Method communicate

cpp-subprocess/subprocess.hpp:1287–1288

  { return comm_.send(msg); }

  std::pair<OutBuffer, ErrBuffer> communicate(const char* msg, size_t length)
  { return comm_.communicate(msg, length); }

  std::pair<OutBuffer, ErrBuffer> communicate(const std::vector<char>& msg)
  { return comm_.communicate(msg); }