I unfortunately have several macros left over from the original version of my library that employed some pretty crazy C. In particular, I have a series of macros that expect certain types to be passed to them. Is it possible to do something along the lines of:
static_assert(decltype(retval) == bool);
怎么辦?有什么聰明的選擇嗎?
是的，我知道宏很糟糕.我知道 C++ 不是 C，等等.
Yes I'm aware macros are bad. I'm aware C++ is not C, etc.
這是一些相關(guān)代碼，以及源文件.歡迎提出建議.原始問(wèn)題保持不變.
Here is some related code, and the source file. Suggestions are welcome. The original question remains the same.
推薦答案
我發(fā)現(xiàn)這是最干凈的，使用@UncleBens 建議:
I found this to be the cleanest, using @UncleBens suggestion:
#include <type_traits>
static_assert(std::is_same<decltype(retval), bool>::value, "retval must be bool");
