C++ function templates

Question

Is there a trick to using function templates in xcode (3)? I've got a template, and it type checks fine, but when it tries to link I get what looks like a really complicated "symbols not found" error.
I know that in some compilers, you need to do a preliminary step to get templates to compile correctly, in others you need to #include the .cpp file with the template defs into every .cpp file that uses one of hose defs, rather than just standard .h files.
Is there something similar in xcode?
thanks
Message was edited by: Brian Postow

Answer 1

If you put your code between two lines of:
{ code }
{ code }
without the spaces, it will print out nicely.
Remember, everything has to be inline. Try the following:
in PrefMaps.h
#ifndef GETPREF_TEMPLATE
#define GETPREF_TEMPLATE
template <class Pref>
inline short getPrefResIdFromIndex(map<int, Pref> prefMap, int index)
#endif
in PrinterCtl.c
typedef map<int, HPrinterInfo> Printers;
Printers printers;
getPrefResIdFromIndex(printers, getitemctl(SDPREQUESTITEM + i));
Usually, with function templates, you don't need the #define guards. They are more important with template classes. Still, it can't hurt.