I am trying to use map but it doesn't seem to be working. I tried doing it as : 

@cols[1 .. $#cols] = map(tr /[1,2]/[0,1]/, @cols)

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Also, do u think doing (i)split and getting the values as $id and @cols; then doing (ii)join to get the cols as scalar values so that we can do translate and then do (iii) split again to get the array value so that I can store it in the hash of arrays a good idea ?? for eg: 

my %data;
while (<DATA>) {
    next if /^id/;
    my ($id, @cols) = split; ## first split
    my $cols = join('',@cols); ## Join 
    @cols = split('',$cols); ## and then split
    push @{ $data{$id} }, \@cols;
}

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I am having second thoughts about this method as it may lead to slower process or it might not be a good programming practice. Please Advise.

In reply to Re^2: Hash of Arrays and File Operations by snape
in thread Hash of Arrays and File Operations by snape

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