org.cactoos.iterable

Class ItemAt<T>

java.lang.Object

org.cactoos.iterable.ItemAt<T>

Type Parameters:

T - Scalar type

All Implemented Interfaces:

Scalar<T>

public final class ItemAt<T>
extends Object
implements Scalar<T>

Element from position in Iterable or fallback value if iterable hasn't this position.

There is no thread-safety guarantee.

Since:

0.7

Version:

$Id: d78416f2f57f1d212d1d3312c71120f32bf3c169 $

Author:

Kirill ([email protected])

Nested Class Summary

Nested classes/interfaces inherited from interface org.cactoos.Scalar

Scalar.NoNulls<T>

Constructor Summary

Constructors

Constructor and Description
ItemAt(Func<Iterable<T>,T> fallback, Iterable<T> source) Ctor.
ItemAt(int position, Func<Iterable<T>,T> fallback, Iterable<T> source) Ctor.
ItemAt(int position, Iterable<T> source) Ctor.
ItemAt(int position, Iterator<T> source) Ctor.
ItemAt(Iterable<T> source) Ctor.
ItemAt(T fallback, Iterable<T> source) Ctor.

Method Summary

Modifier and Type	Method and Description
T	value() Convert it to the value.

Methods inherited from class java.lang.Object

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

Constructor Detail

ItemAt

public ItemAt(Iterable<T> source)

Ctor.

Parameters:

source - Iterable

ItemAt

public ItemAt(T fallback,
              Iterable<T> source)

Ctor.

Parameters:

fallback - Fallback value

source - Iterable

ItemAt

public ItemAt(Func<Iterable<T>,T> fallback,
              Iterable<T> source)

Ctor.

Parameters:

fallback - Fallback value

source - Iterable

ItemAt

public ItemAt(int position,
              Iterable<T> source)

Ctor.

Parameters:

position - Position

source - Iterable

ItemAt

public ItemAt(int position,
              Iterator<T> source)

Ctor.

Parameters:

position - Position

source - Iterable

Since:

0.21

ItemAt

public ItemAt(int position,
              Func<Iterable<T>,T> fallback,
              Iterable<T> source)

Ctor.

Parameters:

position - Position

fallback - Fallback value

source - Iterable

Method Detail

value

public T value()
        throws Exception

Description copied from interface: Scalar

Convert it to the value.

Specified by:

value in interface Scalar<T>

Returns:

The value

Throws:

Exception - If fails