@JRubyMethod(name = "hash")
    public RubyFixnum hash(ThreadContext context) {
        Ruby runtime = context.runtime;

        long h = Helpers.hashStart(runtime, realLength);

        h = Helpers.murmurCombine(h, System.identityHashCode(RubyArray.class));

        for (int i = 0; i < realLength; i++) {
            IRubyObject value = eltOk(i);
            RubyFixnum n = Helpers.safeHash(context, value);
            h = murmurCombine(h, n.getLongValue());
        }

        h = hashEnd(h);

        return runtime.newFixnum(h);
    }