Re: [gobo-eiffel-develop] Developer Guidelines (first draft)

[Eric B. <er...@go...>]

Christian Couder wrote:
> 
> I would rather have a base class using error variables and a derived
> class (inheriting the base class) with exceptions.

The more I think about it, the more I like this solution.
In the parent class the postconditions do not state that
the operation succeeded and the error variable is set on
error, and in the heir class the postcondtions are
strengthened to state that the operation succeeded and
an exception is raised on error.

Berend, what's your opinion about this design? At least
it has the advantage of providing both programming
styles to the clients of this library. I didn't look
at the implementation of your library so I don't know
whether this may cause implementation problems or
involve too much work for you to modify your classes.

-- 
Eric Bezault
mailto:er...@go...
http://www.gobosoft.com