Method next

tests/utils/lists.cpp:164–179

    }
    
    bool next() override {
        
        // offer next permutation of the current combination
        if (std::next_permutation(sublist.begin(), sublist.end()))
            return true;

        // else generate the next combination
        if (std::next_permutation(featured.begin(), featured.end())) {

            prepareSublist();
            return true;
        }
        
        // else indicate generator is exhausted
        return false;
    }
};