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Arthur,

If I understand what you are doing, you could say something like ...

if %len( coldta ) < cwdth( #col );
coldta = %subst( '000000000000000' // "lots" of zeros
: 1
: cwdth( #col ) - %len( coldta )
) + coldta;
endif;

Whether this is easier to understand than an explicit loop, is a matter
of taste. I confess that I find neither way very transparent. Can
someone here give us a clearer solution?

Cheers,
Terry.


On Wed, 2009-03-25 at 11:01 -0400, Arthur Marino wrote:
This FOR loop is supposed to prefix the 'varying' character field
"coldta" with zeros so as to right-justify the value in the column's
defined field length. "i" is defined as 5i 0.

for i = 1 to (cwdth(#col)-%len(coldta));
coldta = '0' + coldta;
endfor;

Debug tells me:
cwdth(#col) = 5 (the column's defined field length)
coldta = '134' (%len(coldta)=3, I inserted an explicit calc to be sure)

"coldta" should wind up being '00134'.

I expect the loop to iterate twice (5 - 3). Yet, it does so only ONCE.
After the 'endfor' i = 2, not 3 as I'd expect, and coldta contains 0134
(only 4 bytes).

When I insert the calc "len = cwdth(#col)-%len(coldta);" and replace the
expression with "for i = 1 to len", it iterates twice, i = 3 after the
'endfor', and coldta=00134 (5 bytes).

Is there something I'm not getting about the evaluation of the
expression in the FOR loop? It certainly appears that 5 - 3 results in
1, not 2.

Thanks.

Arthur Marino

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