Does anybody have a solution to implement delegation in goops? I have an object that implements the full behavior of interest. Say it's an employee object.
For whatever perverse reason, which I assure you is reasonable, I want to wrap the employee in another object. And, for the most part, it will act just like the employee, except in a few places. Let's say I want to have the employee masquerade as the CEO. The wrapper would implement a few methods like "title", "salary", etc. And, specifically, the wrapper doesn't need to know what all the other methods are, or what might be added later. Seems like a job for delegation. So, I looked at the goops MOP. "compute-applicable-methods" would let me decide when to delegate or not. But, "next-method" is implemented in such a way that it doesn't call "compute-applicable-methods". Though not perfectly clear to me why, next-method returned "no-method". "no-applicable-method" assumes that you will throw an exception. It does not let you substitute a method of your choosing. Specifically, it's result is discarded, and it appears to be approximately in the same place as "compute-applicable-methods" so you would get the same problems as above. _______________________________________________ Guile-user mailing list [email protected] http://lists.gnu.org/mailman/listinfo/guile-user
