[racket] History question about ?

From: Jon Zeppieri (zeppieri at gmail.com)
Date: Sun Sep 18 20:56:55 EDT 2011

That convention, according to Richard Gabriel, came from Muddle/MDL
(as did Zork) [page 11]:



On Sun, Sep 18, 2011 at 8:42 PM, Charlie Turner <charlicon at gmail.com> wrote:
> Common Lisp's convention w.r.t predicate names appears to be all about the p
> or -p suffixes. My question is: Did older lisps use the '?' convention
> before CL, or was Scheme the first to conventionalise the use of ? in
> predicates?
> Sorry for the off-topic question, I couldn't find any definitive answers
> online, and figured there's bound to be someone here that lived through the
> development.
> Thanks,
> Charlie.
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