org.cactoos

Interface Func<X,Y>

Type Parameters:

X - Type of input

Y - Type of output

All Known Implementing Classes:

AsyncFunc, ChainedFunc, Func.NoNulls, FuncOf, FuncWithFallback, IoCheckedFunc, RepeatedFunc, RetryFunc, SolidFunc, StickyFunc, SyncFunc, UncheckedFunc

public interface Func<X,Y>

Function.

If you don't want to have any checked exceptions being thrown out of your Func, you can use UncheckedFunc decorator. Also you may try IoCheckedFunc.

If you want to cache the result of the Func and make sure it doesn't calculate anything twice, you can use StickyFunc decorator.

There is no thread-safety guarantee.

Since:

0.1

Version:

$Id: bf5d0ee09de9d705e9c96d6e1abfacf649ace401 $

Author:

Yegor Bugayenko ([email protected])

See Also:

StickyFunc, UncheckedFunc, IoCheckedFunc

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	Func.NoNulls<X,Y> Func check for no nulls.

Method Summary

Modifier and Type	Method and Description
Y	apply(X input) Apply it.

Method Detail

apply

Y apply(X input)
 throws Exception

Apply it.

Parameters:

input - The argument

Returns:

The result

Throws:

Exception - If fails