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List:       perl-beginners
Subject:    Re: What is the meaning of $normalize->{$1}
From:       Freek de Kruijf <f.de.kruijf () gmail ! com>
Date:       2023-06-16 9:15:40
Message-ID: 2286210.ElGaqSPkdT () eiktum
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Op donderdag 15 juni 2023 22:31:31 CEST schreef Claude Brown:
> Is there any prior mention of "$normalise" in the script?

Only now I see the first mentioning of $normalize as:

$normalize = {}

The naming of it is quite confusing to me. More logically would have been 
"present".

Now I understand that it is a test to assure certain lines in the input file 
should not be present more than once.

> Assuming there isn't, most likely "$normalise->{$1}" is building out a
> hash-table with "$1" as the key and a value of 1 at each entry.  
> $normalise will be a reference to that hash.
> 
> To check if this is correct, do this sometime after this code:
> 
> use Data::Dumper;
> print Dumper($normalise);

Thanks a lot.

-- 

fr.gr.

Freek de Kruijf




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