Jeff wrote: > I've got some functions implemented in C# that need to have optional, > defaulted parameters. So far I've been declaring them similar to: > > public object cursor(CodeContext context, > [Optional][DefaultValue(null)]object factory) > > However, if factory is not specified, instead of being set to null, > it's a System.Reflection.Missing instance. Removing the DefaultValue > or changing the order doesn't change the outcome. Is this expected > behaviour?
I think removing optional should give you the correct behavior - if that Works then yes it is the expected behavior :). I guess we're checking for Optional before DefaultValue and for Optional we are matching the reflection behavior of passing Missing.Value. It also gives you a way to disambiguate whether the user passed None/null or if they didn't provide the parameter. _______________________________________________ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
