[boost] generalized arithmetic functors

From: Neal D. Becker (ndbecker2_at_[hidden])
Date: 2004-08-13 07:47:16

STL defines some common arithmetic operators, such as

template<typename T>
struct plus {
  T operator+(const T&, constT&);
};

There is a need for more general operators:
template<typename T1, typename T2, typename res>
struct plus {
  res operator+(const T1&, constT2&);
};

For example, std::complex<double> + double -> std::complex<double>.

Has there been any discussion on this issue?