public class Long2CharArrayMap extends AbstractLong2CharMap 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.
AbstractLong2CharMap.BasicEntry
Long2CharMap.Entry, Long2CharMap.FastEntrySet
Constructor and Description |
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Long2CharArrayMap()
Creates a new empty array map.
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Long2CharArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Long2CharArrayMap(long[] key,
char[] value)
Creates a new empty array map with given key and value backing arrays.
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Long2CharArrayMap(long[] key,
char[] 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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Long2CharArrayMap(Long2CharMap m)
Creates a new empty array map copying the entries of a given map.
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Long2CharArrayMap(java.util.Map<? extends java.lang.Long,? extends java.lang.Character> 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 associations from this function (optional operation).
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Long2CharArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(long k)
Checks whether the given value is contained in
AbstractLong2CharMap.keySet() . |
boolean |
containsValue(char v)
Checks whether the given value is contained in
AbstractLong2CharMap.values() . |
char |
get(long k)
Returns the value to which the given key is mapped.
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boolean |
isEmpty() |
LongSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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Long2CharMap.FastEntrySet |
long2CharEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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char |
put(long k,
char v)
Adds a pair to the map.
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char |
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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CharCollection |
values()
Returns a type-specific-set view of the values of this map.
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containsValue, entrySet, equals, hashCode, putAll, toString
containsKey, defaultReturnValue, defaultReturnValue, get, put, remove
defaultReturnValue, defaultReturnValue
containsKey, get, put, remove
public Long2CharArrayMap(long[] key, char[] 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 Long2CharArrayMap()
public Long2CharArrayMap(int capacity)
capacity
- the initial capacity.public Long2CharArrayMap(Long2CharMap m)
m
- a map.public Long2CharArrayMap(java.util.Map<? extends java.lang.Long,? extends java.lang.Character> m)
m
- a map.public Long2CharArrayMap(long[] key, char[] 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 Long2CharMap.FastEntrySet long2CharEntrySet()
Long2CharMap
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Long2CharMap.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).
long2CharEntrySet
in interface Long2CharMap
Long2CharMap.entrySet()
public char get(long k)
Long2CharFunction
get
in interface Long2CharFunction
k
- the key.Function.get(Object)
public int size()
Function
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.
public void clear()
Function
clear
in interface Function<java.lang.Long,java.lang.Character>
clear
in interface java.util.Map<java.lang.Long,java.lang.Character>
clear
in class AbstractLong2CharFunction
Map.clear()
public boolean containsKey(long k)
AbstractLong2CharMap
AbstractLong2CharMap.keySet()
.containsKey
in interface Long2CharFunction
containsKey
in class AbstractLong2CharMap
Function.containsKey(Object)
public boolean containsValue(char v)
AbstractLong2CharMap
AbstractLong2CharMap.values()
.containsValue
in interface Long2CharMap
containsValue
in class AbstractLong2CharMap
Map.containsValue(Object)
public boolean isEmpty()
isEmpty
in interface java.util.Map<java.lang.Long,java.lang.Character>
isEmpty
in class AbstractLong2CharMap
public char put(long k, char v)
Long2CharFunction
put
in interface Long2CharFunction
put
in class AbstractLong2CharFunction
k
- the key.v
- the value.Function.put(Object,Object)
public char remove(long k)
Long2CharFunction
remove
in interface Long2CharFunction
remove
in class AbstractLong2CharFunction
k
- the key.Function.remove(Object)
public LongSet keySet()
AbstractLong2CharMap
The view is backed by the set returned by AbstractLong2CharMap.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 Long2CharMap
keySet
in interface java.util.Map<java.lang.Long,java.lang.Character>
keySet
in class AbstractLong2CharMap
Map.keySet()
public CharCollection values()
AbstractLong2CharMap
The view is backed by the set returned by AbstractLong2CharMap.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 Long2CharMap
values
in interface java.util.Map<java.lang.Long,java.lang.Character>
values
in class AbstractLong2CharMap
Map.values()
public Long2CharArrayMap 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