[Ironpython-users] Binding problem with default parameters in public classes

[Slide]

What happens if it's an abstract base class instead of an interface?

On Mon, Aug 29, 2016, 03:25 Markus Schaber <m.schaber at codesys.com> wrote:

> Hi,
>
>
>
> Our tests recently caught a strange regression in our application. One can
> make existing scripts fail by changing an internal class to public.
>
>
>
> The attached program reproduces the issue. The problem is that the method
> has optional parameters, but those are only declared at the interface.
>
>
>
> Now, when the class changes from “internal” to “public”, IronPython binds
> directly to the public methods without considering the interfaces any more,
> and thus does not recognize the optional parameters.
>
>
>
> Now, the question is whether this could be considered a bug in IronPython,
> or whether it should be considered a bug to implement an interface method
> without replicating the default parameter values…
>
>
>
> Best regards
>
> Markus Schaber
>
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