Double2DoubleLinkedOpenHashMap (fastutil 8.2.0)

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<java.lang.Double,java.lang.Double>, Hash, java.io.Serializable, java.lang.Cloneable, java.util.function.DoubleUnaryOperator, java.util.function.Function<java.lang.Double,java.lang.Double>, java.util.Map<java.lang.Double,java.lang.Double>, java.util.SortedMap<java.lang.Double,java.lang.Double>
```
public class Double2DoubleLinkedOpenHashMap
extends AbstractDouble2DoubleSortedMap
implements java.io.Serializable, java.lang.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 filled up to a specified load factor, and then doubled in size to accommodate new entries. If the table is emptied below one fourth of the load factor, it is halved in size; however, the table is never reduced to a size smaller than that at creation time: this approach makes it possible to create maps with a large capacity in which insertions and deletions do not cause immediately rehashing. Moreover, halving is not performed when deleting entries from an iterator, as it would interfere with the iteration process.
Note that clear() does not modify the hash table size. Rather, 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 map 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 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 map, 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.AbstractDouble2DoubleMap
  AbstractDouble2DoubleMap.BasicEntry, AbstractDouble2DoubleMap.BasicEntrySet
- Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleMap
  Double2DoubleMap.Entry, Double2DoubleMap.FastEntrySet
- Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleSortedMap
  Double2DoubleSortedMap.FastSortedEntrySet
- Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.Hash
  Hash.Strategy<K>

Field Summary
- 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	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(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(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(java.util.Map<? extends java.lang.Double,? extends java.lang.Double> m)`	Creates a new hash map with `Hash.DEFAULT_LOAD_FACTOR` as load factor copying a given one.
`Double2DoubleLinkedOpenHashMap(java.util.Map<? extends java.lang.Double,? extends java.lang.Double> m, float f)`	Creates a new hash map copying a given one.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`double`	`addTo(double k, double incr)`	Adds an increment to value currently associated with a key.
`void`	`clear()`	Removes all of the mappings from this map (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.
`double`	`compute(double k, java.util.function.BiFunction<? super java.lang.Double,? super java.lang.Double,? extends java.lang.Double> remappingFunction)`	Attempts to compute a mapping for the specified key and its current mapped value (or `null` if there is no current mapping).
`double`	`computeIfAbsent(double k, java.util.function.DoubleUnaryOperator mappingFunction)`	If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map.
`double`	`computeIfAbsentNullable(double k, java.util.function.DoubleFunction<? extends java.lang.Double> mappingFunction)`	If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map unless it is `null`.
`double`	`computeIfPresent(double k, java.util.function.BiFunction<? super java.lang.Double,? super java.lang.Double,? extends java.lang.Double> remappingFunction)`	If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value.
`boolean`	`containsKey(double k)`	Returns true if this function contains a mapping for the specified key.
`boolean`	`containsValue(double v)`	Returns `true` if this map maps one or more keys to the specified value.
`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.
`double`	`get(double k)`	Returns the value to which the given key is mapped.
`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.
`double`	`getOrDefault(double k, double defaultValue)`	Returns the value to which the specified key is mapped, or the `defaultValue` if this map contains no mapping for the key.
`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-set view of the keys of this map.
`double`	`lastDoubleKey()`	Returns the last key of this map in iteration order.
`double`	`merge(double k, double v, java.util.function.BiFunction<? super java.lang.Double,? super java.lang.Double,? extends java.lang.Double> remappingFunction)`	If the specified key is not already associated with a value, associates it with the given `value`.
`double`	`put(double k, double v)`	Adds a pair to the map (optional operation).
`void`	`putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Double> m)`
`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.
`double`	`putIfAbsent(double k, double v)`	If the specified key is not already associated with a value, associates it with the given value and returns the default return value, else returns the current value.
`double`	`remove(double k)`	Removes the mapping with the given key (optional operation).
`boolean`	`remove(double k, double v)`	Removes the entry for the specified key only if it is currently mapped to the specified value.
`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.
`double`	`replace(double k, double v)`	Replaces the entry for the specified key only if it is currently mapped to some value.
`boolean`	`replace(double k, double oldValue, double v)`	Replaces the entry for the specified key only if currently mapped to the specified value.
`int`	`size()`	Returns the number of key/value mappings in this map.
`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-set view of the values of this map.

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

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

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

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleMap
compute, computeIfAbsent, computeIfAbsentPartial, computeIfPresent, containsKey, containsValue, defaultReturnValue, defaultReturnValue, get, getOrDefault, merge, put, putIfAbsent, remove, remove, replace, replace

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleSortedMap
entrySet, firstKey, headMap, lastKey, subMap, tailMap

Methods inherited from interface java.util.function.DoubleUnaryOperator
andThen, compose

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

Methods inherited from interface java.util.function.Function
andThen, compose

Methods inherited from interface java.util.Map
equals, forEach, replaceAll

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

- 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 map.
    
    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(java.util.Map<? extends java.lang.Double,? extends java.lang.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(java.util.Map<? extends java.lang.Double,? extends java.lang.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:
    
    java.lang.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:
    
    java.lang.IllegalArgumentException - if k and v have different lengths.
- Method Detail
  - putAll
```
public void putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Double> m)
```
    Description copied from class: AbstractDouble2DoubleMap
    
    Specified by:
    
    putAll in interface java.util.Map<java.lang.Double,java.lang.Double>
    
    Overrides:
    
    putAll in class AbstractDouble2DoubleMap
  - put
```
public double put(double k,
                  double v)
```
    Description copied from interface: Double2DoubleFunction
    
    Adds a pair to the map (optional operation).
    
    Specified by:
    
    put in interface Double2DoubleFunction
    
    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)
  - addTo
```
public double addTo(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.
  - remove
```
public double remove(double k)
```
    Description copied from interface: Double2DoubleFunction
    
    Removes the mapping with the given key (optional operation).
    
    Specified by:
    
    remove in interface Double2DoubleFunction
    
    Parameters:
    
    k - the key.
    
    Returns:
    
    the old value, or the default return value if no value was present for the given key.
    
    See Also:
    
    Function.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:
    
    java.util.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:
    
    java.util.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 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 interface: Double2DoubleMap
    
    Returns true if this function contains a mapping for the specified key.
    
    Specified by:
    
    containsKey in interface Double2DoubleFunction
    
    Specified by:
    
    containsKey in interface Double2DoubleMap
    
    Overrides:
    
    containsKey in class AbstractDouble2DoubleMap
    
    Parameters:
    
    k - the key.
    
    Returns:
    
    true if this function associates a value to key.
    
    See Also:
    
    Map.containsKey(Object)
  - containsValue
```
public boolean containsValue(double v)
```
    Description copied from interface: Double2DoubleMap
    
    Returns true if this map maps one or more keys to the specified value.
    
    Specified by:
    
    containsValue in interface Double2DoubleMap
    
    Overrides:
    
    containsValue in class AbstractDouble2DoubleMap
    
    See Also:
    
    Map.containsValue(Object)
  - getOrDefault
```
public double getOrDefault(double k,
                           double defaultValue)
```
    Returns the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.
    
    Specified by:
    
    getOrDefault in interface Double2DoubleMap
    
    Parameters:
    
    k - the key.
    
    defaultValue - the default mapping of the key.
    
    Returns:
    
    the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.
    
    See Also:
    
    Map.getOrDefault(Object, Object)
  - putIfAbsent
```
public double putIfAbsent(double k,
                          double v)
```
    If the specified key is not already associated with a value, associates it with the given value and returns the default return value, else returns the current value.
    
    Specified by:
    
    putIfAbsent in interface Double2DoubleMap
    
    Parameters:
    
    k - key with which the specified value is to be associated.
    
    v - value to be associated with the specified key.
    
    Returns:
    
    the previous value associated with the specified key, or the default return value if there was no mapping for the key.
    
    See Also:
    
    Map.putIfAbsent(Object, Object)
  - remove
```
public boolean remove(double k,
                      double v)
```
    Removes the entry for the specified key only if it is currently mapped to the specified value.
    
    Specified by:
    
    remove in interface Double2DoubleMap
    
    Parameters:
    
    k - key with which the specified value is associated.
    
    v - value expected to be associated with the specified key.
    
    Returns:
    
    true if the value was removed.
    
    See Also:
    
    Map.remove(Object, Object)
  - replace
```
public boolean replace(double k,
                       double oldValue,
                       double v)
```
    Replaces the entry for the specified key only if currently mapped to the specified value.
    
    Specified by:
    
    replace in interface Double2DoubleMap
    
    Parameters:
    
    k - key with which the specified value is associated.
    
    oldValue - value expected to be associated with the specified key.
    
    v - value to be associated with the specified key.
    
    Returns:
    
    true if the value was replaced.
    
    See Also:
    
    Map.replace(Object, Object, Object)
  - replace
```
public double replace(double k,
                      double v)
```
    Replaces the entry for the specified key only if it is currently mapped to some value.
    
    Specified by:
    
    replace in interface Double2DoubleMap
    
    Parameters:
    
    k - key with which the specified value is associated.
    
    v - value to be associated with the specified key.
    
    Returns:
    
    the previous value associated with the specified key, or the default return value if there was no mapping for the key.
    
    See Also:
    
    Map.replace(Object, Object)
  - computeIfAbsent
```
public double computeIfAbsent(double k,
                              java.util.function.DoubleUnaryOperator mappingFunction)
```
    If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map.
    Note that contrarily to the default computeIfAbsent(), it is not possible to not add a value for a given key, since the mappingFunction cannot return null. If such a behavior is needed, please use the corresponding nullable version.
    
    Specified by:
    
    computeIfAbsent in interface Double2DoubleMap
    
    Parameters:
    
    k - key with which the specified value is to be associated.
    
    mappingFunction - the function to compute a value.
    
    Returns:
    
    the current (existing or computed) value associated with the specified key.
    
    See Also:
    
    Map.computeIfAbsent(Object, java.util.function.Function)
  - computeIfAbsentNullable
```
public double computeIfAbsentNullable(double k,
                                      java.util.function.DoubleFunction<? extends java.lang.Double> mappingFunction)
```
    If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map unless it is null.
    Note that this version of computeIfAbsent() should be used only if you plan to return null in the mapping function.
    
    Specified by:
    
    computeIfAbsentNullable in interface Double2DoubleMap
    
    Parameters:
    
    k - key with which the specified value is to be associated.
    
    mappingFunction - the function to compute a value.
    
    Returns:
    
    the current (existing or computed) value associated with the specified key, or the default return value if the computed value is null.
    
    See Also:
    
    Map.computeIfAbsent(Object, java.util.function.Function)
  - computeIfPresent
```
public double computeIfPresent(double k,
                               java.util.function.BiFunction<? super java.lang.Double,? super java.lang.Double,? extends java.lang.Double> remappingFunction)
```
    If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value.
    
    Specified by:
    
    computeIfPresent in interface Double2DoubleMap
    
    Parameters:
    
    k - key with which the specified value is to be associated.
    
    remappingFunction - the function to compute a value.
    
    Returns:
    
    the new value associated with the specified key, or the default return value if none.
    
    See Also:
    
    Map.computeIfPresent(Object, java.util.function.BiFunction)
  - compute
```
public double compute(double k,
                      java.util.function.BiFunction<? super java.lang.Double,? super java.lang.Double,? extends java.lang.Double> remappingFunction)
```
    Attempts to compute a mapping for the specified key and its current mapped value (or null if there is no current mapping).
    If the function returns null, the mapping is removed (or remains absent if initially absent). If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.
    
    Specified by:
    
    compute in interface Double2DoubleMap
    
    Parameters:
    
    k - key with which the specified value is to be associated.
    
    remappingFunction - the function to compute a value.
    
    Returns:
    
    the new value associated with the specified key, or the default return value if none.
    
    See Also:
    
    Map.compute(Object, java.util.function.BiFunction)
  - merge
```
public double merge(double k,
                    double v,
                    java.util.function.BiFunction<? super java.lang.Double,? super java.lang.Double,? extends java.lang.Double> remappingFunction)
```
    If the specified key is not already associated with a value, associates it with the given value. Otherwise, replaces the associated value with the results of the given remapping function, or removes if the result is null.
    
    Specified by:
    
    merge in interface Double2DoubleMap
    
    Parameters:
    
    k - key with which the resulting value is to be associated.
    
    v - the value to be merged with the existing value associated with the key or, if no existing value is associated with the key, to be associated with the key.
    
    remappingFunction - the function to recompute a value if present.
    
    Returns:
    
    the new value associated with the specified key, or the default return value if no value is associated with the key.
    
    See Also:
    
    Map.merge(Object, Object, java.util.function.BiFunction)
  - clear
```
public void clear()
```
    Description copied from interface: Double2DoubleMap
    
    Removes all of the mappings from this map (optional operation). The map will be empty after this call returns.
    
    Specified by:
    
    clear in interface Double2DoubleMap
    
    Specified by:
    
    clear in interface Function<java.lang.Double,java.lang.Double>
    
    Specified by:
    
    clear in interface java.util.Map<java.lang.Double,java.lang.Double>
    
    See Also:
    
    Map.clear()
  - size
```
public int size()
```
    Description copied from interface: Double2DoubleMap
    
    Returns the number of key/value mappings in this map. If the map contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.
    
    Specified by:
    
    size in interface Double2DoubleMap
    
    Specified by:
    
    size in interface Function<java.lang.Double,java.lang.Double>
    
    Specified by:
    
    size in interface java.util.Map<java.lang.Double,java.lang.Double>
    
    Returns:
    
    the number of key-value mappings in this map.
    
    See Also:
    
    Size64
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface java.util.Map<java.lang.Double,java.lang.Double>
    
    Overrides:
    
    isEmpty in class AbstractDouble2DoubleMap
  - 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()
  - tailMap
```
public Double2DoubleSortedMap tailMap(double from)
```
    Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.
    Note that this specification strengthens the one given in SortedMap.tailMap(Object).
    This implementation just throws an UnsupportedOperationException.
    
    Specified by:
    
    tailMap in interface Double2DoubleSortedMap
    
    See Also:
    
    SortedMap.tailMap(Object)
  - headMap
```
public Double2DoubleSortedMap headMap(double to)
```
    Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
    Note that this specification strengthens the one given in SortedMap.headMap(Object).
    This implementation just throws an UnsupportedOperationException.
    
    Specified by:
    
    headMap in interface Double2DoubleSortedMap
    
    See Also:
    
    SortedMap.headMap(Object)
  - subMap
```
public 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.
    Note that this specification strengthens the one given in SortedMap.subMap(Object,Object).
    This implementation just throws an UnsupportedOperationException.
    
    Specified by:
    
    subMap in interface Double2DoubleSortedMap
    
    See Also:
    
    SortedMap.subMap(Object,Object)
  - comparator
```
public DoubleComparator comparator()
```
    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().
    This implementation just returns null.
    
    Specified by:
    
    comparator in interface Double2DoubleSortedMap
    
    Specified by:
    
    comparator in interface java.util.SortedMap<java.lang.Double,java.lang.Double>
    
    See Also:
    
    SortedMap.comparator()
  - 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-set view of the keys of this map.
    The view is backed by the set returned by Map.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.
    The view is backed by the sorted set returned by Map.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 java.util.Map<java.lang.Double,java.lang.Double>
    
    Specified by:
    
    keySet in interface java.util.SortedMap<java.lang.Double,java.lang.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-set view of the values of this map.
    The view is backed by the set returned by Map.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.
    The view is backed by the sorted set returned by Map.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 java.util.Map<java.lang.Double,java.lang.Double>
    
    Specified by:
    
    values in interface java.util.SortedMap<java.lang.Double,java.lang.Double>
    
    Overrides:
    
    values in class AbstractDouble2DoubleSortedMap
    
    Returns:
    
    a type-specific collection view of the values contained in this map.
    
    See Also:
    
    Map.values()
  - 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()
  - 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.
    
    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 java.util.Map<java.lang.Double,java.lang.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.AbstractDouble2DoubleMap

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

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

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

Field Summary

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

Constructor Summary

Method Summary

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

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

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

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleMap

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleSortedMap

Methods inherited from interface java.util.function.DoubleUnaryOperator

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

Methods inherited from interface java.util.function.Function

Methods inherited from interface java.util.Map

Methods inherited from class java.lang.Object

Constructor Detail

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Double2DoubleLinkedOpenHashMap

Method Detail

putAll

put

addTo

remove

removeFirstDouble

removeLastDouble

getAndMoveToFirst

getAndMoveToLast

putAndMoveToFirst

putAndMoveToLast

get

containsKey

containsValue

getOrDefault

putIfAbsent

remove

replace

replace

computeIfAbsent

computeIfAbsentNullable

computeIfPresent

compute

merge

clear

size

isEmpty

firstDoubleKey

lastDoubleKey

tailMap

headMap

subMap

comparator

double2DoubleEntrySet

keySet

values

trim

trim

clone

hashCode