Package org.eclipse.collections.impl.utility

Class MapIterate

java.lang.Object

org.eclipse.collections.impl.utility.MapIterate

public final class MapIterate
extends java.lang.Object

The MapIterate class provides a few of the methods from the Smalltalk Collection Protocol. This includes:

• select: -- a.k.a. filter
• reject: -- a.k.a. not-filter
• collect: -- a.k.a. transform, map, tear-off
• inject:into: -- closely related to reduce and fold
• detect: -- a.k.a. find, search
• detect:ifNone:
• anySatisfy: -- a.k.a. exists
• allSatisfy:

Since Maps have two data-points per entry (i.e. key and value), most of the implementations in this class iterates over the values only, unless otherwise specified. To iterate over the keys, use keySet() with standard Iterate methods.

Since:

1.0

See Also:

Iterate

Method Summary

Modifier and Type	Method	Description
static <K,V> java.util.Collection<K>	addAllKeysTo(java.util.Map<K,V> map, java.util.Collection<K> targetCollection)	Adds all the keys from map to a the specified targetCollection.
static <K,V> java.util.Collection<V>	addAllValuesTo(java.util.Map<K,V> map, java.util.Collection<V> targetCollection)	Adds all the values from map to a the specified targetCollection.
static <K,V> boolean	allSatisfy(java.util.Map<K,V> map, Predicate<? super V> predicate)
static <K,V> boolean	anySatisfy(java.util.Map<K,V> map, Predicate<? super V> predicate)
static <K,V,A> MutableList<A>	collect(java.util.Map<K,V> map, Function<? super V,? extends A> function)
static <K,V,A,R extends java.util.Collection<A>> R	collect(java.util.Map<K,V> map, Function<? super V,? extends A> function, R targetCollection)
static <K,V,K2,V2> MutableMap<K2,V2>	collect(java.util.Map<K,V> map, Function2<? super K,? super V,Pair<K2,V2>> function)	For each value of the map, the function is evaluated with the key and value as the parameter.
static <K1,V1,K2,V2> MutableMap<K2,V2>	collect(java.util.Map<K1,V1> map, Function<? super K1,? extends K2> keyFunction, Function<? super V1,? extends V2> valueFunction)	For each key-value entry of a map, applies a function to each, and adds the transformed entry to a new Map.
static <K1,V1,K2,V2> MutableMap<K2,V2>	collect(java.util.Map<K1,V1> map, Function<? super K1,? extends K2> keyFunction, Function<? super V1,? extends V2> valueFunction, java.util.Map<K2,V2> target)	For each key-value entry of a map, applies a function to each, and adds the transformed entry to the target Map.
static <K1,V1,K2,V2,R extends java.util.Map<K2,V2>> R	collect(java.util.Map<K1,V1> map, Function2<? super K1,? super V1,Pair<K2,V2>> function, R target)	For each value of the map, the function is evaluated with the key and value as the parameter.
static <K,V> MutableBooleanCollection	collectBoolean(java.util.Map<K,V> map, BooleanFunction<? super V> booleanFunction)
static <K,V,R extends MutableBooleanCollection> R	collectBoolean(java.util.Map<K,V> map, BooleanFunction<? super V> booleanFunction, R target)
static <K,V> MutableByteCollection	collectByte(java.util.Map<K,V> map, ByteFunction<? super V> byteFunction)
static <K,V,R extends MutableByteCollection> R	collectByte(java.util.Map<K,V> map, ByteFunction<? super V> byteFunction, R target)
static <K,V> MutableCharCollection	collectChar(java.util.Map<K,V> map, CharFunction<? super V> charFunction)
static <K,V,R extends MutableCharCollection> R	collectChar(java.util.Map<K,V> map, CharFunction<? super V> charFunction, R target)
static <K,V> MutableDoubleCollection	collectDouble(java.util.Map<K,V> map, DoubleFunction<? super V> doubleFunction)
static <K,V,R extends MutableDoubleCollection> R	collectDouble(java.util.Map<K,V> map, DoubleFunction<? super V> doubleFunction, R target)
static <K,V> MutableFloatCollection	collectFloat(java.util.Map<K,V> map, FloatFunction<? super V> floatFunction)
static <K,V,R extends MutableFloatCollection> R	collectFloat(java.util.Map<K,V> map, FloatFunction<? super V> floatFunction, R target)
static <K1,V1,K2,V2> MutableMap<K2,V2>	collectIf(java.util.Map<K1,V1> map, Function2<? super K1,? super V1,Pair<K2,V2>> function, Predicate2<? super K1,? super V1> predicate)	For each value of the map, the Predicate2 is evaluated with the key and value as the parameter, and if true, then function is applied.
static <K1,V1,K2,V2> MutableMap<K2,V2>	collectIf(java.util.Map<K1,V1> map, Function2<? super K1,? super V1,Pair<K2,V2>> function, Predicate2<? super K1,? super V1> predicate, java.util.Map<K2,V2> target)	For each value of the map, the Predicate2 is evaluated with the key and value as the parameter, and if true, then function is applied.
static <K,V> MutableIntCollection	collectInt(java.util.Map<K,V> map, IntFunction<? super V> intFunction)
static <K,V,R extends MutableIntCollection> R	collectInt(java.util.Map<K,V> map, IntFunction<? super V> intFunction, R target)
static <K,V> MutableLongCollection	collectLong(java.util.Map<K,V> map, LongFunction<? super V> longFunction)
static <K,V,R extends MutableLongCollection> R	collectLong(java.util.Map<K,V> map, LongFunction<? super V> longFunction, R target)
static <K,V> MutableShortCollection	collectShort(java.util.Map<K,V> map, ShortFunction<? super V> shortFunction)
static <K,V,R extends MutableShortCollection> R	collectShort(java.util.Map<K,V> map, ShortFunction<? super V> shortFunction, R target)
static <K,V,V2> MutableMap<K,V2>	collectValues(java.util.Map<K,V> map, Function2<? super K,? super V,? extends V2> function)	For each key and value of the map, the function is evaluated with the key and value as the parameter.
static <K,V,V2,R extends java.util.Map<K,V2>> R	collectValues(java.util.Map<K,V> map, Function2<? super K,? super V,? extends V2> function, R target)	For each key and value of the map, the function is evaluated with the key and value as the parameter.
static <K,V> int	count(java.util.Map<K,V> map, Predicate<? super V> predicate)
static <K,V> V	detect(java.util.Map<K,V> map, Predicate<? super V> predicate)
static <K,V> Pair<K,V>	detect(java.util.Map<K,V> map, Predicate2<? super K,? super V> predicate)
static <K,V> V	detectIfNone(java.util.Map<K,V> map, Predicate<? super V> predicate, V ifNone)
static <K,V> java.util.Optional<V>	detectOptional(java.util.Map<K,V> map, Predicate<? super V> predicate)
static <K,V> java.util.Optional<Pair<K,V>>	detectOptional(java.util.Map<K,V> map, Predicate2<? super K,? super V> predicate)
static <K,V> MutableSetMultimap<V,K>	flip(MapIterable<K,V> iMap)
static <K,V> MutableSortedSetMultimap<V,K>	flip(SortedMapIterable<K,V> iMap)
static <K,V> MutableMap<V,K>	flipUniqueValues(MapIterable<K,V> mapIterable)
static <K,V> void	forEachKey(java.util.Map<K,V> map, Procedure<? super K> procedure)	For each key of the map, procedure is evaluated with the key as the parameter.
static <K,V> void	forEachKeyValue(java.util.Map<K,V> map, Procedure2<? super K,? super V> procedure)	For each entry of the map, procedure is evaluated with the element as the parameter.
static <K,V> void	forEachValue(java.util.Map<K,V> map, Procedure<? super V> procedure)	For each value of the map, procedure is evaluated with the value as the parameter.
static <K,V> V	getIfAbsent(java.util.Map<K,V> map, K key, Function0<? extends V> instanceBlock)	Get and return the value in the Map that corresponds to the specified key, or if there is no value at the key, return the result of evaluating the specified Function0.
static <K,V> V	getIfAbsentDefault(java.util.Map<K,V> map, K key, V defaultValue)	Get and return the value in the Map at the specified key, or if there is no value at the key, return the defaultValue.
static <K,V> V	getIfAbsentPut(java.util.Map<K,V> map, K key, Function0<? extends V> instanceBlock)	Get and return the value in the Map at the specified key, or if there is no value at the key, return the result of evaluating the specified Function0, and put that value in the map at the specified key.
static <K,V,P> V	getIfAbsentPutWith(java.util.Map<K,V> map, K key, Function<? super P,? extends V> function, P parameter)	Get and return the value in the Map at the specified key, or if there is no value at the key, return the result of evaluating the specified Function with the parameter, and put that value in the map at the specified key.
static <K,V,P> V	getIfAbsentWith(java.util.Map<K,V> map, K key, Function<? super P,? extends V> function, P parameter)	Get and return the value in the Map that corresponds to the specified key, or if there is no value at the key, return the result of evaluating the specified Function with the specified parameter.
static <K,V,A> A	ifPresentApply(java.util.Map<K,V> map, K key, Function<? super V,? extends A> function)	If there is a value in the Map tat the specified key, return the result of applying the specified Function on the value, otherwise return null.
static <K,V,IV> IV	injectInto(IV injectValue, java.util.Map<K,V> map, Function2<? super IV,? super V,? extends IV> function)
static <IV,K,V> IV	injectIntoIf(IV initialValue, java.util.Map<K,V> map, Predicate<? super V> predicate, Function2<? super IV,? super V,? extends IV> function)	Same as injectInto(Object, Map, Function2), but only applies the value to the function if the predicate returns true for the value.
static boolean	isEmpty(java.util.Map<?,?> map)	A null-safe check on a map to see if it isEmpty.
static <K,V> boolean	noneSatisfy(java.util.Map<K,V> map, Predicate<? super V> predicate)
static boolean	notEmpty(java.util.Map<?,?> map)	A null-safe check on a map to see if it notEmpty.
static <K,V> int	occurrencesOf(java.util.Map<K,V> map, V object)	Return the number of occurrences of object in the specified map.
static <K,V,A> int	occurrencesOfAttribute(java.util.Map<K,V> map, Function<? super V,? extends A> function, A object)	Return the number of occurrences where object is equal to the specified attribute in the specified map.
static <K,V> MutableList<V>	reject(java.util.Map<K,V> map, Predicate<? super V> predicate)
static <K,V,R extends java.util.Collection<V>> R	reject(java.util.Map<K,V> map, Predicate<? super V> predicate, R targetCollection)
static <K,V> MutableMap<K,V>	rejectMapOnEntry(java.util.Map<K,V> map, Predicate2<? super K,? super V> predicate)	For each value of the map, predicate is evaluated with the element as the parameter.
static <K,V,R extends java.util.Map<K,V>> R	rejectMapOnEntry(java.util.Map<K,V> map, Predicate2<? super K,? super V> predicate, R target)	For each value of the map, predicate is evaluated with the element as the parameter.
static <K,V> MutableMap<V,K>	reverseMapping(java.util.Map<K,V> map)	Return a new map swapping key-value for value-key.
static <K,V> MutableList<V>	select(java.util.Map<K,V> map, Predicate<? super V> predicate)
static <K,V,R extends java.util.Collection<V>> R	select(java.util.Map<K,V> map, Predicate<? super V> predicate, R targetCollection)
static <K,V> MutableMap<K,V>	selectMapOnEntry(java.util.Map<K,V> map, Predicate2<? super K,? super V> predicate)	For each entry of the source map, the Predicate2 is evaluated.
static <K,V,R extends java.util.Map<K,V>> R	selectMapOnEntry(java.util.Map<K,V> map, Predicate2<? super K,? super V> predicate, R target)	For each entry of the source map, the Predicate2 is evaluated.
static <K,V> MutableMap<K,V>	selectMapOnKey(java.util.Map<K,V> map, Predicate<? super K> predicate)	For each key of the source map, the Predicate is evaluated.
static <K,V> MutableMap<K,V>	selectMapOnValue(java.util.Map<K,V> map, Predicate<? super V> predicate)	For each value of the source map, the Predicate is evaluated.
static <K,V> MutableList<Pair<K,V>>	toListOfPairs(java.util.Map<K,V> map)	Iterate over the specified map applying the specified Function to each value and return the results as a List.
static <K,V> MutableList<V>	toSortedList(java.util.Map<K,V> map, java.util.Comparator<? super V> comparator)	Iterate over the specified map applying the specified Function to each value and return the results as a sorted List using the specified Comparator.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

isEmpty

public static boolean isEmpty(java.util.Map<?,?> map)

A null-safe check on a map to see if it isEmpty. A null collection results in true.

notEmpty

public static boolean notEmpty(java.util.Map<?,?> map)

A null-safe check on a map to see if it notEmpty. A null collection results in false.

getIfAbsentPut

public static <K,V> V getIfAbsentPut(java.util.Map<K,V> map,
                                     K key,
                                     Function0<? extends V> instanceBlock)

Get and return the value in the Map at the specified key, or if there is no value at the key, return the result of evaluating the specified Function0, and put that value in the map at the specified key.

This method handles the null-value-at-key case correctly.

getIfAbsentPutWith

public static <K,V,P> V getIfAbsentPutWith(java.util.Map<K,V> map,
                                           K key,
                                           Function<? super P,? extends V> function,
                                           P parameter)

Get and return the value in the Map at the specified key, or if there is no value at the key, return the result of evaluating the specified Function with the parameter, and put that value in the map at the specified key.

getIfAbsent

public static <K,V> V getIfAbsent(java.util.Map<K,V> map,
                                  K key,
                                  Function0<? extends V> instanceBlock)

Get and return the value in the Map that corresponds to the specified key, or if there is no value at the key, return the result of evaluating the specified Function0.

getIfAbsentWith

public static <K,V,P> V getIfAbsentWith(java.util.Map<K,V> map,
                                        K key,
                                        Function<? super P,? extends V> function,
                                        P parameter)

Get and return the value in the Map that corresponds to the specified key, or if there is no value at the key, return the result of evaluating the specified Function with the specified parameter.

getIfAbsentDefault

public static <K,V> V getIfAbsentDefault(java.util.Map<K,V> map,
                                         K key,
                                         V defaultValue)

Get and return the value in the Map at the specified key, or if there is no value at the key, return the defaultValue.

ifPresentApply

public static <K,V,A> A ifPresentApply(java.util.Map<K,V> map,
                                       K key,
                                       Function<? super V,? extends A> function)

If there is a value in the Map tat the specified key, return the result of applying the specified Function on the value, otherwise return null.

select

public static <K,V> MutableList<V> select(java.util.Map<K,V> map,
                                          Predicate<? super V> predicate)

See Also:

Iterate.select(Iterable, Predicate)

select

public static <K,V,R extends java.util.Collection<V>> R select(java.util.Map<K,V> map,
                                                               Predicate<? super V> predicate,
                                                               R targetCollection)

See Also:

Iterate.select(Iterable, Predicate, Collection)

count

public static <K,V> int count(java.util.Map<K,V> map,
                              Predicate<? super V> predicate)

See Also:

Iterate.count(Iterable, Predicate)

selectMapOnEntry

public static <K,V> MutableMap<K,V> selectMapOnEntry(java.util.Map<K,V> map,
                                                     Predicate2<? super K,? super V> predicate)

For each entry of the source map, the Predicate2 is evaluated. If the result of the evaluation is true, the map entry is moved to a result map. The result map is returned containing all entries in the source map that evaluated to true.

selectMapOnEntry

public static <K,V,R extends java.util.Map<K,V>> R selectMapOnEntry(java.util.Map<K,V> map,
                                                                    Predicate2<? super K,? super V> predicate,
                                                                    R target)

For each entry of the source map, the Predicate2 is evaluated. If the result of the evaluation is true, the map entry is moved to a result map. The result map is returned containing all entries in the source map that evaluated to true.

selectMapOnKey

public static <K,V> MutableMap<K,V> selectMapOnKey(java.util.Map<K,V> map,
                                                   Predicate<? super K> predicate)

For each key of the source map, the Predicate is evaluated. If the result of the evaluation is true, the map entry is moved to a result map. The result map is returned containing all entries in the source map that evaluated to true.

selectMapOnValue

public static <K,V> MutableMap<K,V> selectMapOnValue(java.util.Map<K,V> map,
                                                     Predicate<? super V> predicate)

For each value of the source map, the Predicate is evaluated. If the result of the evaluation is true, the map entry is moved to a result map. The result map is returned containing all entries in the source map that evaluated to true.

reject

public static <K,V> MutableList<V> reject(java.util.Map<K,V> map,
                                          Predicate<? super V> predicate)

See Also:

Iterate.reject(Iterable, Predicate)

reject

public static <K,V,R extends java.util.Collection<V>> R reject(java.util.Map<K,V> map,
                                                               Predicate<? super V> predicate,
                                                               R targetCollection)

See Also:

Iterate.reject(Iterable, Predicate, Collection)

rejectMapOnEntry

public static <K,V> MutableMap<K,V> rejectMapOnEntry(java.util.Map<K,V> map,
                                                     Predicate2<? super K,? super V> predicate)

For each value of the map, predicate is evaluated with the element as the parameter. Each element which causes predicate to evaluate to false is included in the new collection.

rejectMapOnEntry

public static <K,V,R extends java.util.Map<K,V>> R rejectMapOnEntry(java.util.Map<K,V> map,
                                                                    Predicate2<? super K,? super V> predicate,
                                                                    R target)

For each value of the map, predicate is evaluated with the element as the parameter. Each element which causes predicate to evaluate to false is added to the targetCollection.

addAllKeysTo

public static <K,V> java.util.Collection<K> addAllKeysTo(java.util.Map<K,V> map,
                                                         java.util.Collection<K> targetCollection)

Adds all the keys from map to a the specified targetCollection.

addAllValuesTo

public static <K,V> java.util.Collection<V> addAllValuesTo(java.util.Map<K,V> map,
                                                           java.util.Collection<V> targetCollection)

Adds all the values from map to a the specified targetCollection.

collect

public static <K,V,A> MutableList<A> collect(java.util.Map<K,V> map,
                                             Function<? super V,? extends A> function)

See Also:

Iterate.collect(Iterable, Function)

collectBoolean

public static <K,V> MutableBooleanCollection collectBoolean(java.util.Map<K,V> map,
                                                            BooleanFunction<? super V> booleanFunction)

See Also:

RichIterable.collectBoolean(BooleanFunction)

collectBoolean

public static <K,V,R extends MutableBooleanCollection> R collectBoolean(java.util.Map<K,V> map,
                                                                        BooleanFunction<? super V> booleanFunction,
                                                                        R target)

See Also:

RichIterable.collectBoolean(BooleanFunction, MutableBooleanCollection)

collectByte

public static <K,V> MutableByteCollection collectByte(java.util.Map<K,V> map,
                                                      ByteFunction<? super V> byteFunction)

See Also:

RichIterable.collectByte(ByteFunction)

collectByte

public static <K,V,R extends MutableByteCollection> R collectByte(java.util.Map<K,V> map,
                                                                  ByteFunction<? super V> byteFunction,
                                                                  R target)

See Also:

RichIterable.collectByte(ByteFunction, MutableByteCollection)

collectChar

public static <K,V> MutableCharCollection collectChar(java.util.Map<K,V> map,
                                                      CharFunction<? super V> charFunction)

See Also:

RichIterable.collectChar(CharFunction)

collectChar

public static <K,V,R extends MutableCharCollection> R collectChar(java.util.Map<K,V> map,
                                                                  CharFunction<? super V> charFunction,
                                                                  R target)

See Also:

RichIterable.collectChar(CharFunction, MutableCharCollection)

collectDouble

public static <K,V> MutableDoubleCollection collectDouble(java.util.Map<K,V> map,
                                                          DoubleFunction<? super V> doubleFunction)

See Also:

RichIterable.collectDouble(DoubleFunction)

collectDouble

public static <K,V,R extends MutableDoubleCollection> R collectDouble(java.util.Map<K,V> map,
                                                                      DoubleFunction<? super V> doubleFunction,
                                                                      R target)

See Also:

RichIterable.collectDouble(DoubleFunction, MutableDoubleCollection)

collectFloat

public static <K,V> MutableFloatCollection collectFloat(java.util.Map<K,V> map,
                                                        FloatFunction<? super V> floatFunction)

See Also:

RichIterable.collectFloat(FloatFunction)

collectFloat

public static <K,V,R extends MutableFloatCollection> R collectFloat(java.util.Map<K,V> map,
                                                                    FloatFunction<? super V> floatFunction,
                                                                    R target)

See Also:

RichIterable.collectFloat(FloatFunction, MutableFloatCollection)

collectInt

public static <K,V> MutableIntCollection collectInt(java.util.Map<K,V> map,
                                                    IntFunction<? super V> intFunction)

See Also:

RichIterable.collectInt(IntFunction)

collectInt

public static <K,V,R extends MutableIntCollection> R collectInt(java.util.Map<K,V> map,
                                                                IntFunction<? super V> intFunction,
                                                                R target)

See Also:

RichIterable.collectInt(IntFunction, MutableIntCollection)

collectLong

public static <K,V> MutableLongCollection collectLong(java.util.Map<K,V> map,
                                                      LongFunction<? super V> longFunction)

See Also:

RichIterable.collectLong(LongFunction)

collectLong

public static <K,V,R extends MutableLongCollection> R collectLong(java.util.Map<K,V> map,
                                                                  LongFunction<? super V> longFunction,
                                                                  R target)

See Also:

RichIterable.collectLong(LongFunction, MutableLongCollection)

collectShort

public static <K,V> MutableShortCollection collectShort(java.util.Map<K,V> map,
                                                        ShortFunction<? super V> shortFunction)

See Also:

RichIterable.collectShort(ShortFunction)

collectShort

public static <K,V,R extends MutableShortCollection> R collectShort(java.util.Map<K,V> map,
                                                                    ShortFunction<? super V> shortFunction,
                                                                    R target)

See Also:

RichIterable.collectShort(ShortFunction, MutableShortCollection)

collect

public static <K,V,K2,V2> MutableMap<K2,V2> collect(java.util.Map<K,V> map,
                                                    Function2<? super K,? super V,Pair<K2,V2>> function)

For each value of the map, the function is evaluated with the key and value as the parameter. The results of these evaluations are collected into a new UnifiedMap.

collect

public static <K1,V1,K2,V2,R extends java.util.Map<K2,V2>> R collect(java.util.Map<K1,V1> map,
                                                                     Function2<? super K1,? super V1,Pair<K2,V2>> function,
                                                                     R target)

For each value of the map, the function is evaluated with the key and value as the parameter. The results of these evaluations are collected into the target map.

collectValues

public static <K,V,V2> MutableMap<K,V2> collectValues(java.util.Map<K,V> map,
                                                      Function2<? super K,? super V,? extends V2> function)

For each key and value of the map, the function is evaluated with the key and value as the parameter. The results of these evaluations are collected into the target map.

collectValues

public static <K,V,V2,R extends java.util.Map<K,V2>> R collectValues(java.util.Map<K,V> map,
                                                                     Function2<? super K,? super V,? extends V2> function,
                                                                     R target)

For each key and value of the map, the function is evaluated with the key and value as the parameter. The results of these evaluations are collected into the target map.

collectIf

public static <K1,V1,K2,V2> MutableMap<K2,V2> collectIf(java.util.Map<K1,V1> map,
                                                        Function2<? super K1,? super V1,Pair<K2,V2>> function,
                                                        Predicate2<? super K1,? super V1> predicate)

For each value of the map, the Predicate2 is evaluated with the key and value as the parameter, and if true, then function is applied. The results of these evaluations are collected into a new map.

collectIf

public static <K1,V1,K2,V2> MutableMap<K2,V2> collectIf(java.util.Map<K1,V1> map,
                                                        Function2<? super K1,? super V1,Pair<K2,V2>> function,
                                                        Predicate2<? super K1,? super V1> predicate,
                                                        java.util.Map<K2,V2> target)

For each value of the map, the Predicate2 is evaluated with the key and value as the parameter, and if true, then function is applied. The results of these evaluations are collected into the target map.

collect

public static <K1,V1,K2,V2> MutableMap<K2,V2> collect(java.util.Map<K1,V1> map,
                                                      Function<? super K1,? extends K2> keyFunction,
                                                      Function<? super V1,? extends V2> valueFunction)

For each key-value entry of a map, applies a function to each, and adds the transformed entry to a new Map.

collect

public static <K1,V1,K2,V2> MutableMap<K2,V2> collect(java.util.Map<K1,V1> map,
                                                      Function<? super K1,? extends K2> keyFunction,
                                                      Function<? super V1,? extends V2> valueFunction,
                                                      java.util.Map<K2,V2> target)

For each key-value entry of a map, applies a function to each, and adds the transformed entry to the target Map.

collect

public static <K,V,A,R extends java.util.Collection<A>> R collect(java.util.Map<K,V> map,
                                                                  Function<? super V,? extends A> function,
                                                                  R targetCollection)

See Also:

Iterate.collect(Iterable, Function, Collection)

forEachValue

public static <K,V> void forEachValue(java.util.Map<K,V> map,
                                      Procedure<? super V> procedure)

For each value of the map, procedure is evaluated with the value as the parameter.

forEachKey

public static <K,V> void forEachKey(java.util.Map<K,V> map,
                                    Procedure<? super K> procedure)

For each key of the map, procedure is evaluated with the key as the parameter.

forEachKeyValue

public static <K,V> void forEachKeyValue(java.util.Map<K,V> map,
                                         Procedure2<? super K,? super V> procedure)

For each entry of the map, procedure is evaluated with the element as the parameter.

flipUniqueValues

public static <K,V> MutableMap<V,K> flipUniqueValues(MapIterable<K,V> mapIterable)

See Also:

MapIterable.flipUniqueValues()

detect

public static <K,V> Pair<K,V> detect(java.util.Map<K,V> map,
                                     Predicate2<? super K,? super V> predicate)

detect

public static <K,V> V detect(java.util.Map<K,V> map,
                             Predicate<? super V> predicate)

See Also:

Iterate.detect(Iterable, Predicate)

detectOptional

public static <K,V> java.util.Optional<Pair<K,V>> detectOptional(java.util.Map<K,V> map,
                                                                 Predicate2<? super K,? super V> predicate)

detectOptional

public static <K,V> java.util.Optional<V> detectOptional(java.util.Map<K,V> map,
                                                         Predicate<? super V> predicate)

See Also:

Iterate.detectOptional(Iterable, Predicate)

detectIfNone

public static <K,V> V detectIfNone(java.util.Map<K,V> map,
                                   Predicate<? super V> predicate,
                                   V ifNone)

See Also:

Iterate.detectIfNone(Iterable, Predicate, Object)

injectInto

public static <K,V,IV> IV injectInto(IV injectValue,
                                     java.util.Map<K,V> map,
                                     Function2<? super IV,? super V,? extends IV> function)

See Also:

Iterate.injectInto(Object, Iterable, Function2)

injectIntoIf

public static <IV,K,V> IV injectIntoIf(IV initialValue,
                                       java.util.Map<K,V> map,
                                       Predicate<? super V> predicate,
                                       Function2<? super IV,? super V,? extends IV> function)

Same as injectInto(Object, Map, Function2), but only applies the value to the function if the predicate returns true for the value.

See Also:

injectInto(Object, Map, Function2)

anySatisfy

public static <K,V> boolean anySatisfy(java.util.Map<K,V> map,
                                       Predicate<? super V> predicate)

See Also:

Iterate.anySatisfy(Iterable, Predicate)

allSatisfy

public static <K,V> boolean allSatisfy(java.util.Map<K,V> map,
                                       Predicate<? super V> predicate)

See Also:

Iterate.allSatisfy(Iterable, Predicate)

noneSatisfy

public static <K,V> boolean noneSatisfy(java.util.Map<K,V> map,
                                        Predicate<? super V> predicate)

See Also:

Iterate.noneSatisfy(Iterable, Predicate)

toListOfPairs

public static <K,V> MutableList<Pair<K,V>> toListOfPairs(java.util.Map<K,V> map)

Iterate over the specified map applying the specified Function to each value and return the results as a List.

toSortedList

public static <K,V> MutableList<V> toSortedList(java.util.Map<K,V> map,
                                                java.util.Comparator<? super V> comparator)

Iterate over the specified map applying the specified Function to each value and return the results as a sorted List using the specified Comparator.

reverseMapping

public static <K,V> MutableMap<V,K> reverseMapping(java.util.Map<K,V> map)

Return a new map swapping key-value for value-key. If the original map contains entries with the same value, the result mapping is undefined, in that the last entry applied wins (the order of application is undefined).

occurrencesOf

public static <K,V> int occurrencesOf(java.util.Map<K,V> map,
                                      V object)

Return the number of occurrences of object in the specified map.

occurrencesOfAttribute

public static <K,V,A> int occurrencesOfAttribute(java.util.Map<K,V> map,
                                                 Function<? super V,? extends A> function,
                                                 A object)

Return the number of occurrences where object is equal to the specified attribute in the specified map.

flip

public static <K,V> MutableSetMultimap<V,K> flip(MapIterable<K,V> iMap)

flip

public static <K,V> MutableSortedSetMultimap<V,K> flip(SortedMapIterable<K,V> iMap)