I have the following piece of code where I'm using two template functions to access elements of a tuple. The print
function will have code that requires more files to be #include
ed and I don't want code bloating if I was to include it in a header, given that template functions are defined in a header. Is there a way I could move the function definitions into a cpp file and avoid recursive / duplicate inclusions?
#include <stdio.h>
#include <tuple>
#include <iostream>
template<std::size_t I = 0, typename... Tp>
inline typename std::enable_if<(I >= sizeof...(Tp)), void>::type
print(std::tuple<Tp...> &/*t*/) { }
template<std::size_t I = 0, typename... Tp>
inline typename std::enable_if<(I < sizeof...(Tp)), void>::type
print(std::tuple<Tp...> &t) {
std::cout << std::get<I>(t) << std::endl;
}
int main()
{
std::tuple<int, std::string, char> t = std::make_tuple(10, "Hello", 'A');
print<0>(t);
print<1>(t);
print<2>(t);
print<4>(t);
return 0;
}
question from:
https://stackoverflow.com/questions/65887116/template-function-defined-in-cpp-file 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…