Re: [boost] Exception lib?

You can also do this: throw failed<read_error>() << wrap_errno(); Here, wrap_errno is a function that captures the current errno value, and returns it as an object of some type, which is then stored in the info sub-object of the exception being thrown. Of course, you can attach more stuff directly in the throw-expression, by following with more calls to operator<<. I would be interessted in your library. regards, Oliver