<<Hope this helps >>
Very much. Thanks to all who responded.
http://ciips.ee.uwa.edu.au/~morris/Year2/PLDS210/hash_tables.html was
helpful as well.
Lou
----- Original Message -----
From: "Andy Ford" <[EMAIL PROTECTED]>
To: "Lou Olsten" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Wednesday, May 05, 2004 6:33 PM
Subject: Re: Hash Index
> A hash is a key value pair
>
> i.e. if you want a value for a unique key (in perl anyway) you can do
> this.......
>
> %status = (
> 1 => "true",
> 0 => "false"
> );
>
> If I have a variable that hold an integer such as
> $test = 1.... I can do the following.....
>
> if($status{$test} eq "true") {
> do something
> }
>
> I have passed the variable $test as a key to the hash %status, and it
> has returned a value for that unique key.
>
> It's very similar in mySQL
>
> I come from a C background and now working extensively in Perl - this is
> a very powerful feature.
>
> Hope this helps
>
> Andy
>
> On Thu, 2004-05-06 at 23:01, Lou Olsten wrote:
> > This one is more curiosity than a problem.
> >
> > I have read the docs about HASH indexes and how they are used, but I'm
> > just wholly unfamiliar with WHAT a HASH index is. I'm only familiar with
> > the term 'hash' as it relates to encryption. What exactly IS a hash
> > index?
> >
> > Just curious,
> >
> > Lou
> --
>
> perl -e 'print qq^;@) [###]^^qq^z\.MY{eLQ9^'
> in:control developer, Telindus, RG27 9HY
> DDI: +44 1256 709211, GSM: +44 7810 636652
>
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