Package gnu.trove.map
Interface TByteDoubleMap
- All Known Implementing Classes:
TByteDoubleHashMap
public interface TByteDoubleMap
Interface for a primitive map of byte keys and double values.
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Method Summary
Modifier and TypeMethodDescriptiondouble
adjustOrPutValue
(byte 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
(byte key, double amount) Adjusts the primitive value mapped to key.void
clear()
Empties the map.boolean
containsKey
(byte 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
(TByteDoubleProcedure procedure) Executes procedure for each key/value entry in the map.boolean
forEachKey
(TByteProcedure procedure) Executes procedure for each key in the map.boolean
forEachValue
(TDoubleProcedure procedure) Executes procedure for each value in the map.double
get
(byte key) Retrieves the value for keybyte
Returns the value that will be returned fromget(byte)
orput(byte, double)
if no entry exists for a given key.double
Returns the value that will be returned fromget(byte)
orput(byte, double)
if no entry exists for a given key.boolean
increment
(byte key) Increments the primitive value mapped to key by 1boolean
isEmpty()
Returns true if this map contains no key-value mappings.iterator()
byte[]
keys()
Returns the keys of the map as an array of byte values.byte[]
keys
(byte[] array) Returns the keys of the map.keySet()
Returns the keys of the map as a TByteSetdouble
put
(byte key, double value) Inserts a key/value pair into the map.void
putAll
(TByteDoubleMap map) Put all the entries from the given map into this map.void
Put all the entries from the given Map into this map.double
putIfAbsent
(byte key, double value) Inserts a key/value pair into the map if the specified key is not already associated with a value.double
remove
(byte key) Deletes a key/value pair from the map.boolean
retainEntries
(TByteDoubleProcedure 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.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 Details
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getNoEntryKey
byte getNoEntryKey()Returns the value that will be returned fromget(byte)
orput(byte, 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.
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getNoEntryValue
double getNoEntryValue()Returns the value that will be returned fromget(byte)
orput(byte, 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.
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put
double put(byte key, double value) Inserts a key/value pair into the map.- Parameters:
key
- anbyte
valuevalue
- andouble
value- 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(byte key, double value) Inserts a key/value pair into the map if the specified key is not already associated with a value.- Parameters:
key
- anbyte
valuevalue
- andouble
value- Returns:
- the previous value associated with key, or the "no entry" value
if none was found (see
getNoEntryValue()
).
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putAll
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
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(byte key) Retrieves the value for key- Parameters:
key
- anbyte
value- 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. -
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(byte key) Deletes a key/value pair from the map.- Parameters:
key
- anbyte
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
TByteSet keySet()Returns the keys of the map as a TByteSet- Returns:
- the keys of the map as a TByteSet
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keys
byte[] keys()Returns the keys of the map as an array of byte values.- Returns:
- the keys of the map as an array of byte values.
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keys
byte[] keys(byte[] 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.- Parameters:
val
- andouble
value- Returns:
- a
boolean
value
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containsKey
boolean containsKey(byte key) Checks for the present of key in the keys of the map.- Parameters:
key
- anbyte
value- Returns:
- a
boolean
value
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iterator
TByteDoubleIterator iterator()- Returns:
- a TByteDoubleIterator with access to this map's keys and values
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forEachKey
Executes procedure for each key in the map.- Parameters:
procedure
- aTByteProcedure
value- Returns:
- false if the loop over the keys terminated because the procedure returned false for some key.
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forEachValue
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
Executes procedure for each key/value entry in the map.- Parameters:
procedure
- aTOByteDoubleProcedure
value- Returns:
- false if the loop over the entries terminated because the procedure returned false for some entry.
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transformValues
Transform the values in this map using function.- Parameters:
function
- aTDoubleFunction
value
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retainEntries
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(byte 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(byte 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(byte 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 incrementadjust_amount
- the amount to adjust the value byput_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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