Unfortunately, that's only true when eq? produces #t, which probably isn't an issue when using eq? directly, but can be when using memq or similar. This benchmark suggests about a 10x speed difference when the symbols are different: http://pasterack.org/pastes/94877
Sam On Thu, Sep 17, 2015, 9:52 PM Robby Findler <ro...@eecs.northwestern.edu> wrote: > FWIW, if you use equal? in those cases, you'll get the same > performance behavior and you will have fewer eq?s to audit when things > go wonky. > > ;) > > Robby > > On Thu, Sep 17, 2015 at 8:36 PM, Neil Van Dyke <n...@neilvandyke.org> > wrote: > > Whew. :) I only rarely have a non-symbol use for `eq?`, but I use `eq?` > > heavily for symbols in everyday application code. > > > > Robby Findler wrote on 09/17/2015 09:27 PM: > >> > >> eq? on symbols is a special part of the specification and that seems > >> benign to me, all things considered. The "giant hash in the sky" that > >> makes sure that works isn't exactly trouble free, but we seem to have > >> it under control. > > > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Racket Users" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to racket-users+unsubscr...@googlegroups.com. > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
