Path: csiph.com!news.nrbbs.org!border-4.nntp.ord.giganews.com!nntp.giganews.com!Xl.tags.giganews.com!local-4.nntp.ord.giganews.com!news.giganews.com.POSTED!not-for-mail NNTP-Posting-Date: Wed, 29 Jul 2026 19:55:43 +0000 From: steve g Newsgroups: comp.lang.lisp Subject: Re: Resources to learn common lisp? References: <874inbqdz7.fsf@mariorosell.es> <110a9pp$ckmk$6@dont-email.me> <110es1g$1kk17$1@dont-email.me> <110fj4q$1r13s$5@dont-email.me> <110guci$26cjr$1@dont-email.me> <110i789$2iqm8$7@dont-email.me> <110j4qk$2q1p4$1@dont-email.me> <110l0v9$3av52$1@dont-email.me> <110nf0q$3vra6$3@dont-email.me> <87y0gg62cx.fsf@nightsong.com> <110rfqf$142ot$1@dont-email.me> <111ne5o$vsm3$3@dont-email.me> <111pbk6$36pi7$1@dont-email.me> <87qzlqgiyx.fsf@gmail.com> <111t96n$6sqq$1@dont-email.me> <111tev9$8hea$1@dont-email.me> <111ti9v$9fsk$1@dont-email.me> <1124c30$2879p$7@dont-email.me> Date: Wed, 29 Jul 2026 15:55:43 -0400 Message-ID: <871pclvadc.fsf@gmail.com> User-Agent: Gnus/5.13 (Gnus v5.13) Cancel-Lock: sha1:McsCyC+ujlhWNeNF1CVHBg2DzGE= MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Lines: 13 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-rq5JlSXGjesLWTtw5Emg8CED1qIrMb+ZXXItTkcdwJHh4/VzIz/FDNdF5qHWyR6aicH+DhYH5YDIYUO!G9yj/bFp4sQ743vHDiiNkMdbHGSRq8s0zUxwYms18jAapDs= X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 Xref: csiph.com comp.lang.lisp:61234 Lawrence D’Oliveiro writes: > On Mon, 29 Jun 2026 10:44:15 -0000 (UTC), tfb wrote: > >> Obviously this is just the same as using eq for numbers being a bad >> idea in CL ... > > Luckily, that’s not a problem in Python, because it allows custom > overloads for standard operators like “==”, which can do the right > thing in a type-specific fashion. seriously; operating overloading? is there a performance issue? No of course not, it is done at runtime...