operator<< template error

[Q-bel]

Hello everybody out there I have a little problem while overloading the <<operator for a class Im doing (named Set) which uses templates. The line that specifically gives me an error is

template <typename Item>
ostream& operator<<(ostream& out, const Set<Item> &S)


the error it gives me is ::
bash-2.05b$ g++ setwithtemplates.cpp
setwithtemplates.cpp:25: warning: friend declaration `std: stream&
operator<<(std: stream&, const set<Item>&)' declares a non-template
function
setwithtemplates.cpp:25: warning: (if this is not what you intended, make sure
the function template has already been declared and add <> after the
function name here) -Wno-non-template-friend disables thi
z€K€ says:
s warning
/tmp/cc7w8oWB.o(.text+0x1d8): In function `main':
: undefined reference to `operator<<(std::basic_ostream<char, std::char_traits<char> >&, set<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > const&)'
collect2: ld returned 1 exit status






THANX

[progme]

The code you posted is correct but reading your error shows that the problem does not lie within that line. "warning: friend decleration of operator << declares a non-template function" that gives me the idea that in your class implementation of Set your decleration of the friend function does not match up with its definition. So check out the decleration and if you can't figure it out please post the class definition here.