scan (/\w\w/): \w means Any letter, digit, or underscore : sub with regular expressions « String « Ruby






  1. Ruby
  2. String
  3. sub with regular expressions

scan (/\w\w/): \w means Any letter, digit, or underscore


"This is a test".scan(/\w\w/) { |x| puts x }








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1.Basic Special Characters and Symbols Within Regular Expressions
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4.To change the last two letters
5.scan is the iterator method you require:
6.scan(/../): . means Any character
7.Index string by regular expression