Re^2: Match nothing in grep { ! // }

I'm writing a scraper and sometimes I need to exclude some data. As I said, doing:

$css->{xlink} //= ' ';
[download]

works in this case but it just doesn't seem like the right way to do this.

@{$ret->{link}} = grep { ! /$css->{xlink}/ } map { $_->{href} } $dom->
+find($css->{link})->each if ($css->{link});
[download]

Comment on Re^2: Match nothing in grep { ! // } Select or Download Code

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Re^3: Match nothing in grep { ! // } by McA (Priest) on Mar 14, 2013 at 09:21 UTC
IMHO my post should have helped you as it showed that you can extend the expression in the grep codeblock. But now we know a little more of your problem and I assume the following: If `$css->{xlink}` is defined and not empty you want to try a match. The otherwise clause is not obvious to me, but you can change it. E.g. `grep { $css->{xlink} && ! /$css->{xlink}/ }` [download] I hope I understood it right. McA	[reply] [d/l] [select]
Re^3: Match nothing in grep { ! // } by Anonymous Monk on Mar 14, 2013 at 09:58 UTC
I'm writing a scraper and sometimes I need to exclude some data. ... Well, that much (your desire) was clear from your original post, but its still not a question :) If you want to filter based on a regex, and a space isn't adequate, what is adequate? ?? if( sometingTrue ){ grep filter } else { no grep filter } Or were you after what McA wrote?	[reply]