Package org.cactoos.scalar

Class FirstOf<T>

java.lang.Object

org.cactoos.scalar.FirstOf<T>

Type Parameters:

T - Type of result

All Implemented Interfaces:

Scalar<T>

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

Find first element in a list that satisfies specified condition.

There is no thread-safety guarantee.

Since:

0.32

Constructor Summary

Constructors

Constructor	Description
FirstOf(Iterable<? extends T> src, Scalar<? extends T> fbck)	Constructor with default condition (always `true`).
FirstOf(Iterable<? extends T> src, T fbck)	Constructor with default condition (always `true`) and plain fallback.
FirstOf(Func<? super T,Boolean> cond, Iterable<? extends T> src, Scalar<? extends T> fbck)	Constructor.

Method Summary

Modifier and Type	Method	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

FirstOf

public FirstOf(Iterable<? extends T> src,
               T fbck)

Constructor with default condition (always `true`) and plain fallback.

Parameters:

src - Source iterable

fbck - Fallback used if no value matches

FirstOf

public FirstOf(Iterable<? extends T> src,
               Scalar<? extends T> fbck)

Constructor with default condition (always `true`).

Parameters:

src - Source iterable

fbck - Fallback used if no value matches

FirstOf

public FirstOf(Func<? super T,Boolean> cond,
               Iterable<? extends T> src,
               Scalar<? extends T> fbck)

Constructor.

Parameters:

cond - Condition for getting the element

src - Source iterable

fbck - Fallback used if no value matches

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