ITYM follow on from EXEC2. Or was Mike working on REX before EXEC2?
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Rupert Reynolds <rreyno...@cix.co.uk> Sent: Thursday, September 10, 2020 8:05 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: REXX true/false (was Constant Identifiers) Confused? Difficult to say--the brash nature of this debate is clouding things. There is an example above which uses something like ''00000001'B to initialise a variable. In Rexx, that is not a boolean value. Depending on which interpreter you use, it is either a byte with contents x'01', which might be printable in some character sets, or it's a string of seven characters '0', a character '1' and a character 'B'. The only numbers I've found thay work in boolean expressions are 1 and 0. There were always going to be compromises building an interpreted language to follow on from the EXEC interpreter on VM/SP. Rupert On Thu., Sep. 10, 2020, 03:06 CM Poncelet, <ponce...@bcs.org.uk> wrote: > Yes. My post-grad thesis was on PL/I - and on its being originally > called Fortran VI in 1962, then NPL in '64, then distributed as PL/I in > '66 together with OS/360. > > I wrote PL/I before Clist/CLIST and long before REXX. > > Confused am I? > > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
