First of all, you have a mistake in your code. The first line in your loop should be: 

  my @split_hit_total = split(/\s+/, $_);

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since $_ is your loop variable here, not $hit_total. (use strict is good for catching things like that, BTW!)

That said, to answer your question: repurpose your HoA so that it stores (for each $protein_ac) the lowest encountered iEvalue along with its corresponding range, rather than all ranges. E.g. instead of pushing the range, do this: 

  if(!defined($HoA_total_hits{$protein_ac}) || $HoA_total_hits{$protei
+n_ac}->{'iEvalue'} > $iEvalue) {
    $HoA_total_hits{$protein_ac}->{'iEvalue'} = $iEvalue;
    $HoA_total_hits{$protein_ac}->{'range_b'} = $range_b;
  }

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Untested in the absence of example data... and I've not had my morning brew yet, so apologies if this is obvious rubbish.

(Side note -- I turned your HoA into a HoH here, but didn't change the name. I'd advise against putting the type of a variable in its name anyway.)

EDIT: using the sample data from Re^2: How can I add an entry in a has of arrays based on numeric comparison?, here's what Data::Dumper has to say about the contents of $HoA_total_hits after running this: 

$VAR1 = {
          'I5EU07' => {
                        'range_b' => '232-824',
                        'iEvalue' => '3.4e-137'
                      }
        };

[download]

Does that look right?

In reply to Re: How can I add an entry in a has of arrays based on numeric comparison? by AppleFritter
in thread How can I add an entry in a has of arrays based on numeric comparison? by Anonymous Monk

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