On Sat, Feb 26, 2011 at 12:34 PM, Uri Guttman <u...@stemsystems.com> wrote:

> >>>>> "PK" == Parag Kalra <paragka...@gmail.com> writes:
>
>  PK> use strict;
>  PK> use warnings;
>  PK> while(<DATA>){
>  PK>     chomp;
>
> why are you chomping here when you add in the \n later?
>

 Agreed and corrected in the example at the bottom.


>  PK>     if ($_ =~ /NM_(\d+)/){
>  PK>         my $found = $1;
>  PK>         $_ =~ s/$found/$found:12345/g;
>
> many issues there. why do you test the match before making the s///? you
> can ALWAYS do an s/// as it will just fail if it doesn't match.
>

 Rectified in the example at the bottom.


>
> why are you doing s/// against $_? by default it does that.
>
>  PK>         print "$_\n";
>  PK>     } else {
>  PK>         print "$_\n";
>  PK>     }
>
> why are you printing the same thing in each clause? just print AFTER the
> change is made?
>

Big mistake. I accept it. Modified in the example at the bottom.


>
>
> why do you top post when you have been told to bottom post and edit the
> quoted email?
>

Sorry. Hope this reply is better and so as the following code:

use strict;
use warnings;
while(<DATA>){
        $_ =~ s/NM_(\d+)/$1:12345/g;
        print;
}

__DATA__
chr1    ucsc    exon    226488874       226488906       0.000000
-       .       gene_id "NM_173083"; transcript_id "NM_173083";
chr1    ucsc    exon    226496810       226497198       0.000000
-       .       gene_id "NM_173083"; transcript_id "NM_173083";
chr1    ucsc    exon    2005086 2005368 0.000000        +       .
gene_id "NM_001033581"; transcript_id "NM_001033581";
chr1    ucsc    exon    2066701 2066786 0.000000        +       .
gene_id "NM_001033581"; transcript_id "NM_001033581";



>
> uri
>


Thanks for the review

~Parag


>
> --
> Uri Guttman  ------  u...@stemsystems.com  --------  http://www.sysarch.com--
> -----  Perl Code Review , Architecture, Development, Training, Support
> ------
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