On Fri, 23 Jan 2026, at 04:34, Thomas Berg wrote:
> That helps. (I didn't found them when I googled by some reason, the search
> has degraded in later years...)
>
> (Although still no syntax for conditions, like that "If a not = b" don't
> work but "If not a = d" do! I miss IBMs syntax diagrams.)
There's possibly a difference between "If a <> b" (for 2 numbers, 2 strings,
maybe 2 objects?) and "If not (condition)" (for booleans?) - I don't know.
I think that I would clarify the intended meaning by writing
If not (a = d)
just as I might write
If (hot and sunny) or (rain and walking)
rather than
If hot and sunny or rain and walking
where operator precedence and/or strict left to right (or the reverse,
eg APL's right to left expression evaluation) would be enforced (by
the interpreter), but a human looking at it wouldn't instantly know
precisely what it meant.
I would expect that you could find secondhand textbooks on VBS, very
easily & cheaply on ebay or Amazon marketplace, or Abebooks.
--
Jeremy Nicoll - my opinions are my own.
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
