Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

Re: Re: Adjacency List Processing in XML::Twig

by chipmunk (Parson)
on Aug 18, 2001 at 17:50 UTC ( #105912=note: print w/ replies, xml ) Need Help??


in reply to Re: Adjacency List Processing in XML::Twig
in thread Adjacency List Processing in XML::Twig

Changing the nested grep to a grep map would change the semantics of the code.

grep { grep { $_->text eq $search_text } $_->children } @data;
This nested grep returns a list of elements for which any child contains the search text.
grep { $_->text eq $search_text } map { $_->children } @data;
This grep map a list of individual children that contain the search text.

 

With a search for 'menlo park', the nested grep returns two elements; one has the children '<city>menlo park</city>' and '<city>palo alto</city>', and the other has the children '<city>atherton</city>' and '<city>menlo park</city>'.

The grep map, on the other hand, would just return '<city>menlo park</city>' and '<city>menlo park</city>'.


Comment on Re: Re: Adjacency List Processing in XML::Twig
Select or Download Code
Re: Re: Re: Adjacency List Processing in XML::Twig
by japhy (Canon) on Aug 18, 2001 at 17:55 UTC
    Oh, right. Sorry, princepawn, I misconstrued the purpose of that part of the code. That was silly of me.

    _____________________________________________________
    Jeff[japhy]Pinyan: Perl, regex, and perl hacker.
    s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://105912]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others romping around the Monastery: (8)
As of 2014-12-22 01:32 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    Is guessing a good strategy for surviving in the IT business?





    Results (110 votes), past polls