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Programming > Pascal Borland > Re: Binary data...
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Re: Binary databases

by winston19842005 <bjjlyates@[EMAIL PROTECTED] > Dec 22, 2007 at 09:17 AM

On 12/22/07 8:48 AM, in article 13mq5vi2bqc84a7@[EMAIL PROTECTED]
 "Joe"
<joe@[EMAIL PROTECTED]
> wrote:

> Jim Leonard wrote:
>> On Dec 18, 9:17 pm, Joe <j...@[EMAIL PROTECTED]
> wrote:
>>>> All programmers worth their salt start counting from 0.  The more
>>>> experienced a programmer you become, the more you'll understand why.
>>> Ok, do you have a way to tell when I database has 0 records in. That
way
>>> I would be able to tell the program what to do. That way I could avoid
>>> all these crashes
>> 
>> You maintain a variable that has a count of how many records exist.
>> For example, "NumRecords".
> 
> Ok, I guess no one is getting the idea here. Jim. I know that.
> 
> NumRecords:= filesize(U);
> 
> The line above returns all the records. You must remember that the first
> record starts at '0'. Not at 1. So my question is how to I tell if the
> (U) has one record or no records in it.
> 
> if (NumRecords = 0) then exit;
> 
> the line above by p***** the first record. The first record all ways
> starts at 0.
>

I think everybody understands you are not a programmer.

Question: What does filesize return for an empty file? If it returns 0 for
both an empty file and a file with 1 record, then you need another method
for determining if a file is empty, which probably exists.

Depends on your flavor of Pascal and/or available functions.
 




 23 Posts in Topic:
Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-14 16:55:33 
Re: Binary databases
Robert Riebisch <Rober  2007-12-15 20:20:22 
Re: Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-18 12:49:02 
Re: Binary databases
Jim Leonard <MobyGamer  2007-12-18 13:05:33 
Re: Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-18 22:17:41 
Re: Binary databases
"Jochen" <jo  2007-12-19 05:17:45 
Re: Binary databases
"Jason Burgon"   2007-12-19 09:58:51 
Re: Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-20 18:35:12 
Re: Binary databases
"Jochen" <jo  2007-12-22 15:22:05 
Re: Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-22 20:03:44 
Re: Binary databases
"Jochen" <jo  2007-12-23 06:47:49 
Re: Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-23 11:55:52 
Re: Binary databases
Jim Higgins <invalid@[  2007-12-23 23:48:54 
Re: Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-27 09:09:39 
Re: Binary databases
Jim Higgins <invalid@[  2007-12-27 15:38:12 
Re: Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-27 19:45:20 
Re: Binary databases
"winston19842005@[EM  2007-12-19 00:57:11 
Re: Binary databases
Jim Leonard <MobyGamer  2007-12-21 11:18:29 
Re: Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-22 08:48:19 
Re: Binary databases
winston19842005 <bjjly  2007-12-22 09:17:11 
Re: Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-22 20:05:32 
Re: Binary databases
Jim Leonard <MobyGamer  2007-12-24 10:34:36 
Re: Binary databases
Joe <joe@[EMAIL PROTEC  2007-12-27 09:12:16 

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