public class Double2CharArrayMap extends AbstractDouble2CharMap implements Serializable, 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.
AbstractDouble2CharMap.BasicEntry, AbstractDouble2CharMap.BasicEntrySetDouble2CharMap.Entry, Double2CharMap.FastEntrySetdefRetValue| Constructor and Description |
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Double2CharArrayMap()
Creates a new empty array map.
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Double2CharArrayMap(double[] key,
char[] value)
Creates a new empty array map with given key and value backing arrays.
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Double2CharArrayMap(double[] 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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Double2CharArrayMap(Double2CharMap m)
Creates a new empty array map copying the entries of a given map.
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Double2CharArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Double2CharArrayMap(Map<? extends Double,? extends 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 |
|---|---|
void |
clear()
Removes all of the mappings from this map (optional operation).
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Double2CharArrayMap |
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(char v)
Returns
true if this map maps one or more keys to the specified value. |
Double2CharMap.FastEntrySet |
double2CharEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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char |
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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char |
put(double k,
char v)
Adds a pair to the map (optional operation).
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char |
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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CharCollection |
values()
Returns a type-specific-set view of the values of this map.
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equals, hashCode, putAll, toStringdefaultReturnValue, defaultReturnValuefinalize, getClass, notify, notifyAll, wait, wait, waitcompute, compute, computeIfAbsent, computeIfAbsent, computeIfAbsentNullable, computeIfAbsentPartial, computeIfPresent, computeIfPresent, containsKey, containsValue, defaultReturnValue, defaultReturnValue, entrySet, get, getOrDefault, getOrDefault, merge, merge, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replaceapplyAsIntforEach, replaceAllpublic Double2CharArrayMap(double[] 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 Double2CharArrayMap()
public Double2CharArrayMap(int capacity)
capacity - the initial capacity.public Double2CharArrayMap(Double2CharMap m)
m - a map.public Double2CharArrayMap(Map<? extends Double,? extends Character> m)
m - a map.public Double2CharArrayMap(double[] 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 Double2CharMap.FastEntrySet double2CharEntrySet()
Double2CharMapThis 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).
double2CharEntrySet in interface Double2CharMapMap.entrySet()public char get(double k)
Double2CharFunctionget in interface Double2CharFunctionk - the key.Function.get(Object)public int size()
Double2CharMapInteger.MAX_VALUE elements, returns Integer.MAX_VALUE.public void clear()
Double2CharMapclear in interface Double2CharMapclear in interface Map<Double,Character>Map.clear()public boolean containsKey(double k)
Double2CharMapcontainsKey in interface Double2CharFunctioncontainsKey in interface Double2CharMapcontainsKey in class AbstractDouble2CharMapk - the key.key.Map.containsKey(Object)public boolean containsValue(char v)
Double2CharMaptrue if this map maps one or more keys to the specified value.containsValue in interface Double2CharMapcontainsValue in class AbstractDouble2CharMapMap.containsValue(Object)public boolean isEmpty()
public char put(double k,
char v)
Double2CharFunctionput in interface Double2CharFunctionk - the key.v - the value.Function.put(Object,Object)public char remove(double k)
Double2CharFunctionremove in interface Double2CharFunctionk - the key.Function.remove(Object)public DoubleSet keySet()
AbstractDouble2CharMapThe 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 Double2CharMapkeySet in interface Map<Double,Character>keySet in class AbstractDouble2CharMapMap.keySet()public CharCollection values()
AbstractDouble2CharMapThe 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 Double2CharMapvalues in interface Map<Double,Character>values in class AbstractDouble2CharMapMap.values()public Double2CharArrayMap 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.
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