On Tue, Dec 2, 2008 at 3:27 PM, Tracy Harms <[EMAIL PROTECTED]> wrote: > On this topic, I've been aware that my solution to the multiple > inheritance task at Rosetta Code is weak. It occurs here: > > http://www.rosettacode.org/wiki/Multiple_inheritance#J > > The fact that I don't use coinsert suggests that I'm not handling this > right. However, I want the creation-specific code for both parent > classes to be executed when an object of type CameraPhone is created, > and I think using coinsert in the manner you described would result in > only one being effective. (I don't see that the situation here would > be fixed using the "closure-based inheritance" I mentioned recently.)
coinsert only deals with inheritance, it does not deal with the delegation of constructors. Here's how I would implement CameraPhone, based on your entry, except that a CameraPhone is a Camera and a CameraPhone is a MobilePhone. coclass 'CameraPhone' coinsert 'Camera MobilePhone' create=: verb define create_Camera_ y create_MobilePhone_ y NB. creation details specific to a camera phone go here ) destroy=: verb define codestroy '' ) -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
