public interface ReversibleIterable<T> extends OrderedIterable<T>
asReversed() and
reverseForEach(Procedure).| Modifier and Type | Method and Description |
|---|---|
LazyIterable<T> |
asReversed()
Returns a reversed view of this ReversibleIterable.
|
<V> ReversibleIterable<V> |
collect(Function<? super T,? extends V> function)
Returns a new collection with the results of applying the specified function on each element of the source
collection.
|
ReversibleBooleanIterable |
collectBoolean(BooleanFunction<? super T> booleanFunction)
Returns a new primitive
boolean iterable with the results of applying the specified function on each element
of the source collection. |
ReversibleByteIterable |
collectByte(ByteFunction<? super T> byteFunction)
Returns a new primitive
byte iterable with the results of applying the specified function on each element
of the source collection. |
ReversibleCharIterable |
collectChar(CharFunction<? super T> charFunction)
Returns a new primitive
char iterable with the results of applying the specified function on each element
of the source collection. |
ReversibleDoubleIterable |
collectDouble(DoubleFunction<? super T> doubleFunction)
Returns a new primitive
double iterable with the results of applying the specified function on each element
of the source collection. |
ReversibleFloatIterable |
collectFloat(FloatFunction<? super T> floatFunction)
Returns a new primitive
float iterable with the results of applying the specified function on each element
of the source collection. |
<V> ReversibleIterable<V> |
collectIf(Predicate<? super T> predicate,
Function<? super T,? extends V> function)
Returns a new collection with the results of applying the specified function on each element of the source
collection, but only for those elements which return true upon evaluation of the predicate.
|
ReversibleIntIterable |
collectInt(IntFunction<? super T> intFunction)
Returns a new primitive
int iterable with the results of applying the specified function on each element
of the source collection. |
ReversibleLongIterable |
collectLong(LongFunction<? super T> longFunction)
Returns a new primitive
long iterable with the results of applying the specified function on each element
of the source collection. |
ReversibleShortIterable |
collectShort(ShortFunction<? super T> shortFunction)
Returns a new primitive
short iterable with the results of applying the specified function on each element
of the source collection. |
<P,V> ReversibleIterable<V> |
collectWith(Function2<? super T,? super P,? extends V> function,
P parameter)
Same as
RichIterable.collect(Function) with a Function2 and specified parameter which is passed to the block. |
int |
detectLastIndex(Predicate<? super T> predicate)
Returns the index of the last element of the
ReversibleIterable for which the predicate evaluates to true. |
ReversibleIterable<T> |
distinct()
Returns a new
OrderedIterable containing the distinct elements in this iterable. |
ReversibleIterable<T> |
drop(int count)
Returns an iterable after skipping the first
count elements
or an empty iterable if the count is greater than the length of the iterable. |
ReversibleIterable<T> |
dropWhile(Predicate<? super T> predicate)
Returns the final elements that do not satisfy the Predicate.
|
<V> ReversibleIterable<V> |
flatCollect(Function<? super T,? extends Iterable<V>> function)
flatCollect is a special case of RichIterable.collect(Function). |
<V> ReversibleIterableMultimap<V,T> |
groupBy(Function<? super T,? extends V> function)
For each element of the iterable, the function is evaluated and the results of these evaluations are collected
into a new multimap, where the transformed value is the key and the original values are added to the same (or similar)
species of collection as the source iterable.
|
<V> ReversibleIterableMultimap<V,T> |
groupByEach(Function<? super T,? extends Iterable<V>> function)
Similar to
RichIterable.groupBy(Function), except the result of evaluating function will return a collection of keys
for each value. |
PartitionReversibleIterable<T> |
partition(Predicate<? super T> predicate)
Filters a collection into a PartitionedIterable based on the evaluation of the predicate.
|
PartitionReversibleIterable<T> |
partitionWhile(Predicate<? super T> predicate)
Returns a Partition of the initial elements that satisfy the Predicate and the remaining elements.
|
<P> PartitionReversibleIterable<T> |
partitionWith(Predicate2<? super T,? super P> predicate,
P parameter)
Filters a collection into a PartitionIterable based on the evaluation of the predicate.
|
ReversibleIterable<T> |
reject(Predicate<? super T> predicate)
Returns all elements of the source collection that return false when evaluating of the predicate.
|
<P> ReversibleIterable<T> |
rejectWith(Predicate2<? super T,? super P> predicate,
P parameter)
Similar to
RichIterable.reject(Predicate), except with an evaluation parameter for the second generic argument in Predicate2. |
void |
reverseForEach(Procedure<? super T> procedure)
Evaluates the procedure for each element of the list iterating in reverse order.
|
ReversibleIterable<T> |
select(Predicate<? super T> predicate)
Returns all elements of the source collection that return true when evaluating the predicate.
|
<S> ReversibleIterable<S> |
selectInstancesOf(Class<S> clazz)
Returns all elements of the source collection that are instances of the Class
clazz. |
<P> ReversibleIterable<T> |
selectWith(Predicate2<? super T,? super P> predicate,
P parameter)
Similar to
RichIterable.select(Predicate), except with an evaluation parameter for the second generic argument in Predicate2. |
ReversibleIterable<T> |
take(int count)
Returns the first
count elements of the iterable
or all the elements in the iterable if count is greater than the length of
the iterable. |
ReversibleIterable<T> |
takeWhile(Predicate<? super T> predicate)
Returns the initial elements that satisfy the Predicate.
|
ReversibleIterable<T> |
toReversed()
Returns a new ReversibleIterable in reverse order.
|
<S> ReversibleIterable<Pair<T,S>> |
zip(Iterable<S> that)
Returns a
OrderedIterable formed from this OrderedIterable and another Iterable by
combining corresponding elements in pairs. |
ReversibleIterable<Pair<T,Integer>> |
zipWithIndex()
Zips this
RichIterable with its indices. |
corresponds, detectIndex, forEach, forEachWithIndex, forEachWithIndex, getFirst, getLast, indexOf, max, min, toStack, zip, zipWithIndexaggregateBy, aggregateInPlaceBy, allSatisfy, allSatisfyWith, anySatisfy, anySatisfyWith, appendString, appendString, appendString, asLazy, chunk, collect, collectBoolean, collectByte, collectChar, collectDouble, collectFloat, collectIf, collectInt, collectLong, collectShort, collectWith, contains, containsAll, containsAllArguments, containsAllIterable, count, countWith, detect, detectIfNone, detectWith, detectWithIfNone, each, flatCollect, groupBy, groupByEach, groupByUniqueKey, groupByUniqueKey, injectInto, injectInto, injectInto, injectInto, injectInto, isEmpty, makeString, makeString, makeString, max, maxBy, min, minBy, noneSatisfy, noneSatisfyWith, notEmpty, reject, rejectWith, select, selectWith, size, sumByDouble, sumByFloat, sumByInt, sumByLong, sumOfDouble, sumOfFloat, sumOfInt, sumOfLong, tap, toArray, toArray, toBag, toList, toMap, toSet, toSortedBag, toSortedBag, toSortedBagBy, toSortedList, toSortedList, toSortedListBy, toSortedMap, toSortedMap, toSortedSet, toSortedSet, toSortedSetBy, toStringforEach, forEachWithforEach, iterator, spliteratorvoid reverseForEach(Procedure<? super T> procedure)
e.g. people.reverseForEach(new Procedure() { public void value(Person person) { LOGGER.info(person.getName()); } });
LazyIterable<T> asReversed()
ReversibleIterable<T> toReversed()
int detectLastIndex(Predicate<? super T> predicate)
ReversibleIterable for which the predicate evaluates to true.
Returns -1 if no element evaluates true for the predicate.ReversibleIterable<T> take(int count)
count elements of the iterable
or all the elements in the iterable if count is greater than the length of
the iterable.count - the number of items to take.IllegalArgumentException - if count is less than zeroReversibleIterable<T> takeWhile(Predicate<? super T> predicate)
takeWhile in interface OrderedIterable<T>ReversibleIterable<T> drop(int count)
count elements
or an empty iterable if the count is greater than the length of the iterable.count - the number of items to drop.IllegalArgumentException - if count is less than zeroReversibleIterable<T> dropWhile(Predicate<? super T> predicate)
dropWhile in interface OrderedIterable<T>PartitionReversibleIterable<T> partitionWhile(Predicate<? super T> predicate)
OrderedIterablepartitionWhile in interface OrderedIterable<T>ReversibleIterable<T> distinct()
OrderedIterableOrderedIterable containing the distinct elements in this iterable.
Conceptually similar to RichIterable.toSet().RichIterable.toList() but retains the original order. If an element appears
multiple times in this iterable, the first one will be copied into the result.
distinct in interface OrderedIterable<T>OrderedIterable of distinct elementsReversibleIterable<T> select(Predicate<? super T> predicate)
RichIterableExample using a Java 8 lambda expression:
RichIterable<Person> selected =
people.select(person -> person.getAddress().getCity().equals("London"));
Example using an anonymous inner class:
RichIterable<Person> selected =
people.select(new Predicate<Person>()
{
public boolean accept(Person person)
{
return person.getAddress().getCity().equals("London");
}
});select in interface OrderedIterable<T>select in interface RichIterable<T><P> ReversibleIterable<T> selectWith(Predicate2<? super T,? super P> predicate, P parameter)
RichIterableRichIterable.select(Predicate), except with an evaluation parameter for the second generic argument in Predicate2.
E.g. return a Collection of Person elements where the person has an age greater than or equal to 18 years
Example using a Java 8 lambda expression:
RichIterable<Person> selected =
people.selectWith((Person person, Integer age) -> person.getAge() >= age, Integer.valueOf(18));
Example using an anonymous inner class:
RichIterable<Person> selected =
people.selectWith(new Predicate2<Person, Integer>()
{
public boolean accept(Person person, Integer age)
{
return person.getAge() >= age;
}
}, Integer.valueOf(18));
selectWith in interface OrderedIterable<T>selectWith in interface RichIterable<T>predicate - a Predicate2 to use as the select criteriaparameter - a parameter to pass in for evaluation of the second argument P in predicateRichIterable.select(Predicate)ReversibleIterable<T> reject(Predicate<? super T> predicate)
RichIterableExample using a Java 8 lambda expression:
RichIterable<Person> rejected =
people.reject(person -> person.person.getLastName().equals("Smith"));
Example using an anonymous inner class:
RichIterable<Person> rejected =
people.reject(new Predicate<Person>()
{
public boolean accept(Person person)
{
return person.person.getLastName().equals("Smith");
}
});
reject in interface OrderedIterable<T>reject in interface RichIterable<T>predicate - a Predicate to use as the reject criteriaPredicate.accept(Object) method to evaluate to false<P> ReversibleIterable<T> rejectWith(Predicate2<? super T,? super P> predicate, P parameter)
RichIterableRichIterable.reject(Predicate), except with an evaluation parameter for the second generic argument in Predicate2.
E.g. return a Collection of Person elements where the person has an age greater than or equal to 18 years
Example using a Java 8 lambda expression:
RichIterable<Person> rejected =
people.rejectWith((Person person, Integer age) -> person.getAge() < age, Integer.valueOf(18));
Example using an anonymous inner class:
MutableList<Person> rejected =
people.rejectWith(new Predicate2<Person, Integer>()
{
public boolean accept(Person person, Integer age)
{
return person.getAge() < age;
}
}, Integer.valueOf(18));
rejectWith in interface OrderedIterable<T>rejectWith in interface RichIterable<T>predicate - a Predicate2 to use as the select criteriaparameter - a parameter to pass in for evaluation of the second argument P in predicateRichIterable.select(Predicate)PartitionReversibleIterable<T> partition(Predicate<? super T> predicate)
RichIterableExample using a Java 8 lambda expression:
PartitionIterable<Person> newYorkersAndNonNewYorkers =
people.partition(person -> person.getAddress().getState().getName().equals("New York"));
Example using an anonymous inner class:
PartitionIterable<Person> newYorkersAndNonNewYorkers =
people.partition(new Predicate<Person>()
{
public boolean accept(Person person)
{
return person.getAddress().getState().getName().equals("New York");
}
});
partition in interface OrderedIterable<T>partition in interface RichIterable<T><P> PartitionReversibleIterable<T> partitionWith(Predicate2<? super T,? super P> predicate, P parameter)
RichIterableExample using a Java 8 lambda expression:
PartitionIterable<Person>> newYorkersAndNonNewYorkers =
people.partitionWith((Person person, String state) -> person.getAddress().getState().getName().equals(state), "New York");
Example using an anonymous inner class:
PartitionIterable<Person>> newYorkersAndNonNewYorkers =
people.partitionWith(new Predicate2<Person, String>()
{
public boolean accept(Person person, String state)
{
return person.getAddress().getState().getName().equals(state);
}
}, "New York");
partitionWith in interface OrderedIterable<T>partitionWith in interface RichIterable<T><S> ReversibleIterable<S> selectInstancesOf(Class<S> clazz)
RichIterableclazz.selectInstancesOf in interface OrderedIterable<T>selectInstancesOf in interface RichIterable<T><V> ReversibleIterable<V> collect(Function<? super T,? extends V> function)
RichIterableExample using a Java 8 lambda expression:
RichIterable<String> names =
people.collect(person -> person.getFirstName() + " " + person.getLastName());
Example using an anonymous inner class:
RichIterable<String> names =
people.collect(new Function<Person, String>()
{
public String valueOf(Person person)
{
return person.getFirstName() + " " + person.getLastName();
}
});
collect in interface OrderedIterable<T>collect in interface RichIterable<T><P,V> ReversibleIterable<V> collectWith(Function2<? super T,? super P,? extends V> function, P parameter)
RichIterableRichIterable.collect(Function) with a Function2 and specified parameter which is passed to the block.
Example using a Java 8 lambda expression:
RichIterable<Integer> integers =
Lists.mutable.with(1, 2, 3).collectWith((each, parameter) -> each + parameter, Integer.valueOf(1));
Example using an anonymous inner class:
Function2<Integer, Integer, Integer> addParameterFunction =
new Function2<Integer, Integer, Integer>()
{
public Integer value(Integer each, Integer parameter)
{
return each + parameter;
}
};
RichIterable<Integer> integers =
Lists.mutable.with(1, 2, 3).collectWith(addParameterFunction, Integer.valueOf(1));
collectWith in interface OrderedIterable<T>collectWith in interface RichIterable<T>function - A Function2 to use as the collect transformation functionparameter - A parameter to pass in for evaluation of the second argument P in functionRichIterable that contains the transformed elements returned by Function2.value(Object, Object)RichIterable.collect(Function)<V> ReversibleIterable<V> collectIf(Predicate<? super T> predicate, Function<? super T,? extends V> function)
RichIterableExample using a Java 8 lambda and method reference:
RichIterable<String> strings = Lists.mutable.with(1, 2, 3).collectIf(e -> e != null, Object::toString);
Example using Predicates factory:
RichIterable<String> strings = Lists.mutable.with(1, 2, 3).collectIf(Predicates.notNull(), Functions.getToString());
collectIf in interface OrderedIterable<T>collectIf in interface RichIterable<T><V> ReversibleIterable<V> flatCollect(Function<? super T,? extends Iterable<V>> function)
RichIterableflatCollect is a special case of RichIterable.collect(Function). With collect, when the Function returns
a collection, the result is a collection of collections. flatCollect outputs a single "flattened" collection
instead. This method is commonly called flatMap.
Consider the following example where we have a Person class, and each Person has a list of Address objects. Take the following Function:
Function<Person, List<Address>> addressFunction = Person::getAddresses; MutableList<Person> people = ...;Using
collect returns a collection of collections of addresses.
MutableList<List<Address>> addresses = people.collect(addressFunction);Using
flatCollect returns a single flattened list of addresses.
MutableList<Address> addresses = people.flatCollect(addressFunction);
flatCollect in interface OrderedIterable<T>flatCollect in interface RichIterable<T>function - The Function to applyfunctionReversibleBooleanIterable collectBoolean(BooleanFunction<? super T> booleanFunction)
RichIterableboolean iterable with the results of applying the specified function on each element
of the source collection. This method is also commonly called transform or map.
Example using a Java 8 lambda expression:
BooleanIterable licenses =
people.collectBoolean(person -> person.hasDrivingLicense());
Example using an anonymous inner class:
BooleanIterable licenses =
people.collectBoolean(new BooleanFunction<Person>()
{
public boolean booleanValueOf(Person person)
{
return person.hasDrivingLicense();
}
});
collectBoolean in interface OrderedIterable<T>collectBoolean in interface RichIterable<T>ReversibleByteIterable collectByte(ByteFunction<? super T> byteFunction)
RichIterablebyte iterable with the results of applying the specified function on each element
of the source collection. This method is also commonly called transform or map.
Example using a Java 8 lambda expression:
ByteIterable bytes =
people.collectByte(person -> person.getCode());
Example using an anonymous inner class:
ByteIterable bytes =
people.collectByte(new ByteFunction<Person>()
{
public byte byteValueOf(Person person)
{
return person.getCode();
}
});
collectByte in interface OrderedIterable<T>collectByte in interface RichIterable<T>ReversibleCharIterable collectChar(CharFunction<? super T> charFunction)
RichIterablechar iterable with the results of applying the specified function on each element
of the source collection. This method is also commonly called transform or map.
Example using a Java 8 lambda expression:
CharIterable chars =
people.collectChar(person -> person.getMiddleInitial());
Example using an anonymous inner class:
CharIterable chars =
people.collectChar(new CharFunction<Person>()
{
public char charValueOf(Person person)
{
return person.getMiddleInitial();
}
});
collectChar in interface OrderedIterable<T>collectChar in interface RichIterable<T>ReversibleDoubleIterable collectDouble(DoubleFunction<? super T> doubleFunction)
RichIterabledouble iterable with the results of applying the specified function on each element
of the source collection. This method is also commonly called transform or map.
Example using a Java 8 lambda expression:
DoubleIterable doubles =
people.collectDouble(person -> person.getMilesFromNorthPole());
Example using an anonymous inner class:
DoubleIterable doubles =
people.collectDouble(new DoubleFunction<Person>()
{
public double doubleValueOf(Person person)
{
return person.getMilesFromNorthPole();
}
});
collectDouble in interface OrderedIterable<T>collectDouble in interface RichIterable<T>ReversibleFloatIterable collectFloat(FloatFunction<? super T> floatFunction)
RichIterablefloat iterable with the results of applying the specified function on each element
of the source collection. This method is also commonly called transform or map.
Example using a Java 8 lambda expression:
FloatIterable floats =
people.collectFloat(person -> person.getHeightInInches());
Example using an anonymous inner class:
FloatIterable floats =
people.collectFloat(new FloatFunction<Person>()
{
public float floatValueOf(Person person)
{
return person.getHeightInInches();
}
});
collectFloat in interface OrderedIterable<T>collectFloat in interface RichIterable<T>ReversibleIntIterable collectInt(IntFunction<? super T> intFunction)
RichIterableint iterable with the results of applying the specified function on each element
of the source collection. This method is also commonly called transform or map.
Example using a Java 8 lambda expression:
IntIterable ints =
people.collectInt(person -> person.getAge());
Example using an anonymous inner class:
IntIterable ints =
people.collectInt(new IntFunction<Person>()
{
public int intValueOf(Person person)
{
return person.getAge();
}
});
collectInt in interface OrderedIterable<T>collectInt in interface RichIterable<T>ReversibleLongIterable collectLong(LongFunction<? super T> longFunction)
RichIterablelong iterable with the results of applying the specified function on each element
of the source collection. This method is also commonly called transform or map.
Example using a Java 8 lambda expression:
LongIterable longs =
people.collectLong(person -> person.getGuid());
Example using an anonymous inner class:
LongIterable longs =
people.collectLong(new LongFunction<Person>()
{
public long longValueOf(Person person)
{
return person.getGuid();
}
});
collectLong in interface OrderedIterable<T>collectLong in interface RichIterable<T>ReversibleShortIterable collectShort(ShortFunction<? super T> shortFunction)
RichIterableshort iterable with the results of applying the specified function on each element
of the source collection. This method is also commonly called transform or map.
Example using a Java 8 lambda expression:
ShortIterable shorts =
people.collectShort(person -> person.getNumberOfJunkMailItemsReceivedPerMonth());
Example using an anonymous inner class:
ShortIterable shorts =
people.collectShort(new ShortFunction<Person>()
{
public short shortValueOf(Person person)
{
return person.getNumberOfJunkMailItemsReceivedPerMonth();
}
});
collectShort in interface OrderedIterable<T>collectShort in interface RichIterable<T><V> ReversibleIterableMultimap<V,T> groupBy(Function<? super T,? extends V> function)
RichIterableExample using a Java 8 method reference:
Multimap<String, Person> peopleByLastName =
people.groupBy(Person::getLastName);
Example using an anonymous inner class:
Multimap<String, Person> peopleByLastName =
people.groupBy(new Function<Person, String>()
{
public String value(Person person)
{
return person.getLastName();
}
});
groupBy in interface OrderedIterable<T>groupBy in interface RichIterable<T><V> ReversibleIterableMultimap<V,T> groupByEach(Function<? super T,? extends Iterable<V>> function)
RichIterableRichIterable.groupBy(Function), except the result of evaluating function will return a collection of keys
for each value.groupByEach in interface OrderedIterable<T>groupByEach in interface RichIterable<T><S> ReversibleIterable<Pair<T,S>> zip(Iterable<S> that)
OrderedIterableOrderedIterable formed from this OrderedIterable and another Iterable by
combining corresponding elements in pairs. The second Iterable should also be ordered.
If one of the two Iterables is longer than the other, its
remaining elements are ignored.zip in interface OrderedIterable<T>zip in interface RichIterable<T>S - the type of the second half of the returned pairsthat - The Iterable providing the second half of each result pairOrderedIterable containing pairs consisting of corresponding elements of this OrderedIterable and that. The length of the returned OrderedIterable is the minimum of the lengths of
this OrderedIterable and that.ReversibleIterable<Pair<T,Integer>> zipWithIndex()
RichIterableRichIterable with its indices.zipWithIndex in interface OrderedIterable<T>zipWithIndex in interface RichIterable<T>RichIterable containing pairs consisting of all elements of this RichIterable
paired with their index. Indices start at 0.RichIterable.zip(Iterable)Copyright © 2004–2016. All rights reserved.