#include <array>
#include "A.h"
#include "printer.hpp"

template <typename Collection>
auto incrementIfPossible(Collection&& collection) {
    for (auto&& item : collection) {
        using Item = decltype(item);
        constexpr bool isMutable = !std::is_const_v<std::remove_reference_t<Item>>;

        if constexpr (isMutable) {
            ++item;
        }
    }
}

auto main() -> int {
    printLn("=== main begin ==========================");

    using Arr = std::array<A, 3>;

    incrementIfPossible(Arr {{ {3}, {5}, {7} }});

    const Arr carr {{ {9}, {11}, {13} }};
    incrementIfPossible(carr);

    printLn("=== main end ============================");
}