libera/#lisp - IRC Chatlog

8:18:28 binarydigitz01 Hey folks, I am a lisp newbie and I wanted to ask a question of how would you got about to implement this feature: I want to create Multiple Screens in My current game. Usually what I did was create a base class for screen, then extended/implemented it as a super class for every screen I did, and override the base functions. I can do this the same way using defgeneric and defmethod, but I wanted to ask, is there a specific lisp wa

8:18:59 binarydigitz01 How would a lisper go about it?

9:38:03 mrcom Probably the same way. The biggest difference between CLOS and other object systems is that methods can specialize on multiple things, and there's syntatic sugar for wrapping a method around a base method.

9:39:43 mrcom i.e., when a "(defmethod :before ...)" finishes then CLOS automatically calls the primary method.

9:40:09 mrcom Oh, and you can change an object's class at any time.

9:41:59 mrcom binarydigitz01: ^

9:43:25 mrcom From a "headspace" standpoint, you'll need to internalize that a class definition does not include methods.

9:46:03 mrcom If you say "class triangle implements graphic-object", then what you're really saying is that you pinky-swear that, for all the graphic-object generic functions, there's a method that can do that for a triangle.

9:47:17 mrcom This will be easier to adjust to if you're coming from Go rather than C++.

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