public class Double2LongArrayMap extends AbstractDouble2LongMap implements java.io.Serializable, java.lang.Cloneable
The main purpose of this implementation is that of wrapping cleanly the brute-force approach to the storage of a very small number of pairs: just put them into two parallel arrays and scan linearly to find an item.
AbstractDouble2LongMap.BasicEntry, AbstractDouble2LongMap.BasicEntrySet
Double2LongMap.Entry, Double2LongMap.FastEntrySet
Constructor and Description |
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Double2LongArrayMap()
Creates a new empty array map.
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Double2LongArrayMap(double[] key,
long[] value)
Creates a new empty array map with given key and value backing arrays.
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Double2LongArrayMap(double[] key,
long[] value,
int size)
Creates a new array map with given key and value backing arrays, using the given number of elements.
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Double2LongArrayMap(Double2LongMap m)
Creates a new empty array map copying the entries of a given map.
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Double2LongArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Double2LongArrayMap(java.util.Map<? extends java.lang.Double,? extends java.lang.Long> m)
Creates a new empty array map copying the entries of a given map.
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Modifier and Type | Method and Description |
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void |
clear()
Removes all of the mappings from this map (optional operation).
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Double2LongArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(double k)
Returns true if this function contains a mapping for the specified key.
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boolean |
containsValue(long v)
Returns
true if this map maps one or more keys to the specified value. |
Double2LongMap.FastEntrySet |
double2LongEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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long |
get(double k)
Returns the value to which the given key is mapped.
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boolean |
isEmpty() |
DoubleSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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long |
put(double k,
long v)
Adds a pair to the map (optional operation).
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long |
remove(double k)
Removes the mapping with the given key (optional operation).
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int |
size()
Returns the number of key/value mappings in this map.
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LongCollection |
values()
Returns a type-specific-set view of the values of this map.
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equals, hashCode, mergeLong, putAll, toString
defaultReturnValue, defaultReturnValue
compute, compute, computeIfAbsent, computeIfAbsent, computeIfAbsent, computeIfAbsentNullable, computeIfAbsentPartial, computeIfPresent, computeIfPresent, containsKey, containsValue, defaultReturnValue, defaultReturnValue, entrySet, forEach, get, getOrDefault, getOrDefault, merge, merge, mergeLong, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace
andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsLong, compose, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort
public Double2LongArrayMap(double[] key, long[] value)
It is responsibility of the caller that the elements of key
are distinct.
key
- the key array.value
- the value array (it must have the same length as key
).public Double2LongArrayMap()
public Double2LongArrayMap(int capacity)
capacity
- the initial capacity.public Double2LongArrayMap(Double2LongMap m)
m
- a map.public Double2LongArrayMap(java.util.Map<? extends java.lang.Double,? extends java.lang.Long> m)
m
- a map.public Double2LongArrayMap(double[] key, long[] value, int size)
It is responsibility of the caller that the first size
elements of key
are distinct.
key
- the key array.value
- the value array (it must have the same length as key
).size
- the number of valid elements in key
and value
.public Double2LongMap.FastEntrySet double2LongEntrySet()
Double2LongMap
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Map.entrySet()
so that it returns an ObjectSet
of type-specific entries (the latter makes it possible to
access keys and values with type-specific methods).
double2LongEntrySet
in interface Double2LongMap
Map.entrySet()
public long get(double k)
Double2LongFunction
get
in interface Double2LongFunction
k
- the key.Function.get(Object)
public int size()
Double2LongMap
Integer.MAX_VALUE
elements, returns Integer.MAX_VALUE
.size
in interface Double2LongMap
size
in interface java.util.Map<java.lang.Double,java.lang.Long>
Size64
public void clear()
Double2LongMap
clear
in interface Double2LongMap
clear
in interface java.util.Map<java.lang.Double,java.lang.Long>
Map.clear()
public boolean containsKey(double k)
AbstractDouble2LongMap
containsKey
in interface Double2LongFunction
containsKey
in interface Double2LongMap
containsKey
in class AbstractDouble2LongMap
k
- the key.key
.Map.containsKey(Object)
public boolean containsValue(long v)
AbstractDouble2LongMap
true
if this map maps one or more keys to the specified value.containsValue
in interface Double2LongMap
containsValue
in class AbstractDouble2LongMap
Map.containsValue(Object)
public boolean isEmpty()
isEmpty
in interface java.util.Map<java.lang.Double,java.lang.Long>
isEmpty
in class AbstractDouble2LongMap
public long put(double k, long v)
Double2LongFunction
put
in interface Double2LongFunction
k
- the key.v
- the value.Function.put(Object,Object)
public long remove(double k)
Double2LongFunction
remove
in interface Double2LongFunction
k
- the key.Function.remove(Object)
public DoubleSet keySet()
AbstractDouble2LongMap
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.
keySet
in interface Double2LongMap
keySet
in interface java.util.Map<java.lang.Double,java.lang.Long>
keySet
in class AbstractDouble2LongMap
Map.keySet()
public LongCollection values()
AbstractDouble2LongMap
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.
values
in interface Double2LongMap
values
in interface java.util.Map<java.lang.Double,java.lang.Long>
values
in class AbstractDouble2LongMap
Map.values()
public Double2LongArrayMap clone()
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.
clone
in class java.lang.Object