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Re^3: Remove node information by searching tag element

by MidLifeXis (Monsignor)
on Nov 23, 2011 at 14:11 UTC ( #939666=note: print w/replies, xml ) Need Help??

in reply to Re^2: Remove node information by searching tag element
in thread remove node information by searching tag element.

The basic process is still the same. You record what you have seen and make processing decisions based on that data.

doSomething($data) unless $seen{$key}++

Providing appropriate values for $key, doSomething(), and $data are left as an exercise for the reader.

Update: Perhaps I am misunderstanding your question. Please post what you expect to see as output given the provided input data.


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Re^4: Remove node information by searching tag element
by veerubiji (Sexton) on Nov 23, 2011 at 14:35 UTC

    Sorry still you didn't understand my problem I think, In the above input data as I provided, in that data number tag is same in first data node and third data node, but reaming information is different only number tag is same. I need to delete the entire node if number tag element is same in any node. I am printing $info into new file so before printing into new file I need to eliminate duplicate nodes by using number tag. I hope now you understand clearly, I posted my expected result also. can you suggest me.

      Given your output data, the approach I provided will do the job. $key should be the 'number tag element'. Don't add the results if you have already seen the number.

      This block of code illustrates the technique.

      my @data = qw( a b 3 d a f b ); my %seen; for ( @data ) { print $_, "\n" unless $seen{$_}++; } __DATA__ a b 3 d f

      You should be able to apply this technique to your problem space.


        hi I reeded total xml::libxml::reader; but how to extract specific element form resulting $info and how to compare this is repeated or not. please help me i am not able to implement.

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Node Type: note [id://939666]
[marioroy]: Thanks. Have learned a new thing in Perl.
[MidLifeXis]: Hmm, do NTC nodes timeout? I thought considerations were forever.
[stevieb]: ahhh yes, it *is* a ref. I had forgotten that. I too have learned something. I quit too!!

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