On Tue, 24 Nov 2020, at 02:20, Al Ferguson wrote: > Performance reasons. Without the quotes REXX first interprets MVS as a > variable name
Are you sure? I thought that environment (after address) was one of the few places in REXX where quotes were unnecessary because what's typed there is regarded as a constant. And, that if you actually wanted a variable's value to be used, you'd have to code address value varname > Back in the MVS & MVS/XA Days, these types of performance optimizations > were actually quite noticeable. Even if what you said above was true, I doubt very much that capitalising the environment name would ever have make a measurable difference, bearing in mind how few times one would typically specify an address statement in a typical exec. > I similarly “always” capitalize REXX Key words, to save REXX from > having to spend cycles actually FOLDING then up. It's been years since I wrote any REXX on a mainframe, but I know I didn't uppercase my code back then ... and a quick look at current manuals shows sample code is sometimes in uppercase, and sometimes mixed case. Is this idea that uppercase REXX is more efficient something that everyone here accepts? -- Jeremy Nicoll - my opinions are my own. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
