```
    Creates a new hash map copying a given type-specific one.
    
    Parameters:
    m - a type-specific map to be copied into the new hash map.
    f - the load factor.
  - Double2DoubleLinkedOpenHashMap
```
public Double2DoubleLinkedOpenHashMap(Double2DoubleMap m)
```
    Creates a new hash map with Hash.DEFAULT_LOAD_FACTOR as load factor copying a given type-specific one.
    
    Parameters:
    m - a type-specific map to be copied into the new hash map.
  - Double2DoubleLinkedOpenHashMap
```
public Double2DoubleLinkedOpenHashMap(double[] k,
                              double[] v,
                              float f)
```
    Creates a new hash map using the elements of two parallel arrays.
    
    Parameters:
    k - the array of keys of the new hash map.
    v - the array of corresponding values in the new hash map.
    f - the load factor.
    
    Throws:
    
    IllegalArgumentException - if k and v have different lengths.
  - Double2DoubleLinkedOpenHashMap
```
public Double2DoubleLinkedOpenHashMap(double[] k,
                              double[] v)
```
    Creates a new hash map with Hash.DEFAULT_LOAD_FACTOR as load factor using the elements of two parallel arrays.
    
    Parameters:
    k - the array of keys of the new hash map.
    v - the array of corresponding values in the new hash map.
    
    Throws:
    
    IllegalArgumentException - if k and v have different lengths.
- Method Detail
  - put
```
public double put(double k,
         double v)
```
    Description copied from interface: Double2DoubleFunction
    
    Adds a pair to the map.
    
    Specified by:
    
    put in interface Double2DoubleFunction
    
    Overrides:
    
    put in class AbstractDouble2DoubleFunction
    
    Parameters:
    k - the key.
    v - the value.
    
    Returns:
    the old value, or the default return value if no value was present for the given key.
    See Also:
    Function.put(Object,Object)
  - put
```
public Double put(Double ok,
         Double ov)
```
    Description copied from class: AbstractDouble2DoubleFunction
    
    Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
    This method must check whether the provided key is in the map using containsKey(). Thus, it probes the map twice. Implementors of subclasses should override it with a more efficient method.
    
    Specified by:
    
    put in interface Function<Double,Double>
    
    Specified by:
    
    put in interface Map<Double,Double>
    
    Overrides:
    
    put in class AbstractDouble2DoubleFunction
    
    Parameters:
    ok - the key.
    ov - the value.
    
    Returns:
    the old value, or null if no value was present for the given key.
    See Also:
    Map.put(Object,Object)
  - add
```
public double add(double k,
         double incr)
```
    Adds an increment to value currently associated with a key.
    Note that this method respects the default return value semantics: when called with a key that does not currently appears in the map, the key will be associated with the default return value plus the given increment.
    
    Parameters:
    k - the key.
    incr - the increment.
    
    Returns:
    the old value, or the default return value if no value was present for the given key.
  - shiftKeys
```
protected final int shiftKeys(int pos)
```
    Shifts left entries with the specified hash code, starting at the specified position, and empties the resulting free entry.
    
    Parameters:
    pos - a starting position.
    
    Returns:
    the position cleared by the shifting process.
  - remove
```
public double remove(double k)
```
    Description copied from interface: Double2DoubleFunction
    
    Removes the mapping with the given key.
    
    Specified by:
    
    remove in interface Double2DoubleFunction
    
    Overrides:
    
    remove in class AbstractDouble2DoubleFunction
    
    Returns:
    the old value, or the default return value if no value was present for the given key.
    See Also:
    Function.remove(Object)
  - remove
```
public Double remove(Object ok)
```
    Description copied from class: AbstractDouble2DoubleFunction
    
    Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
    This method must check whether the provided key is in the map using containsKey(). Thus, it probes the map twice. Implementors of subclasses should override it with a more efficient method.
    
    Specified by:
    
    remove in interface Function<Double,Double>
    
    Specified by:
    
    remove in interface Map<Double,Double>
    
    Overrides:
    
    remove in class AbstractDouble2DoubleFunction
    
    Returns:
    the old value, or null if no value was present for the given key.
    See Also:
    Map.remove(Object)
  - removeFirstDouble
```
public double removeFirstDouble()
```
    Removes the mapping associated with the first key in iteration order.
    
    Returns:
    the value previously associated with the first key in iteration order.
    
    Throws:
    
    NoSuchElementException - is this map is empty.
  - removeLastDouble
```
public double removeLastDouble()
```
    Removes the mapping associated with the last key in iteration order.
    
    Returns:
    the value previously associated with the last key in iteration order.
    
    Throws:
    
    NoSuchElementException - is this map is empty.
  - getAndMoveToFirst
```
public double getAndMoveToFirst(double k)
```
    Returns the value to which the given key is mapped; if the key is present, it is moved to the first position of the iteration order.
    
    Parameters:
    k - the key.
    
    Returns:
    the corresponding value, or the default return value if no value was present for the given key.
  - getAndMoveToLast
```
public double getAndMoveToLast(double k)
```
    Returns the value to which the given key is mapped; if the key is present, it is moved to the last position of the iteration order.
    
    Parameters:
    k - the key.
    
    Returns:
    the corresponding value, or the default return value if no value was present for the given key.
  - putAndMoveToFirst
```
public double putAndMoveToFirst(double k,
                       double v)
```
    Adds a pair to the map; if the key is already present, it is moved to the first position of the iteration order.
    
    Parameters:
    k - the key.
    v - the value.
    
    Returns:
    the old value, or the default return value if no value was present for the given key.
  - putAndMoveToLast
```
public double putAndMoveToLast(double k,
                      double v)
```
    Adds a pair to the map; if the key is already present, it is moved to the last position of the iteration order.
    
    Parameters:
    k - the key.
    v - the value.
    
    Returns:
    the old value, or the default return value if no value was present for the given key.
  - get
```
public Double get(Double ok)
```
  - get
```
public double get(double k)
```
    Description copied from interface: Double2DoubleFunction
    
    Returns the value to which the given key is mapped.
    
    Specified by:
    
    get in interface Double2DoubleFunction
    
    Parameters:
    k - the key.
    
    Returns:
    the corresponding value, or the default return value if no value was present for the given key.
    See Also:
    Function.get(Object)
  - containsKey
```
public boolean containsKey(double k)
```
    Description copied from class: AbstractDouble2DoubleMap
    
    Checks whether the given value is contained in AbstractDouble2DoubleMap.keySet().
    
    Specified by:
    
    containsKey in interface Double2DoubleFunction
    
    Overrides:
    
    containsKey in class AbstractDouble2DoubleMap
    
    See Also:
    Function.containsKey(Object)
  - containsValue
```
public boolean containsValue(double v)
```
    Description copied from class: AbstractDouble2DoubleMap
    
    Checks whether the given value is contained in AbstractDouble2DoubleMap.values().
    
    Specified by:
    
    containsValue in interface Double2DoubleMap
    
    Overrides:
    
    containsValue in class AbstractDouble2DoubleMap
    
    See Also:
    Map.containsValue(Object)
  - clear
```
public void clear()
```
    Description copied from interface: Function
    
    Removes all associations from this function (optional operation).
    
    Specified by:
    
    clear in interface Function<Double,Double>
    
    Specified by:
    
    clear in interface Map<Double,Double>
    
    Overrides:
    
    clear in class AbstractDouble2DoubleFunction
    
    See Also:
    Map.clear()
  - size
```
public int size()
```
    Description copied from interface: Function
    
    Returns the intended number of keys in this function, or -1 if no such number exists.
    Most function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.
    
    Specified by:
    
    size in interface Function<Double,Double>
    
    Specified by:
    
    size in interface Map<Double,Double>
    
    Returns:
    the intended number of keys in this function, or -1 if that number is not available.
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface Map<Double,Double>
    
    Overrides:
    
    isEmpty in class AbstractDouble2DoubleMap
  - growthFactor
```
@Deprecated
public void growthFactor(int growthFactor)
```
    Deprecated. Since fastutil 6.1.0, hash tables are doubled when they are too full.
    
    A no-op for backward compatibility.
    
    Parameters:
    growthFactor - unused.
  - growthFactor
```
@Deprecated
public int growthFactor()
```
    Deprecated. Since fastutil 6.1.0, hash tables are doubled when they are too full.
    
    Gets the growth factor (2).
    
    Returns:
    the growth factor of this set, which is fixed (2).
    See Also:
    growthFactor(int)
  - fixPointers
```
protected void fixPointers(int i)
```
    Modifies the link vector so that the given entry is removed.
    If the given entry is the first or the last one, this method will complete in constant time; otherwise, it will have to search for the given entry.
    
    Parameters:
    i - the index of an entry.
  - fixPointers
```
protected void fixPointers(int s,
               int d)
```
    Modifies the link vector for a shift from s to d.
    If the given entry is the first or the last one, this method will complete in constant time; otherwise, it will have to search for the given entry.
    
    Parameters:
    s - the source position.
    d - the destination position.
  - firstDoubleKey
```
public double firstDoubleKey()
```
    Returns the first key of this map in iteration order.
    
    Specified by:
    
    firstDoubleKey in interface Double2DoubleSortedMap
    
    Returns:
    the first key in iteration order.
    See Also:
    SortedMap.firstKey()
  - lastDoubleKey
```
public double lastDoubleKey()
```
    Returns the last key of this map in iteration order.
    
    Specified by:
    
    lastDoubleKey in interface Double2DoubleSortedMap
    
    Returns:
    the last key in iteration order.
    See Also:
    SortedMap.lastKey()
  - comparator
```
public DoubleComparator comparator()
```
    Description copied from interface: Double2DoubleSortedMap
    
    Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
    Note that this specification strengthens the one given in SortedMap.comparator().
    
    Specified by:
    
    comparator in interface Double2DoubleSortedMap
    
    Specified by:
    
    comparator in interface SortedMap<Double,Double>
    
    See Also:
    SortedMap.comparator()
  - tailMap
```
public Double2DoubleSortedMap tailMap(double from)
```
    Description copied from interface: Double2DoubleSortedMap
    
    Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.
    
    Specified by:
    
    tailMap in interface Double2DoubleSortedMap
    
    See Also:
    SortedMap.tailMap(Object)
  - headMap
```
public Double2DoubleSortedMap headMap(double to)
```
    Description copied from interface: Double2DoubleSortedMap
    
    Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
    
    Specified by:
    
    headMap in interface Double2DoubleSortedMap
    
    See Also:
    SortedMap.headMap(Object)
  - subMap
```
public Double2DoubleSortedMap subMap(double from,
                            double to)
```
    Description copied from interface: Double2DoubleSortedMap
    
    Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.
    
    Specified by:
    
    subMap in interface Double2DoubleSortedMap
    
    See Also:
    SortedMap.subMap(Object,Object)
  - double2DoubleEntrySet
```
public Double2DoubleSortedMap.FastSortedEntrySet double2DoubleEntrySet()
```
    Description copied from interface: Double2DoubleSortedMap
    
    Returns a type-specific sorted-set view of the mappings contained in this map. Note that this specification strengthens the one given in the corresponding type-specific unsorted map.
    
    Specified by:
    
    double2DoubleEntrySet in interface Double2DoubleMap
    
    Specified by:
    
    double2DoubleEntrySet in interface Double2DoubleSortedMap
    
    Returns:
    a type-specific sorted-set view of the mappings contained in this map.
    See Also:
    Double2DoubleSortedMap.entrySet()
  - keySet
```
public DoubleSortedSet keySet()
```
    Description copied from class: AbstractDouble2DoubleSortedMap
    
    Returns a type-specific-sorted-set view of the keys of this map.
    The view is backed by the sorted set returned by AbstractDouble2DoubleSortedMap.entrySet(). Note that no attempt is made at caching the result of this method, as this would require adding some attributes that lightweight implementations would not need. Subclasses may easily override this policy by calling this method and caching the result, but implementors are encouraged to write more efficient ad-hoc implementations.
    
    Specified by:
    
    keySet in interface Double2DoubleMap
    
    Specified by:
    
    keySet in interface Double2DoubleSortedMap
    
    Specified by:
    
    keySet in interface Map<Double,Double>
    
    Specified by:
    
    keySet in interface SortedMap<Double,Double>
    
    Overrides:
    
    keySet in class AbstractDouble2DoubleSortedMap
    
    Returns:
    a sorted set view of the keys of this map; it may be safely cast to a type-specific interface.
    See Also:
    Map.keySet()
  - values
```
public DoubleCollection values()
```
    Description copied from class: AbstractDouble2DoubleSortedMap
    
    Returns a type-specific collection view of the values contained in this map.
    The view is backed by the sorted set returned by AbstractDouble2DoubleSortedMap.entrySet(). Note that no attempt is made at caching the result of this method, as this would require adding some attributes that lightweight implementations would not need. Subclasses may easily override this policy by calling this method and caching the result, but implementors are encouraged to write more efficient ad-hoc implementations.
    
    Specified by:
    
    values in interface Double2DoubleMap
    
    Specified by:
    
    values in interface Double2DoubleSortedMap
    
    Specified by:
    
    values in interface Map<Double,Double>
    
    Specified by:
    
    values in interface SortedMap<Double,Double>
    
    Overrides:
    
    values in class AbstractDouble2DoubleSortedMap
    
    Returns:
    a type-specific collection view of the values contained in this map.
    See Also:
    Map.values()
  - rehash
```
@Deprecated
public boolean rehash()
```
    Deprecated. A no-op.
    
    A no-op for backward compatibility. The kind of tables implemented by this class never need rehashing.
    If you need to reduce the table size to fit exactly this set, use trim().
    
    Returns:
    true.
    See Also:
    trim()
  - trim
```
public boolean trim()
```
    Rehashes the map, making the table as small as possible.
    This method rehashes the table to the smallest size satisfying the load factor. It can be used when the set will not be changed anymore, so to optimize access speed and size.
    If the table size is already the minimum possible, this method does nothing.
    
    Returns:
    true if there was enough memory to trim the map.
    See Also:
    trim(int)
  - trim
```
public boolean trim(int n)
```
    Rehashes this map if the table is too large.
    Let N be the smallest table size that can hold max(n,size()) entries, still satisfying the load factor. If the current table size is smaller than or equal to N, this method does nothing. Otherwise, it rehashes this map in a table of size N.
    This method is useful when reusing maps. Clearing a map leaves the table size untouched. If you are reusing a map many times, you can call this method with a typical size to avoid keeping around a very large table just because of a few large transient maps.
    
    Parameters:
    n - the threshold for the trimming.
    
    Returns:
    true if there was enough memory to trim the map.
    See Also:
    trim()
  - rehash
```
protected void rehash(int newN)
```
    Resizes the map.
    This method implements the basic rehashing strategy, and may be overriden by subclasses implementing different rehashing strategies (e.g., disk-based rehashing). However, you should not override this method unless you understand the internal workings of this class.
    
    Parameters:
    newN - the new size
  - clone
```
public Double2DoubleLinkedOpenHashMap clone()
```
    Returns a deep copy of this map.
    This method performs a deep copy of this hash map; the data stored in the map, however, is not cloned. Note that this makes a difference only for object keys.
    
    Overrides:
    
    clone in class Object
    
    Returns:
    a deep copy of this map.
  - hashCode
```
public int hashCode()
```
    Returns a hash code for this map. This method overrides the generic method provided by the superclass. Since equals() is not overriden, it is important that the value returned by this method is the same value as the one returned by the overriden method.
    
    Specified by:
    
    hashCode in interface Map<Double,Double>
    
    Overrides:
    
    hashCode in class AbstractDouble2DoubleMap
    
    Returns:
    a hash code for this map.

Class Double2DoubleLinkedOpenHashMap

Nested Class Summary

Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleSortedMap

Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleMap

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.Hash

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleSortedMap

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleMap

Field Summary

Fields inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleFunction

Fields inherited from interface it.unimi.dsi.fastutil.Hash

Constructor Summary

Method Summary

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleSortedMap

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleMap

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleFunction

Methods inherited from class java.lang.Object

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleFunction

Methods inherited from interface it.unimi.dsi.fastutil.Function

Methods inherited from interface java.util.Map

Field Detail

serialVersionUID

key

value

used

f

n

maxFill

mask

size

entries

keys

values

first

last

link

Constructor Detail

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Method Detail

put

put

add

shiftKeys

remove

remove

removeFirstDouble

removeLastDouble

getAndMoveToFirst

getAndMoveToLast

putAndMoveToFirst

putAndMoveToLast

get

get

containsKey

containsValue

clear

size

isEmpty

growthFactor

growthFactor

fixPointers

fixPointers

firstDoubleKey

lastDoubleKey

comparator

tailMap

headMap

subMap

double2DoubleEntrySet

keySet

values

rehash

trim