[[Kategorie:Wissen]]
==Speicherfresser==
<pre>irb(main):001:0> ''.scan(/(((.*)+)*)+/)
(irb):1:in `scan': failed to allocate memory (NoMemoryError)
	from (irb):1:in `irb_binding'
	from /usr/local/lib/ruby/1.8/irb/workspace.rb:52:in `irb_binding'
	from :0</pre>
Funktioniert in Perl nicht, in den pcre-Manpages stand was genaueres... wer findets?

 /^(https?:\/\/)?[a-z0-9]+([\.\-\_=&\+\/\?]?[a-z0-9]+)+$/i
 /<(?:[^">]+|"[^"]*")+>/