I\'ve written tons of operator<<(std::ostream &, const T &) functions -- they\'re incredibly useful.
operator<<(std::ostream &, const T &)
I\'ve never written an operator
operator
I think stream extractor operators can be very useful when combined with STL algorithms like std::copy and with the std::istream_iterator class.
std::copy
std::istream_iterator
Read this answer to see what I'm talking about.