That clobbers the parent's $_. Fixed: 

sub get_oligo_seqs{
    my ($fh) = shift;
    my @seqs;
    while(my $rec = <$fh>){
        my @fields = split /\t/, $rec;
        my $oligos = $fields[1];
        push(@seqs,($oligos));
    }
    return @seqs;
}

[download]

This seems simpler to me: 

sub get_oligo_seqs{
    my ($fh) = shift;
    my @seqs;
    while(my $rec = <$fh>){
        push @seqs, ( split /\t/, $rec )[1];
    }
    return @seqs;
}

[download]

Why stop there? 

sub get_oligo_seqs{
    my ($fh) = shift;
    return map { ( split /\t/ )[1] } <$fh>;
}

[download]

In reply to Re^4: printing sub return values to a file by ikegami
in thread printing sub return values to a file by lomSpace

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