Package gnu.trove.map

Interface TMap<K,V>

All Superinterfaces:

Map<K,V>

All Known Implementing Classes:

TCustomHashMap, THashMap

public interface TMap<K,V>
extends Map<K,V>

Interface extension to Map which adds Trove-specific features.

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Method Summary

Modifier and Type	Method	Description
boolean	forEachEntry(TObjectObjectProcedure<? super K,? super V> procedure)	Executes procedure for each key/value entry in the map.
boolean	forEachKey(TObjectProcedure<? super K> procedure)	Executes procedure for each key in the map.
boolean	forEachValue(TObjectProcedure<? super V> procedure)	Executes procedure for each value in the map.
V	putIfAbsent(K key, V value)	Inserts a key/value pair into the map if the specified key is not already associated with a value.
boolean	retainEntries(TObjectObjectProcedure<? super K,? super V> procedure)	Retains only those entries in the map for which the procedure returns a true value.
void	transformValues(TObjectFunction<V,V> function)	Transform the values in this map using function.

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, remove, remove, replace, replace, replaceAll, size, values

Method Details

putIfAbsent

V putIfAbsent(K key,
 V value)

Inserts a key/value pair into the map if the specified key is not already associated with a value.

Specified by:

putIfAbsent in interface Map<K,V>

Parameters:

key - an Object value

value - an Object value

Returns:

the previous value associated with key, or null if none was found.

forEachKey

boolean forEachKey(TObjectProcedure<? super K> procedure)

Executes procedure for each key in the map.

Parameters:

procedure - a TObjectProcedure value

Returns:

false if the loop over the keys terminated because the procedure returned false for some key.

forEachValue

boolean forEachValue(TObjectProcedure<? super V> procedure)

Executes procedure for each value in the map.

Parameters:

procedure - a TObjectProcedure value

Returns:

false if the loop over the values terminated because the procedure returned false for some value.

forEachEntry

boolean forEachEntry(TObjectObjectProcedure<? super K,? super V> procedure)

Executes procedure for each key/value entry in the map.

Parameters:

procedure - a TObjectObjectProcedure value

Returns:

false if the loop over the entries terminated because the procedure returned false for some entry.

retainEntries

boolean retainEntries(TObjectObjectProcedure<? super K,? super V> 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.

transformValues

void transformValues(TObjectFunction<V,V> function)

Transform the values in this map using function.

Parameters:

function - a TObjectFunction value