Calling Template function from class

Question

I now have a fixed code

template<class _Fn, class... _Args>
void Profiling::GetProfile(_Fn&& _Fx, _Args&&... _Ax)
{
    StartTime = clock();
    function<void()> f = bind(_Decay_copy(forward<_Fn>(_Fx)), _Decay_copy(forward<_Args>(_Ax))...);
    f();
    EndTime = clock();

}

But can not call from main using

Profiling VarTest;
VarTest.GetProfile(Test, 1, 5);

where Test is a function that takes two integers

void Test(int a, int b) {
    std::cout << a + b;
}

Thanks in advance.

Just call it directly.. etc `callable(std::forward(args)...)` — Hatted Rooster, May 03 '17 at 11:41
By not call i mean "Error 1 error LNK2019: unresolved external symbol "public: void __thiscall Profiling::GetProfile(void (__cdecl&)(int,int),int &&,int &&)" (??$GetProfile@A6AXHH@ZHH@Profiling@@QAEXA6AXHH@Z$$QAH1@Z) referenced in function _main " — Ashley Cusack, May 03 '17 at 11:57
See this: http://stackoverflow.com/questions/12573816/what-is-an-undefined-reference-unresolved-external-symbol-error-and-how-do-i-fix — NathanOliver, May 03 '17 at 12:05

score 0 · Accepted Answer · answered May 03 '17 at 13:06

0

So it seems, if you use template for a function parameter this needs to be in the header file, rather than the source file.

answered May 03 '17 at 13:06

Ashley Cusack

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Calling Template function from class

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