在编译时constexpr的测试是否真实时，是否可以打印消息？类似于static_assert而不停止编译器。
constexpr Application::Mode SETUP_MODE = Application::Debug;
// Can I somehow test if the SETUP_MODE is debug for pragma message?
#pragma message("Application mode is set to Debug!")
static_assert(SETUP_MODE != Application::Debug,
"Application mode is set to Debug!"); // Can I somehow just print this message without aborting the compilation?