Right, I almost never use ELSE IF. Partly, I suppose, that's a reaction
against the folks who carefully indented:
IF X>0
BLAH BLAH BLAH
ELSE
IF X>10
BLAH BLAH BLAH
ELSE
IF X>100
BLAH BLAH BLAH
ELSE
IF X>100
BLAH BLAH BLAH
ELSE
AND SO ON.
As we agreed, sure, I intend fanatically. But if indentation is going to go
in and in like that, I'll try ~very~ hard to find anther way of putting it.
SELECT is great.
Here's another one, though I think I have to consider it a foible, not a
great idea: I rarely use AND. Mostly if I need and, I use IF...THEN
IF...THEN. The reason is that sometimes I have to do those inside loops,
and if they're going to be executed millions of times it costs more cycles
to do this:
if x>10 and y<10 then ...
...than this:
if x>10 then if y<10 then ...
But I confess I usually do it even outside loops.
And of course sometimes the AND cannot work because sometimes the second
condition cannot be evaluated unless the first is true:
If Exists(Key, Collection, Result) Then If Result = "" Then ...
But that's a special case.
---
Bob Bridges, [email protected], cell 336 382-7313
/* The proverbial German phenomenon of the "verb-at-the-end", about which
droll tales of absentminded professors who would begin a sentence, ramble on
for an entire lecture, and then finish up by rattling off a string of verbs
by which their audience, for whom the stack had long since lost its
coherence, would be totally nonplussed, are told, is an excellent example of
linguistic pushing and popping. The confusion among the audience that
out-of-order popping from the stack, onto which the professor's verbs had
been pushed, is amusing to imagine, could engender. -from _Gödel, Escher,
Bach: An Eternal Golden Braid_ by Douglas R Hofstadter */
-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of
Seymour J Metz
Sent: Friday, June 18, 2021 13:04
In PL/I and REXX I eschew ELSE IF in favor of using SELECT statements.
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