Package org.opencastproject.util.data

Class Monadics.IteratorMonadic<A>

java.lang.Object

org.opencastproject.util.data.Monadics.IteratorMonadic<A>

All Implemented Interfaces:

Iterable<A>

Enclosing class:

Monadics

public abstract static class Monadics.IteratorMonadic<A>
extends Object
implements Iterable<A>

The iterator monad.

Method Summary

Modifier and Type	Method	Description
abstract <B> Monadics.IteratorMonadic<B>	bind(Function<A,Iterator<B>> f)	Monadic bind.
abstract Monadics.IteratorMonadic<A>	each(Function<A,Void> e)	Apply side effect e to each element.
abstract Monadics.IteratorMonadic<A>	eachIndex(Function2<A,Integer,Void> e)	Apply side effect e to each element.
abstract List<A>	eval()	Evaluate to a list.
abstract boolean	exists(Function<A,Boolean> p)	Check if at least one element satisfies predicate p.
abstract Monadics.IteratorMonadic<A>	filter(Function<A,Boolean> p)	Retain all elements satisfying predicate p.
final <B> Monadics.IteratorMonadic<B>	flatMap(Function<A,Iterator<B>> f)	Alias for bind(Function).
abstract <B> Monadics.IteratorMonadic<B>	fmap(Function<A,B> f)	Apply f to each element.
final <B> Monadics.IteratorMonadic<B>	map(Function<A,B> f)	Alias for fmap(Function).
abstract <B> Monadics.IteratorMonadic<B>	mapIndex(Function2<A,Integer,B> f)	Apply f to each element.
abstract Monadics.IteratorMonadic<A>	take(int n)	Limit iteration to the first n elements.
abstract Iterator<A>	value()	Return the wrapped iterator.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Method Details

map

public final <B> Monadics.IteratorMonadic<B> map(Function<A,B> f)

Alias for fmap(Function).

fmap

public abstract <B> Monadics.IteratorMonadic<B> fmap(Function<A,B> f)

Apply f to each element.

mapIndex

public abstract <B> Monadics.IteratorMonadic<B> mapIndex(Function2<A,Integer,B> f)

Apply f to each element. The function also receives the element's index.

flatMap

public final <B> Monadics.IteratorMonadic<B> flatMap(Function<A,Iterator<B>> f)

Alias for bind(Function).

bind

public abstract <B> Monadics.IteratorMonadic<B> bind(Function<A,Iterator<B>> f)

Monadic bind. Apply f to each elements concatenating the results.

filter

public abstract Monadics.IteratorMonadic<A> filter(Function<A,Boolean> p)

Retain all elements satisfying predicate p.

exists

public abstract boolean exists(Function<A,Boolean> p)

Check if at least one element satisfies predicate p.

take

public abstract Monadics.IteratorMonadic<A> take(int n)

Limit iteration to the first n elements.

each

public abstract Monadics.IteratorMonadic<A> each(Function<A,Void> e)

Apply side effect e to each element.

eachIndex

public abstract Monadics.IteratorMonadic<A> eachIndex(Function2<A,Integer,Void> e)

Apply side effect e to each element. Indexed version of each(Function).

value

public abstract Iterator<A> value()

Return the wrapped iterator.

eval

public abstract List<A> eval()

Evaluate to a list.