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.

matrix3<T>::V_FCT_PTR fct

msvc++ .net 2003 is correct here -- that won't work because you are using the matrix3<T> template. You have to use typename when refering to a type nested inside a template defintion (unless you are using a specific instantiation of that template)

typename matrix3<T>::V_FCT_PTR fct

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!