From: John J Foerch <[email protected]> Subject: [Chicken-users] coops / override initialize-instance Date: Tue, 08 Mar 2011 16:30:32 -0500
> Hello, > > What is the recommended way to perform complex initialization of object > instances in coops? Say I need to initialize a certain slot based on > the values of other slots in the object. Is the initialize-instance > generic designed in a way that it is safe to do something like this: > > (define-method (initialize-instance (o <myobject)) > ;; initialization code here > ) > > or is it recommended to write a wrapper function like this: > > (define (make-myobject a b c) > (let ((o (make <myobject> 'a a 'b b 'c c))) > ;; initialization code here > o)) "initialize-instance" is the right way to do it. You just should make sure to use "call-next-method" before you you can refer to other slots, because the default method initializes all slots with their default values. cheers, felix _______________________________________________ Chicken-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/chicken-users
