GNU Trove

gnu.trove.map
Interface TDoubleDoubleMap

All Known Implementing Classes:
TDoubleDoubleHashMap

public interface TDoubleDoubleMap

Interface for a primitive map of double keys and double values.


Method Summary
 double adjustOrPutValue(double key, double adjust_amount, double put_amount)
          Adjusts the primitive value mapped to the key if the key is present in the map.
 boolean adjustValue(double key, double amount)
          Adjusts the primitive value mapped to key.
 void clear()
          Empties the map.
 boolean containsKey(double key)
          Checks for the present of key in the keys of the map.
 boolean containsValue(double val)
          Checks for the presence of val in the values of the map.
 boolean forEachEntry(TDoubleDoubleProcedure procedure)
          Executes procedure for each key/value entry in the map.
 boolean forEachKey(TDoubleProcedure procedure)
          Executes procedure for each key in the map.
 boolean forEachValue(TDoubleProcedure procedure)
          Executes procedure for each value in the map.
 double get(double key)
          Retrieves the value for key
 double getNoEntryKey()
          Returns the value that will be returned from get(double) or put(double, double) if no entry exists for a given key.
 double getNoEntryValue()
          Returns the value that will be returned from get(double) or put(double, double) if no entry exists for a given key.
 boolean increment(double key)
          Increments the primitive value mapped to key by 1
 boolean isEmpty()
          Returns true if this map contains no key-value mappings.
 TDoubleDoubleIterator iterator()
           
 double[] keys()
          Returns the keys of the map as an array of double values.
 double[] keys(double[] array)
          Returns the keys of the map.
 TDoubleSet keySet()
          Returns the keys of the map as a TDoubleSet
 double put(double key, double value)
          Inserts a key/value pair into the map.
 void putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Double> map)
          Put all the entries from the given Map into this map.
 void putAll(TDoubleDoubleMap map)
          Put all the entries from the given map into this map.
 double putIfAbsent(double key, double value)
          Inserts a key/value pair into the map if the specified key is not already associated with a value.
 double remove(double key)
          Deletes a key/value pair from the map.
 boolean retainEntries(TDoubleDoubleProcedure procedure)
          Retains only those entries in the map for which the procedure returns a true value.
 int size()
          Returns an int value that is the number of elements in the map.
 void transformValues(TDoubleFunction function)
          Transform the values in this map using function.
 TDoubleCollection valueCollection()
          Returns the values of the map as a TDoubleCollection
 double[] values()
          Returns the values of the map as an array of #e# values.
 double[] values(double[] array)
          Returns the values of the map using an existing array.
 

Method Detail

getNoEntryKey

double getNoEntryKey()
Returns the value that will be returned from get(double) or put(double, double) if no entry exists for a given key. The default value is generally zero, but can be changed during construction of the collection.

Returns:
the value that represents a null key in this collection.

getNoEntryValue

double getNoEntryValue()
Returns the value that will be returned from get(double) or put(double, double) if no entry exists for a given key. The default value is generally zero, but can be changed during construction of the collection.

Returns:
the value that represents a null value in this collection.

put

double put(double key,
           double value)
Inserts a key/value pair into the map.

Parameters:
key - an double value
value - an double value
Returns:
the previous value associated with key, or the "no entry" value if none was found (see getNoEntryValue()).

putIfAbsent

double putIfAbsent(double key,
                   double value)
Inserts a key/value pair into the map if the specified key is not already associated with a value.

Parameters:
key - an double value
value - an double value
Returns:
the previous value associated with key, or the "no entry" value if none was found (see getNoEntryValue()).

putAll

void putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Double> map)
Put all the entries from the given Map into this map.

Parameters:
map - The Map from which entries will be obtained to put into this map.

putAll

void putAll(TDoubleDoubleMap map)
Put all the entries from the given map into this map.

Parameters:
map - The map from which entries will be obtained to put into this map.

get

double get(double key)
Retrieves the value for key

Parameters:
key - an double value
Returns:
the previous value associated with key, or the "no entry" value if none was found (see getNoEntryValue()).

clear

void clear()
Empties the map.


isEmpty

boolean isEmpty()
Returns true if this map contains no key-value mappings.

Returns:
true if this map contains no key-value mappings

remove

double remove(double key)
Deletes a key/value pair from the map.

Parameters:
key - an double value
Returns:
the previous value associated with key, or the "no entry" value if none was found (see getNoEntryValue()).

size

int size()
Returns an int value that is the number of elements in the map.

Returns:
an int value that is the number of elements in the map.

keySet

TDoubleSet keySet()
Returns the keys of the map as a TDoubleSet

Returns:
the keys of the map as a TDoubleSet

keys

double[] keys()
Returns the keys of the map as an array of double values.

Returns:
the keys of the map as an array of double values.

keys

double[] keys(double[] array)
Returns the keys of the map.

Parameters:
array - the array into which the elements of the list are to be stored, if it is big enough; otherwise, a new array of the same type is allocated for this purpose.
Returns:
the keys of the map as an array.

valueCollection

TDoubleCollection valueCollection()
Returns the values of the map as a TDoubleCollection

Returns:
the values of the map as a TDoubleCollection

values

double[] values()
Returns the values of the map as an array of #e# values.

Returns:
the values of the map as an array of #e# values.

values

double[] values(double[] array)
Returns the values of the map using an existing array.

Parameters:
array - the array into which the elements of the list are to be stored, if it is big enough; otherwise, a new array of the same type is allocated for this purpose.
Returns:
the values of the map as an array of #e# values.

containsValue

boolean containsValue(double val)
Checks for the presence of val in the values of the map.

Parameters:
val - an double value
Returns:
a boolean value

containsKey

boolean containsKey(double key)
Checks for the present of key in the keys of the map.

Parameters:
key - an double value
Returns:
a boolean value

iterator

TDoubleDoubleIterator iterator()
Returns:
a TDoubleDoubleIterator with access to this map's keys and values

forEachKey

boolean forEachKey(TDoubleProcedure procedure)
Executes procedure for each key in the map.

Parameters:
procedure - a TDoubleProcedure value
Returns:
false if the loop over the keys terminated because the procedure returned false for some key.

forEachValue

boolean forEachValue(TDoubleProcedure procedure)
Executes procedure for each value in the map.

Parameters:
procedure - a T#F#Procedure value
Returns:
false if the loop over the values terminated because the procedure returned false for some value.

forEachEntry

boolean forEachEntry(TDoubleDoubleProcedure procedure)
Executes procedure for each key/value entry in the map.

Parameters:
procedure - a TODoubleDoubleProcedure value
Returns:
false if the loop over the entries terminated because the procedure returned false for some entry.

transformValues

void transformValues(TDoubleFunction function)
Transform the values in this map using function.

Parameters:
function - a TDoubleFunction value

retainEntries

boolean retainEntries(TDoubleDoubleProcedure procedure)
Retains only those entries in the map for which the procedure returns a true value.

Parameters:
procedure - determines which entries to keep
Returns:
true if the map was modified.

increment

boolean increment(double key)
Increments the primitive value mapped to key by 1

Parameters:
key - the key of the value to increment
Returns:
true if a mapping was found and modified.

adjustValue

boolean adjustValue(double key,
                    double amount)
Adjusts the primitive value mapped to key.

Parameters:
key - the key of the value to increment
amount - the amount to adjust the value by.
Returns:
true if a mapping was found and modified.

adjustOrPutValue

double adjustOrPutValue(double key,
                        double adjust_amount,
                        double put_amount)
Adjusts the primitive value mapped to the key if the key is present in the map. Otherwise, the initial_value is put in the map.

Parameters:
key - the key of the value to increment
adjust_amount - the amount to adjust the value by
put_amount - the value put into the map if the key is not initial present
Returns:
the value present in the map after the adjustment or put operation

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