But this is so much easier to read (note the liberal use of blank lines
making the conditions easy to spot):
LOOP
WHILE READNEXT ID
GOSUB PROCESS.REC
REPEAT
RETURN
PROCESS.REC:
************
READ RECORD FROM FILE,ID
ELSE RETURN
IF RECORD<FLD.1> NE COND1
THEN RETURN
IF RECORD<FLD.2> NE COND2
THEN RETURN
IF RECORD<FLD.3> NE COND3
THEN RETURN
RECORD<FLD.4> = 'PROCESSED'
WRITE RECORD TO FILE, ID
RETURN
(hopefully the mail list didn't screw with the formatting)
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Marco Manyevere
Sent: Friday, 30 November 2007 1:46 AM
To: u2-users@listserver.u2ug.org
Subject: Re: [U2] Deep and long indentations vs multiple exit points
<snip>
I had to look up the "CONTINUE" statement. In 25 years I've never used
it, and don't even remember seeing it used. Now I know what it does I
think it should be banned.
</snip>
I use CONTINUE all the time when processing records that must meet
multiple conditions in a loop. This way my code doesnt look like 'flying
geese'. I will write:
LOOP WHILE READNEXT ID
READ RECORD
FROM FILE, ID ELSE CONTINUE
IF RECORD<FLD.1> NE COND1 THEN CONTINUE
IF
RECORD<FLD.2> NE COND2 THEN CONTINUE
IF RECORD<FLD.3> NE COND3 THEN
CONTINUE
RECORD<FLD.4> = 'PROCESSED'
WRITE RECORD TO FILE, ID
REPEAT
instead of:
LOOP WHILE READNEXT ID
READ RECORD FROM FILE,ID THEN
IF
RECORD<FLD.1> EQ COND1 THEN
IF RECORD<FLD.2> EQ COND2 THEN
IF RECORD<FLD.3> EQ COND3 THEN
RECORD<FLD.4> = 'PROCESSED'
WRITE RECORD TO FILE, ID
END
END
END
END
REPEAT
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