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#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
 
void Print(int v)
{
    cout << v << endl;
}
 
void Print(double v)
{
    cout << v << endl;
}
 
template<typename FnT>
void Function(int v, FnT&& fn)
{
    fn(v);
}
 
int main() {
 
    Function(1, Print);
 
	vector<int> v = { 1,2,3 };
    for_each(v.begin(), v.end(), Print);
 
	return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:24:22: error: no matching function for call to ‘Function(int, <unresolved overloaded function type>)’
     Function(1, Print);
                      ^
prog.cpp:17:6: note: candidate: template<class FnT> void Function(int, FnT&&)
 void Function(int v, FnT&& fn)
      ^~~~~~~~
prog.cpp:17:6: note:   template argument deduction/substitution failed:
prog.cpp:24:22: note:   couldn't deduce template parameter ‘FnT’
     Function(1, Print);
                      ^
prog.cpp:27:39: error: no matching function for call to ‘for_each(std::vector<int>::iterator, std::vector<int>::iterator, <unresolved overloaded function type>)’
     for_each(v.begin(), v.end(), Print);
                                       ^
In file included from /usr/include/c++/6/algorithm:62:0,
                 from prog.cpp:2:
/usr/include/c++/6/bits/stl_algo.h:3763:5: note: candidate: template<class _IIter, class _Funct> _Funct std::for_each(_IIter, _IIter, _Funct)
     for_each(_InputIterator __first, _InputIterator __last, _Function __f)
     ^~~~~~~~
/usr/include/c++/6/bits/stl_algo.h:3763:5: note:   template argument deduction/substitution failed:
prog.cpp:27:39: note:   couldn't deduce template parameter ‘_Funct’
     for_each(v.begin(), v.end(), Print);
                                       ^

Standard output is empty