On Tue, Aug 27, 2002 at 01:20:32PM +0200, Q wrote:
> Greetings.
>
> Is there such a thing as mutlidimensional associative array ?
>
> FILE 1 ( Filename = 23_59_54_20_08_2002)
> =====
>
> FIELD1 FIELD2 FIELD3
> 20 40 60
>
>
> FILE 2 (Filename = 23_59_55_20_08_2002)
> =====
>
> FIELD1 FIELD2 FIELD3
> 30 20 45
You already got an answer from Felix, but let me feed you a bit more
information as base-knowledge:
perldoc perldsc
Read the "Perl Data Structures Cookbook". There you'll find a nice
overview about the stuff you need.
perldoc perlref
goes into far more detail, so take a look at that too.
You can take your approach and build a hash of hashes
my $stuff = {
'23_59_54_20_08_2002' => {
field1 => 20,
field2 => 40,
field3 => 60,
},
'23_59_55_20_08_2002' => {
field1 => 30,
field2 => 20,
field3 => 45,
}
}
my $value = $stuff->{$fname}{field2}; # gives '40'
or you could create an array of hashes:
my $stuff = [
{
filename => '23_59_54_20_08_2002',
data => {
field1 => ...
}
},
{
filename => '23_59_55_20_08_2002',
data => {
...
}
}
}
my $value = $stuff->[0]{field2} # gives '40'
For both methods, You could store the data in an array if the fieldnames
are of no interest to you:
my $stuff = {
'23_59_54_20_08_2002' => [ 20, 40, 60 ],
...
]
my $value = $stuff->{23_59_54_20_08_2002}[2] # guess what
and
my $stuff = [
{
filename => '23_59_54_20_08_2002',
data => [ 20, 40, 60 ],
},
...
];
my $value = $stuff->[0][1]; # ditto
It all depends on what you want to do with the final data. Do you want
to easily access single elements? That would be a candidate for hashes.
Do you want to iterate over your data to calculate statistics? Smells
like arrays...
And always remember: When it comes to complex data structures,
Data::Dumper is your friend...
--
Well, then let's give that Java-Wussie a beating... (me)
Michael Lamertz | +49 2234 204947 / +49 171 6900 310
Sandstr. 122 | [EMAIL PROTECTED]
50226 Frechen | http://www.lamertz.net
Germany | http://www.perl-ronin.de
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