On Wed, 17 Jul 2019 23:59:04 +0200, Bernd Oppolzer wrote: > >One program had a coding like this: > > IF 9 < ZZ < 20 THEN DO; > ... There's an argument here for strong typing, prohibiting comparing a boolean to a numeric without a cast.
> ... Obviously this is not what the coder intended; the coder must have had >a mathematics background. He (or she) apparently asked for > > IF (9 < ZZ) & (ZZ < 20) THEN DO; > ... I have used one language that supported the prior construct, with the mathematicians' semantic. I avoided using that. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
