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Ch. 10.1.2: RegEx (Technicality & Characters (Escape (\) (Specifies…

- - - - Ex. \W for any non-alphanumeric character (like &$%*)
      - Ex. \w returns any alphanumeric character including numbers and letters (0-9, a-Z)
      - Ex. \d returns only digits
      - Ex. \D returns any character excluding digits, including upper/lowercase and dashes
  - - - Ex. To account for spelling "color" as "colour", can use "colou?r"
  - - - Ex. Anything but whitespace is "\S"
  - - - Ex. area codes in phone numbers
  - - - Ex. Put caret inside brackets
  - - - Ex. abc|abd