[Boost-users] [system] error_code vs error_condition

The rationale for Boost.system seems to me to be less than complete. It describes error_condition as a "portable abstraction" compared to error_code, what makes an error_condition more portable or more of an abstraction than error_code completely escapes me. Can anyone enlighten me? -- Jon Biggar Floorboard Software jon@floorboard.com jon@biggar.org