01. Review of Last Lecture

• Last lecture we looked at:
  1. What regular expressions, or regexes, are
  2. Literal characters
  3. Character classes
  4. Alternation and grouping
  5. Metacharacters like "^", "$" and "."
  6. The "?", "+", "*" and "{min, max}" quantifiers
  7. Escaping characters
  8. Some other cool regex metasequences available in various tools
• So now - on to the new stuff!