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Add IterableUtils.any() method #551

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Add IterableUtils.any() method #551

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16 changes: 16 additions & 0 deletions src/main/java/org/apache/commons/collections4/IterableUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -483,6 +483,22 @@ public static <E> E find(final Iterable<E> iterable, final Predicate<? super E>
return IteratorUtils.find(emptyIteratorIfNull(iterable), predicate);
}

/**
* Returns an {@link Optional} containing the first element in the
* {@code iterable}, or an empty {@code Optional} if the iterable is
* empty or null.
* <p>
* A {@code null} or empty iterator returns an empty {@code Optional}.
* </p>
*
* @param <E> the element type
* @param iterable the iterable to search, may be null
* @return an {@code Optional} containing the first element of the iterable or an empty {@code Optional} if the iterable is empty or null
*/
public static <E> Optional<E> any(final Iterable<E> iterable) {
return Optional.ofNullable(IteratorUtils.find(emptyIteratorIfNull(iterable), x -> true));
}

/**
* Shortcut for {@code get(iterator, 0)}.
* <p>
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