Re: COBOL ain't quite dead - yet !

In article <7isgg4lh42b61712dijr6otf1otsscuj92@xxxxxxx>,
Howard Brazee <howard@xxxxxxxxxx> wrote:
On Mon, 27 Oct 2008 20:44:59 -0600, "tlmfru" <lacey@xxxxxxx> wrote:

What was worse was PERFORMING a label and then, within the scope of that
PERFORM doing a GOTO to it as well. That isn't formally forbidden but
always struck me as a chancy thing to do. (It was a method used to
implement loops before PERFORM/END-PERFORM was available).

When I worked for EDS a decade or more ago, our published standard was
for each perform to be of a section that consisted of a paragraph and
an exit which wasn't used.

'... a section that consisted of a paragraph and an exit which hasn't been
used'; I'm not sure how to parse this.

A10532-BUILD SECTION.
A10533-BUILD-RTN.
....
A10533-BUILD-EXIT.
EXIT

B21855-VERIFY SECTION
B21855-VERIFY-RTN.
....
B21855-VERIFY-EXIT.

.... et and cetera... but with never a GO TO -EXIT to control flow? I can
see how this evolved out of SECTION-based programming and page-size and
tuning and swapping and such arcana... but never 'using' an exit denied a
programmer an alternative to a SEARCH (for those weeks when said
programmer finds that such a imperative is forbidden because someone
didn't understand it) in the Oldene Dayse when in-line PERFORMS hadn't
been implemented.

DD
.

Relevant Pages

  • Re: Is it possible to use the value of the PROGRAM ID within the source code?
    ... it is put where the programmer wants to say that ... this is the point at which the procedure will exit. ... An EXIT in its own paragraph may also ... It is useful to have a consistent standard for structuring programs. ...
    (comp.lang.cobol)
  • Re: Is it possible to use the value of the PROGRAM ID within the source code?
    ... it is put where the programmer wants to say that ... this is the point at which the procedure will exit. ... An EXIT in its own paragraph may also ... It is useful to have a consistent standard for structuring programs. ...
    (comp.lang.cobol)
  • Re: Para1 THRU Para2
    ... HB>>> The best way to exit a paragraph this way is with an EXIT ... r> putting everything in one sentence makes the nesting too deep. ... One has to look at this logically, and create a transformation ...
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  • Re: COBOL aint quite dead - yet !
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    (comp.lang.cobol)
  • Re: COBOL aint quite dead - yet !
    ... sometimes I will replace the EXIT. ... was via the last paragraph. ... In Cobol a label may be the target of a goto, a perform, a drop ...
    (comp.lang.cobol)