Basic HTML version of Foils prepared March 30 97

Foil 38 Predefined Character Classes in Regular Expressions
(Chapter 7 of the Llama Book)

From PERL4 Tutorial for CPS616 Computational Science for Information Age Course CPS616 -- February 1995. by Geoffrey C. Fox
1 \d digits [0-9]
2 \D NOT digits [^0-9]
3 \w word characters [a-zA-Z0-9_]
  • Really anything legal in a PERL variable name after $ % @ indicators of a variable
  • Note \b indicates break between \w and \W
4 \W NOT word characters [^a-zA-Z0-9_]
5 \s White Space [ \r\t\n\f]
6 \S NOT white space [^ \r\t\n\f]
in Table To:

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