de.vandermeer.skb.interfaces.transformers

Interface Collection_To_FirstElement<T>

All Superinterfaces:

CategoryIs, Function<Collection<T>,T>, IsTransformer<Collection<T>,T>, Transformer<Collection<T>,T>

public interface Collection_To_FirstElement<T>
extends IsTransformer<Collection<T>,T>

Takes a collection of things and returns the first non-null element of it.

Since:

v0.0.1

Version:

v0.0.1 build 170404 (04-Apr-17) for Java 1.8

Author:

Sven van der Meer <vdmeer.sven@mykolab.com>

Method Summary

Modifier and Type	Method and Description
static <T> Collection_To_FirstElement<T>	create() Creates a new transformer.
default T	transform(Collection<T> collection) Transforms from one representation to another.

Methods inherited from interface Transformer

apply, transform

Methods inherited from interface Function

andThen, compose, identity

Method Detail

transform

default T transform(Collection<T> collection)

Description copied from interface: Transformer

Transforms from one representation to another.

Specified by:

transform in interface Transformer<Collection<T>,T>

Parameters:

collection - input representation

Returns:

output representation or null if input was null or unexpected class

create

static <T> Collection_To_FirstElement<T> create()

Creates a new transformer.

Type Parameters:

T - type for objects in the collection

Returns:

new transformer