Hi :) On Fri 10 Mar 2017 10:07, l...@gnu.org (Ludovic Courtès) writes:
> I’d be in favor of something more conservative, notably because > ‘simple-format’ remains faster than ‘format’: Ah indeed. simple-format does appear to be much faster. Tested using: (define-syntax-rule (do-times count exp) (let lp ((n 0)) (when (< n count) exp (lp (1+ n))))) ,time (string-length (call-with-output-string (lambda (p) (do-times #e1e4 (format p "foo"))))) and for simple-format too, and when adding a ~a. Clearly the answer here is to work on improving the performance of "format" :) > 1. Remove ‘set!’ in (ice-9 format), which has always been a bad idea. This is *not* conservative. We would certainly break users' code with this. I know there's -Wformat but still :) > 2. For exception printers, use some autoload magic, just like we do > for the debugger. This is hard for boot reasons -- you might get an exception before you are able to load modules. Of course this doesn't happen in the normal case but it would make Guile hacking a bit harder. Still, perhaps it is possible. Andy
