Package org.apache.tapestry5.func

Interface ZippedFlow<A,B>

Type Parameters:

A - first type

B - second type

All Superinterfaces:

<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	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.
<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.

, ,

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

<A,B> toMap()

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