Re: UC - User Controlled opens

[Tim McCarthy <twmac@xxxxxxxxxxxxxx>]

I'm with Larry on this. As for the efficiency argument, I don't understand
that at all. RPG uses the same set of code to open all files whether
they're user defined opens or not. The extra required logic is little more
than a branch and return.

At 12:20 AM 10/2/98 -0400, you wrote:
>I strongly agree with John on this.  I have done this many times for the
>same reason, that being that you may never need one or more files so why
>bother opening them.
>
>However, I posed this question to John Sears. He stated flatly that he'd
>skip the required logic and let the system open them all at program
>startup.  He said it was more efficient but did not go into detail as to
>how or why.
>
>Hmmmmmmmm.
>
> Larry Bolhuis
> Arbor Solution, Inc
> lbolhui@ibm.net
>
>John Carr wrote:
>> 
>> I'd agree with Pete and Eric in your particular case.  However don't stop
>> using User Controlled opens completely.   If you have a file that may not
>> "Logically" be used for the whole duration of the program,  Only open it
>> once, the first time it's needed.  Like a file that is used only on an
>> error condition, or something like that.  We have subfiles that may sort
>> by 4 or 5 different logicals.  The user may (at anyone sitting) use only
>> 1 or 2 and may never use the others at all that session.   I open them
>> the first time the user uses that sort sequence and then leave them open.
>> 
>> Things like that there
>> 
>> John Carr
>> EdgeTech
>> Have Classes, will Travel
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