Regular Expression Examples Example:Description: /[Rr]uby/Match Ruby or ruby /rub[ye]/Match ruby or rube /[aeiou]/Match any one lowercase vowel /[0-9]/Match any digit; same as /[ ]/ /[a-z]/Match any lowercase ASCII letter /[A-Z]/Match any uppercase ASCII letter /[a-zA-Z0-9]/Match any of the above /[^aeiou]/Match anything other than a lowercase vowel /[^0-9]/Match anything other than a digit Character classes:
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