org.apache.tapestry5.func

Interface ZippedFlow<A,B>

Type Parameters:

A -

B -

All Superinterfaces:

FlowOperations<Tuple<A,B>,ZippedFlow<A,B>>, Iterable<Tuple<A,B>>

public interface ZippedFlow<A,B>
extends FlowOperations<Tuple<A,B>,ZippedFlow<A,B>>

The result of the Flow.zipWith(Flow) method (or created from a Map via F.zippedFlow(Map)), a Flow of combined Tuple values (that can be deconstructed, eventually, using unzip()).

Since:

5.3

Method Summary

Modifier and Type	Method and Description
ZippedFlow<A,B>	filterOnFirst(Predicate<? super A> predicate) Filters the tuples in the zipped flow by applying a predicate to the first value in each tuple.
ZippedFlow<A,B>	filterOnSecond(Predicate<? super B> predicate) Filters the tuples in the zipped flow by applying a predicate to the second value in each tuple.
Flow<A>	firsts() Returns a flow of the first values of the tuples of the zipped flow.
<X,Y> ZippedFlow<X,Y>	mapTuples(Mapper<Tuple<A,B>,Tuple<X,Y>> mapper) Mapping for zipped flows; a mapper is used to map tuples of this zipped flow into new tuples with a new type, forming the resulting zipped flow.
ZippedFlow<A,B>	removeOnFirst(Predicate<? super A> predicate) Removes tuples from the zipped flow by applying a predicate to the first value in each tuple.
ZippedFlow<A,B>	removeOnSecond(Predicate<? super B> predicate) Removes tuples from the zipped flow by applying a predicate to the second value in each tuple.
Flow<B>	seconds() Returns a flow of the second values of the tuples of the zipped flow.
Map<A,B>	toMap() Constructs a HashMap by converting the tuples of the zipped flow into keys (first tuple value) and values (second tuple value).
Tuple<Flow<A>,Flow<B>>	unzip() A ZippedFlow is a Flow of Tuples; this inverts that, splitting each Tuple into a Flow of elements, then assembling the result as a Tuple of two values.

Methods inherited from interface org.apache.tapestry5.func.FlowOperations

concat, count, drop, each, filter, first, isEmpty, reduce, remove, removeNulls, rest, reverse, sort, take, toList, toSet

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Method Detail

mapTuples

<X,Y> ZippedFlow<X,Y> mapTuples(Mapper<Tuple<A,B>,Tuple<X,Y>> mapper)

Mapping for zipped flows; a mapper is used to map tuples of this zipped flow into new tuples with a new type, forming the resulting zipped flow. This is a lazy operation.

unzip

Tuple<Flow<A>,Flow<B>> unzip()

A ZippedFlow is a Flow of Tuples; this inverts that, splitting each Tuple into a Flow of elements, then assembling the result as a Tuple of two values. This is a lazy operation.

Returns:

two flows of unzipped Tuples

firsts

Flow<A> firsts()

Returns a flow of the first values of the tuples of the zipped flow. This is a lazy operation.

seconds

Flow<B> seconds()

Returns a flow of the second values of the tuples of the zipped flow. This is a lazy operation.

filterOnFirst

ZippedFlow<A,B> filterOnFirst(Predicate<? super A> predicate)

Filters the tuples in the zipped flow by applying a predicate to the first value in each tuple. This is a lazy operation.

filterOnSecond

ZippedFlow<A,B> filterOnSecond(Predicate<? super B> predicate)

Filters the tuples in the zipped flow by applying a predicate to the second value in each tuple. This is a lazy operations.

removeOnFirst

ZippedFlow<A,B> removeOnFirst(Predicate<? super A> predicate)

Removes tuples from the zipped flow by applying a predicate to the first value in each tuple. This is a lazy operation.

removeOnSecond

ZippedFlow<A,B> removeOnSecond(Predicate<? super B> predicate)

Removes tuples from the zipped flow by applying a predicate to the second value in each tuple. This is a lazy operations.

toMap

Map<A,B> toMap()

Constructs a HashMap by converting the tuples of the zipped flow into keys (first tuple value) and values (second tuple value).