Thread: Can someone help me decipher this: typedef T (*V_FCT_PTR)(T);

I don't know if this should go in the game coding forum, but it is in reference to image processing/linear algebra, so maybe some of you have seen it.

This is previously developed code that I'm taking over. The old code was compiled with an old MS VC (6, I believe). I'm using MS VC .NET

In any case, it's a template class - the code looks a bit like this:

Code:

template<typename T>
class matrix3
{
public:
...
	typedef T (*V_FCT_PTR)(T);
...
};

template<typename T>
matrix3<T>& matrix3<T>::apply(matrix3<T>::V_FCT_PTR fct)  // line 202
{ ... }

but I'm getting this compile error:
matrix3.cpp(202): error C2146: syntax error : missing ')' before identifier 'fct'

Shouldn't 'fct' be a pointer to a function that takes a T as an argument and returns a T? Isn't this proper syntax?

I don't see the problem.

Anyone else have an idea?

::sigh:: answered my own question. I guess this MSVC doesn't like the scope resolution before the "V_FCT_PTR"

I'll leave this up for reference if anyone else comes across something like it.

well how 'bout that. You're right. This could be the cause of some of my other headache with this project.

Looks like I need to read up on templates.

Thanks!