Module com.aoapps.lang

Package com.aoapps.lang.function

Class Functions

java.lang.Object

com.aoapps.lang.function.Functions

public final class Functions
extends Object

Utilities for working with Function and FunctionE.

See Also:

Function, FunctionE

Method Summary

Modifier and Type	Method	Description
static <T,R> Optional<R>	coalesce(T t, Function<? super T,? extends R>... functions)	Lazily evaluates a set of functions, returning the first non-null result or Optional.EMPTY when no result.
static <T,R,Ex extends Throwable> Optional<R>	coalesceE(T t, FunctionE<? super T,? extends R,? extends Ex>... functions)	Lazily evaluates a set of functions, returning the first non-null result or Optional.EMPTY when no result.

Methods inherited from class java.lang.Object

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

Method Detail

coalesce

public static <T,R> Optional<R> coalesce(T t,
                                               Function<? super T,? extends R>... functions)

Lazily evaluates a set of functions, returning the first non-null result or Optional.EMPTY when no result.

Returns:

The first non-null result or Optional.EMPTY when all return null

coalesceE

public static <T,R,Ex extends Throwable> Optional<R> coalesceE(T t,
                                                                           FunctionE<? super T,? extends R,? extends Ex>... functions)
                                                                    throws Ex extends Throwable

Lazily evaluates a set of functions, returning the first non-null result or Optional.EMPTY when no result.

Returns:

The first non-null result or Optional.EMPTY when all return null

Throws:

Ex extends Throwable