public class Long2FloatArrayMap extends AbstractLong2FloatMap 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.
AbstractLong2FloatMap.BasicEntryLong2FloatMap.Entry, Long2FloatMap.FastEntrySet| Constructor and Description |
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Long2FloatArrayMap()
Creates a new empty array map.
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Long2FloatArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Long2FloatArrayMap(long[] key,
float[] value)
Creates a new empty array map with given key and value backing arrays.
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Long2FloatArrayMap(long[] key,
float[] 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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Long2FloatArrayMap(Long2FloatMap m)
Creates a new empty array map copying the entries of a given map.
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Long2FloatArrayMap(java.util.Map<? extends java.lang.Long,? extends java.lang.Float> m)
Creates a new empty array map copying the entries of a given map.
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| Modifier and Type | Method and Description |
|---|---|
void |
clear()
Removes all associations from this function (optional operation).
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Long2FloatArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(long k)
Checks whether the given value is contained in
AbstractLong2FloatMap.keySet(). |
boolean |
containsValue(float v)
Checks whether the given value is contained in
AbstractLong2FloatMap.values(). |
float |
get(long k)
Returns the value to which the given key is mapped.
|
boolean |
isEmpty() |
LongSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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Long2FloatMap.FastEntrySet |
long2FloatEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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float |
put(long k,
float v)
Adds a pair to the map.
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float |
remove(long k)
Removes the mapping with the given key.
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int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
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FloatCollection |
values()
Returns a type-specific-set view of the values of this map.
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containsValue, entrySet, equals, hashCode, putAll, toStringcontainsKey, defaultReturnValue, defaultReturnValue, get, put, removedefaultReturnValue, defaultReturnValuecontainsKey, get, put, removepublic Long2FloatArrayMap(long[] key,
float[] 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 Long2FloatArrayMap()
public Long2FloatArrayMap(int capacity)
capacity - the initial capacity.public Long2FloatArrayMap(Long2FloatMap m)
m - a map.public Long2FloatArrayMap(java.util.Map<? extends java.lang.Long,? extends java.lang.Float> m)
m - a map.public Long2FloatArrayMap(long[] key,
float[] 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 Long2FloatMap.FastEntrySet long2FloatEntrySet()
Long2FloatMapThis method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Long2FloatMap.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).
long2FloatEntrySet in interface Long2FloatMapLong2FloatMap.entrySet()public float get(long k)
Long2FloatFunctionget in interface Long2FloatFunctionk - the key.Function.get(Object)public int size()
FunctionMost function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.
public void clear()
Functionclear in interface Function<java.lang.Long,java.lang.Float>clear in interface java.util.Map<java.lang.Long,java.lang.Float>clear in class AbstractLong2FloatFunctionMap.clear()public boolean containsKey(long k)
AbstractLong2FloatMapAbstractLong2FloatMap.keySet().containsKey in interface Long2FloatFunctioncontainsKey in class AbstractLong2FloatMapFunction.containsKey(Object)public boolean containsValue(float v)
AbstractLong2FloatMapAbstractLong2FloatMap.values().containsValue in interface Long2FloatMapcontainsValue in class AbstractLong2FloatMapMap.containsValue(Object)public boolean isEmpty()
isEmpty in interface java.util.Map<java.lang.Long,java.lang.Float>isEmpty in class AbstractLong2FloatMappublic float put(long k,
float v)
Long2FloatFunctionput in interface Long2FloatFunctionput in class AbstractLong2FloatFunctionk - the key.v - the value.Function.put(Object,Object)public float remove(long k)
Long2FloatFunctionremove in interface Long2FloatFunctionremove in class AbstractLong2FloatFunctionk - the key.Function.remove(Object)public LongSet keySet()
AbstractLong2FloatMapThe view is backed by the set returned by AbstractLong2FloatMap.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 Long2FloatMapkeySet in interface java.util.Map<java.lang.Long,java.lang.Float>keySet in class AbstractLong2FloatMapMap.keySet()public FloatCollection values()
AbstractLong2FloatMapThe view is backed by the set returned by AbstractLong2FloatMap.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 Long2FloatMapvalues in interface java.util.Map<java.lang.Long,java.lang.Float>values in class AbstractLong2FloatMapMap.values()public Long2FloatArrayMap 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