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
--
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