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A comment on Years in Common Lisp: 2022 in review. Parent comment
https://bugs.launchpad.net/sbcl/+bug/2002244
https://sourceforge.net/p/sbcl/sbcl/ci/06f1639e53e99365f48a1...
If you are calling a generic function you can sometimes avoid such checks by introducing methods specialized on the type NULL (which contains only NIL).
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https://bugs.launchpad.net/sbcl/+bug/2002244
https://sourceforge.net/p/sbcl/sbcl/ci/06f1639e53e99365f48a1...
If you are calling a generic function you can sometimes avoid such checks by introducing methods specialized on the type NULL (which contains only NIL).