Re: subfile processing--readc & sflnxtchg

[email@xxxxxxxxxxxxxxxxxxx (James W Kilgore)]

Joel,

I'm hard pressed to think of a subfile record where we don't use READC and
SFLNXTCHG.

IMHO opinion, mirroring the subfile in an array sounds like a pre-subfile
technique.

Now as far as using CHAIN, if a panel has a "position to..:", binary halving 
thru
the subfile is a pretty quick lookup.

Hoofless in Seattle

Joel Fritz wrote:

> > -----Original Message-----
> > From: Stone, Brad V (TC) [mailto:bvstone@taylorcorp.com]
> > Sent: Wednesday, February 10, 1999 11:25 AM
> > To: 'MIDRANGE-L@midrange.com'
> > Subject: RE: subfile processing--readc & sflnxtchg
> >
> >
> > How were you taught to do it?  Read through the entire
> > subfile using CHAIN?
> > *shudder*
> >
>
> Yup. Shadow the subfile in an array or data structure and do whatever is
> necessary using the loop counter as an index and key.  It's not very hard.
> I'm sure there'd be a perceptible effect on response time if you had to read
> several thousand subfile records.  For a hundred or so, it looks
> instantaneous.
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