Hi Peter,

On 26/03/2019 18:01, Peter Levart wrote:
Would such method addition be worth it?

Here is the impl of Set.copyOf:

    static <E> Set<E> copyOf(Collection<? extends E> coll) {
        if (coll instanceof ImmutableCollections.AbstractImmutableSet) {
            return (Set<E>)coll;
        } else {
            return (Set<E>)Set.of(new HashSet<>(coll).toArray());
        }
    }

Best regards,

-- daniel

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