Deck for studying up on regular expressions. This was purposefully kept free of any styling etc as this is the actual deck I use for memorization and don't like distractions.

2. Regex syntax

3. /pattern/options
Regex syntax

4. A single character: a, b, or c

5. [abc]
A single character: a, b, or c

6. Any single character but a, b,
or c

7. [^abc]
Any single character but a, b,
or c

8. Any single character in the
range a-z

9. [a-z]
Any single character in the
range a-z

10. Any single character in the
range a-z or A-Z

11. [a-zA-Z]
Any single character in the
range a-z or A-Z

12. Start of line

13. ^
Start of line

14. End of line

15. $
End of line

16. Start of string

17. A
Start of string

18. End of string

19. z
End of string

20. Any single character

21. .
Any single character

22. Any whitespace character

23. s
Any whitespace character

24. Any non-whitespace character

25. S
Any non-whitespace character

26. Any digit

27. d
Any digit

28. Any non-digit

29. D
Any non-digit

30. Any word character (letter,
number, underscore)

31. w
Any word character (letter,
number, underscore)

32. Any non-word character

33. W
Any non-word character

34. Any word boundary character

35. b
Any word boundary character

36. Capture everything enclosed

37. (...)
Capture everything enclosed

38. a or b

39. (a|b)
a or b

40. Zero or one of a

41. a?
Zero or one of a

42. Zero or more of a

43. a*
Zero or more of a

44. One or more of a

45. a+
One or more of a

46. Exactly 3 of a

47. a{3}
Exactly 3 of a

48. 3 or more of a

49. a{3,}
3 or more of a

50. Between 3 and 6 of a

51. a{3,6}
Between 3 and 6 of a

52. Case insensitive option.

53. i
Case insensitive option.

54. Case insensitive option.

55. i
Case insensitive option.

56. make dot match newlines

57. m
make dot match newlines

58. ignore whitespace in regex

59. x
ignore whitespace in regex

60. www.rubular.com
Credit for content and a great
tool for practicing.