Why I Like Perl

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Multiple Matches

• '+' matches one or more items
  • /a+/ matches 'a'
  • or 'aa'
  • or 'aaaaaaaaaaaa'
• '*' matches zero or more items
  • /a*/ matches 'a'
  • or 'aaaaaaa'
  • or ''
  • or 'b'
• '?' matches zero or one items
  • /ab?/ matches 'a'
  • or 'ab'

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Slide 25 of 47