The program below outputs String: <First string> Second string> Fourth string> Fifth string> All but the first "<" is missing. Any ideas? (On vc++7.1 using Boost 1.32.0.) Richard All opinions are mine and do not represent in any way the position of Dell Corporation. #include <ostream> #include <iostream> #include <string> #include <vector> #include <algorithm> #include using std::wstring; using std::wcout; using std::endl; using boost::lambda::_1; typedef std::vector<wstring> StringCollection; wstring gt(L"<"); std::wostream& operator << (std::wostream& out, StringCollection const& coll) { std::for_each(coll.begin(), coll.end(), out << gt << _1 << L"> "); return out; } int main(int, char*[]) { StringCollection s; s.push_back(L"First string"); s.push_back(L"Second string"); s.push_back(L"Fourth string"); s.push_back(L"Fifth string"); wcout << L"String: " << s << endl; return 0; }