> -----Original Message-----
> From: Chas. Owens [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 21, 2008 1:11 PM
> To: Kevin Viel
> Cc: beginners@perl.org
> Subject: Re: Hash of hashes?
<snipped>
> #! /usr/bin/perl
>
> use strict;
> use warnings;
>
> use Data::Dumper;
>
> #this needs a better more descriptive name #maybe
> %alleles_by_snp, I don't know your #domain well enough to
> make a better suggestion my %outer; while ( <DATA> ) {
> my ($snp, $genotype) = split;
> $outer{$snp}{$_}++ for $genotype =~ /(.)/g; }
>
> for my $snp (sort keys %outer) {
> my $count = keys %{$outer{$snp}};
> my $total;
> $total += $outer{$snp}{$_} for keys %{$outer{$snp}};
> print "snp $snp has $count different alleles and a
> total of $total\n"; }
>
> __DATA__
> 1 CC
> 1 CT
> 1 TT
> 1 NN
> 2 CC
Great! One of the keys to my uderstanding of this is the use of %{}. I
believe my mistake was that the piece inside should be the scalar
(reference) of usual or uncomplicated fashion, i.e. $outer{ $snp }.
You placed another little gem in here for me to digest:
> $outer{$snp}{$_}++ for $genotype =~ /(.)/g; }
I guess when I conceive of that by myself, I should move to the intermediate
mailing list :)
Many kind thanks,
Kevin
Kevin Viel, PhD
Post-doctoral fellow
Department of Genetics
Southwest Foundation for Biomedical Research
San Antonio, TX 78227
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