I am trying to write a function to print std::vectors as
template <class T>
void PrintVector(const std::vector<T> vec)
{
for(unsigned int j=0;j<vec.size();j++){ std::cout << vec[j] << "\t"; }
std::cout << "\n";
}
This works if I put in the main file of the project. However when I put it in an external file (e.g. functions.cpp and functions.hpp) as
File functions.hpp:
#ifndef functions_hpp
#define functions_hpp
#include <iostream>
#include <vector>
template <class T>
void PrintVector(const std::vector<T> vec);
#endif
File functions.cpp:
#include "functions.hpp"
template <class T>
void PrintVector(const std::vector<T> vec)
{
for(unsigned int j=0;j<vec.size();j++){ std::cout << vec[j] << "\t"; }
std::cout << "\n";
}
I receive the following compile error:
Undefined symbols for architecture x86_64:
"void PrintVector<int>(std::__1::vector<int, std::__1::allocator<int> >)", referenced from:
_main in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
All the other functions defined in functions.cpp work. How to solve this issue?
