9:20:37draHow can I configure my SBCL to not give me a warning when doing the (setq foo 42)?
9:23:55jdzdra: This does not seem to be an SBCL-specific question (and of course expecting people to watch youtube videos as an offer of problem context is offensive). But assuming you're talking about global variables read on about DEFPARAMETER and DEFVAR.
9:27:27drajdz: I didn't know that was offensive, sorry about that.
9:32:00jdzdra: It is up to you to spend as much time necessary to minimize the time others have to spend when trying to answer your questions. So the usual "when I do this, I get that, whereas I expected something else; my reading of this and that resource seem to support my expectation, so what am I missing" is the way to go. Also advertisements are offensive in general.