Function cb

examples/todoapp/lib/server.js:158–165

(err)

    // Note this is safe, as restify ensures "next" is called
    // only once
    function cb(err) {
        if (err) {
            req.log.warn(err, 'unable to delete a TODO');
            next(err);
        } else if (++done === req.todos.length) {
            next();
        }
    }

    if (req.todos.length === 0) {
        next();