Re: [Boost-users] RES: How do I print a standard pair?

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In short, you'll have to define a global operator<< for type std::pair<T, U>:

template<typename CharType, typename T, typename U> std::basic_ostream<CharType>& operator<< (std::basic_ostream<CharType>& o, std::pair<T, U> mypair) { return o << "This is my way of printing a pair: first: " << mypair.first  << " and second: " << mypair.second; }

This is strictly forbidden by the standard AFAIK.

How can the standard forbid defining your own operators? The standard forbids putting things into std namespace.