Serializable
public class OpenIntToDoubleHashMap extends Object implements Serializable
This class provides a dedicated map from integers to doubles with a
much smaller memory overhead than standard java.util.Map
.
This class is not synchronized. The specialized iterators returned by
iterator()
are fail-fast: they throw a
ConcurrentModificationException
when they detect the map has been
modified during iteration.
Modifier and Type | Class | Description |
---|---|---|
class |
OpenIntToDoubleHashMap.Iterator |
Iterator class for the map.
|
Modifier and Type | Field | Description |
---|---|---|
protected static byte |
FREE |
Status indicator for free table entries.
|
protected static byte |
FULL |
Status indicator for full table entries.
|
protected static byte |
REMOVED |
Status indicator for removed table entries.
|
Constructor | Description |
---|---|
OpenIntToDoubleHashMap() |
Build an empty map with default size and using NaN for missing entries.
|
OpenIntToDoubleHashMap(double missingEntries) |
Build an empty map with default size
|
OpenIntToDoubleHashMap(int expectedSize) |
Build an empty map with specified size and using NaN for missing entries.
|
OpenIntToDoubleHashMap(int expectedSize,
double missingEntries) |
Build an empty map with specified size.
|
OpenIntToDoubleHashMap(OpenIntToDoubleHashMap source) |
Copy constructor.
|
Modifier and Type | Method | Description |
---|---|---|
boolean |
containsKey(int key) |
Check if a value is associated with a key.
|
double |
get(int key) |
Get the stored value associated with the given key
|
OpenIntToDoubleHashMap.Iterator |
iterator() |
Get an iterator over map elements.
|
double |
put(int key,
double value) |
Put a value associated with a key in the map.
|
double |
remove(int key) |
Remove the value associated with a key.
|
int |
size() |
Get the number of elements stored in the map.
|
protected static final byte FREE
protected static final byte FULL
protected static final byte REMOVED
public OpenIntToDoubleHashMap()
public OpenIntToDoubleHashMap(double missingEntries)
missingEntries
- value to return when a missing entry is fetchedpublic OpenIntToDoubleHashMap(int expectedSize)
expectedSize
- expected number of elements in the mappublic OpenIntToDoubleHashMap(int expectedSize, double missingEntries)
expectedSize
- expected number of elements in the mapmissingEntries
- value to return when a missing entry is fetchedpublic OpenIntToDoubleHashMap(OpenIntToDoubleHashMap source)
source
- map to copypublic double get(int key)
key
- key associated with the datapublic boolean containsKey(int key)
key
- key to checkpublic OpenIntToDoubleHashMap.Iterator iterator()
The specialized iterators returned are fail-fast: they throw a
ConcurrentModificationException
when they detect the map
has been modified during iteration.
public int size()
public double remove(int key)
key
- key to which the value is associatedpublic double put(int key, double value)
key
- key to which value is associatedvalue
- value to put in the mapCopyright © 2016–2018 Hipparchus.org. All rights reserved.