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package org.guppy4j;

import java.util.stream.Stream;
import java.util.stream.StreamSupport;

import static org.guppy4j.Booleans.not;

/**
 * Static helper methods for iterable objects
 */
public final class Iterables {

    public static  Stream stream(Iterable iterable) {
        return StreamSupport.stream(iterable.spliterator(), false);
    }

    public static boolean exists(Iterable iterable) {
        return not(isNullOrEmpty(iterable));
    }

    public static boolean isNullOrEmpty(Iterable iterable) {
        return iterable == null || not(iterable.iterator().hasNext());
    }
}