de.unkrig.commons.lang.protocol

Interface Function<I,O>

Type Parameters:

I - The type of the parameter of FunctionWhichThrows.call(Object)

O - The return type of FunctionWhichThrows.call(Object)

All Superinterfaces:

FunctionWhichThrows<I,O,NoException>

public interface Function<I,O>
extends FunctionWhichThrows<I,O,NoException>

An entity that transforms a (non-null) "input value" into a (non-null) "output value".

IMPORTANT NOTICE:

When using this type in a variable, parameter or field declaration, never write

Function<input-type, output-type>

, but always

Function<? super input-type, ? extends output-type>

.

See Also:

FunctionWhichThrows.call(Object), {@code Transformer} -- similar to this interface, but transforms only non-null values into non-null values

Method Summary

Methods inherited from interface de.unkrig.commons.lang.protocol.FunctionWhichThrows

call