On Tue, May 24, 2011 at 10:48, leppie <[email protected]> wrote: > On Tue, May 24, 2011 at 10:25 AM, Pierpaolo Bernardi > <[email protected]> wrote: > >> I use them, sometimes, when rewriting in scheme an algorithm >> written in imperative style in a foreign language. For example, >> when taking an algorithm from a book. >> >> Sometimes it's worth the time to translate the code in good style, >> and sometimes the time is missing. Luckily, with scheme we have >> the choice. >> >> Nevertheless, I'd prefer not to have these macros in the standard. >> And I'd strongly prefer not to have them in WG1 scheme. > > There are good reasons to use UNLESS and WHEN, especially in terms of > error checking.
The text written by me that you quote refers to WHILE and UNTIL macros, not to WHEN and UNLESS, about which I agree with you, and it seems also with everyone else which has expressed an opinion. Cheers P. _______________________________________________ Scheme-reports mailing list [email protected] http://lists.scheme-reports.org/cgi-bin/mailman/listinfo/scheme-reports
