Templated function and stl

This is a discussion on Templated function and stl within the C++ Programming forums, part of the General Programming Boards category; I defined a templated function as below: Code: template<class T> list<T *>::iterator FindInternalByID(list<T *> *_List, int _ID){ list<T *>::iterator i; ...

  1. #1
    Registered User
    Join Date
    Dec 2006
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    2

    Templated function and stl

    I defined a templated function as below:

    Code:
    template<class T>
    list<T *>::iterator FindInternalByID(list<T *> *_List, int _ID){
    	list<T *>::iterator i; 
    	for (i = _List->begin(); i != _List->end(); i++){
    		if ((*i)->GetID() == _ID){
    			return i;
    		}
    	}
    
    	return _List->end();
    };
    Compiler gives an error:
    error C2146: syntax error : missing ';' before identifier 'FindInternalByID'
    I tried some other definitions and found that if i dont return an iterator like the above, no error occurs.
    How can I correct this?
    Last edited by cemuzunlar; 12-24-2006 at 11:16 AM.

  2. #2
    Registered User
    Join Date
    Jan 2005
    Posts
    7,317
    You should prefix typenames based on templated types with the "typename" keyword.

    Also, have you included <list> and added an using directive or declaration for the std namespace?

    Finally, names with underscores followed by an uppercase letter (like _List) are reserved for the implementation. Don't mimic the naming style of your library implementation, stick to legal names.

  3. #3
    Registered User
    Join Date
    Dec 2006
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    2
    Thanks. "typename" fixed the error.

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