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Re: slow regular expressions

by blokhead (Monsignor)
on Aug 08, 2006 at 05:37 UTC ( [id://566075]=note: print w/replies, xml ) Need Help??

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  1. or download this
    "aaaa" =~ /a*a*b/
  2. or download this
    "aaaa" =~ m/ (a*) (a*) (?{ print "Tried $`($1)($2)\n"; }) (?!) /x;
  3. or download this
    Tried (aaaa)()
Tried (aaa)(a)
...
Tried aaa()(a)
Tried aaa()()
Tried aaaa()()
  4. or download this
    24670925422945900903156716 (= 2e25)

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