18 Feb
2015
18 Feb
'15
5:17 p.m.
I love this loop construct. I was just talking to a friend the other day
about how nice the GO language is, but I lamented that no one has ever
copied the elegance of the single loop verb in COBOL.
On 2/18/2015 8:50 AM, Chuck Guzis wrote:
Is there any other language (save PL/I for obvious
reasons) that has
an equivalent to the COBOL PERFORM...THRU statement?
That one always struck me as being a bit offbeat. Example: Consider a
section of a program with 4 consecutive paragraphs, named PARA-1
through PARA-4. One can say in the same program:
PERFORM PARA-1 23 TIMES.
PERFORM PARA-1 THRU PARA-4.
PERFORM PARA-1 THRU PARA-2.
PERFORM PARA-2 THRU PARA-3 WITH TEST AFTER VARYING INDEX-1 FROM 10 BY
3 UNTIL FLAG-1 > 0.
It's that variable scope of a PERFORM that I don't recall seeing in
any other language.
--CHuck