3 ms·I agree. Listing 11 won't even compile as was_empty is declared const.by Jabbles 15y agoI agree. Listing 11 won't even compile as was_empty is declared const.jey 15y agoThat use of const is fine, as it's never modified after the initial value is assigned.erydo 15y agoNo, Jabbles is correct: look at listing 11. It's reassigned five lines down.jey 15y agoOops, I was looking at listing 8. Thanks.