Method or

forge-core/src/main/java/forge/util/IterableUtil.java:31–35

Merges a collection of predicates into a single predicate, which requires the subject to match at least one of the component predicates.

(Iterable<? extends Predicate<? super T>> components)

     * which requires the subject to match at least one of the component predicates.
     */
    public static <T> Predicate<T> or(Iterable<? extends Predicate<? super T>> components) {
        if(components instanceof List && ((List<?>) components).size() == 1)
            return ((List<? extends Predicate<? super T>>) components).get(0)::test;
        return x -> any(components, i -> i.test(x));
    }

    public static <T> Iterable<T> filter(Iterable<T> iterable, Predicate<? super T> filter) {
        return () -> StreamSupport.stream(iterable.spliterator(), false).filter(filter).iterator();