Programming >

• shortforms: Rx, regex, regexp

Comparison ∞

1. A word.

   • Ruby includes numbers as words.

2. One or more words.

   • Ruby includes numbers as words.

3. One or more numbers.

Notes ∞

• adding an i to the end of the string makes the regex comparison case insensitive.

• Inline comments are supported.

Regular expression resources ∞

• gatech Regular Expression Tutorial

  • (archive) (increment the URL)

• zytrax.com Info on Regular Expressions

Python ∞

(Python)

• Regular Expression HOWTO -- For Python

Perl ∞

(Perl)

• Regular Expressions in Perl

  • (archived)
  • Their older stuff has PDFs

Ruby ∞

(Ruby)

• http://www.rubular.com/

  • A regular expression testing web page.