porges

    (match
      (list (> x y) (stringp foo) (oddp n))
      [(list #t     _             #t      ) (whatever)]
      [(list _      #t            _       ) (other-thing)]
      [(list #t     #f            _       ) (etc)])

    // lambda
    float retVal = 0;
    std::for_each(mb.cbegin(), mb.cend(), [&](item x) { retVal += item.price; });
    return retVal;

    // pure iterator
    float retVal = 0;
    for (auto it = mb.cbegin(); it != mb.cend(); ++it)
    {
        retVal += it->price;
    }

    return retVal;

    return std::accumulate(mb.cbegin(), mb.cend(), 0f,
        [](float acc, item x) { return acc + x.price; });