Package gnu.trove.map
Interface TDoubleDoubleMap
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- All Known Implementing Classes:
TDoubleDoubleHashMap
,TSynchronizedDoubleDoubleMap
,TUnmodifiableDoubleDoubleMap
public interface TDoubleDoubleMap
Interface for a primitive map of double keys and double values.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description 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 fromget(double)
orput(double, double)
if no entry exists for a given key.double
getNoEntryValue()
Returns the value that will be returned fromget(double)
orput(double, double)
if no entry exists for a given key.boolean
increment(double key)
Increments the primitive value mapped to key by 1boolean
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 TDoubleSetdouble
put(double key, double value)
Inserts a key/value pair into the map.void
putAll(TDoubleDoubleMap map)
Put all the entries from the given map into this 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.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 TDoubleCollectiondouble[]
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.
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Method Detail
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getNoEntryKey
double getNoEntryKey()
Returns the value that will be returned fromget(double)
orput(double, double)
if no entry exists for a given key. The default value is generally zero, but can be configured during construction of the collection.- Returns:
- the value that represents a null key in this collection.
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getNoEntryValue
double getNoEntryValue()
Returns the value that will be returned fromget(double)
orput(double, double)
if no entry exists for a given key. The default value is generally zero, but can be configured during construction of the collection.- Returns:
- the value that represents a null value in this collection.
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put
double put(double key, double value)
Inserts a key/value pair into the map.- Returns:
- the previous value associated with key, or the "no entry" value
if none was found (see
getNoEntryValue()
).
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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.- Returns:
- the previous value associated with key, or the "no entry" value
if none was found (see
getNoEntryValue()
).
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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.
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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.
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get
double get(double key)
Retrieves the value for key.- Returns:
- the previous value associated with key, or the "no entry" value
if none was found (see
getNoEntryValue()
).
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clear
void clear()
Empties the map.
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isEmpty
boolean isEmpty()
Returns true if this map contains no key-value mappings.- Returns:
- true if this map contains no key-value mappings
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remove
double remove(double key)
Deletes a key/value pair from the map.- Parameters:
key
- andouble
value- Returns:
- the previous value associated with key, or the "no entry" value
if none was found (see
getNoEntryValue()
).
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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.
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keySet
TDoubleSet keySet()
Returns the keys of the map as a TDoubleSet- Returns:
- the keys of the map as a TDoubleSet
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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.
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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.
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valueCollection
TDoubleCollection valueCollection()
Returns the values of the map as a TDoubleCollection- Returns:
- the values of the map as a TDoubleCollection
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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.
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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.
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containsValue
boolean containsValue(double val)
Checks for the presence of val in the values of the map.
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containsKey
boolean containsKey(double key)
Checks for the present of key in the keys of the map.
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iterator
TDoubleDoubleIterator iterator()
- Returns:
- a TDoubleDoubleIterator with access to this map's keys and values
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forEachKey
boolean forEachKey(TDoubleProcedure procedure)
Executes procedure for each key in the map.- Parameters:
procedure
- aTDoubleProcedure
value- Returns:
- false if the loop over the keys terminated because the procedure returned false for some key.
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forEachValue
boolean forEachValue(TDoubleProcedure procedure)
Executes procedure for each value in the map.- Parameters:
procedure
- aT#F#Procedure
value- Returns:
- false if the loop over the values terminated because the procedure returned false for some value.
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forEachEntry
boolean forEachEntry(TDoubleDoubleProcedure procedure)
Executes procedure for each key/value entry in the map.- Parameters:
procedure
- aTODoubleDoubleProcedure
value- Returns:
- false if the loop over the entries terminated because the procedure returned false for some entry.
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transformValues
void transformValues(TDoubleFunction function)
Transform the values in this map using function.- Parameters:
function
- aTDoubleFunction
value
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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.
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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.
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adjustValue
boolean adjustValue(double key, double amount)
Adjusts the primitive value mapped to key.- Parameters:
key
- the key of the value to incrementamount
- the amount to adjust the value by.- Returns:
- true if a mapping was found and modified.
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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 put_amount is put in the map.- Parameters:
key
- the key of the value to incrementadjust_amount
- the amount to adjust the value byput_amount
- the value put into the map if the key is not present- Returns:
- the value present in the map after the adjustment or put operation
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