If you're like me, and you want to use regular expressions (they're very powerful) but keep forgetting the rules, try http://regexpal.com/

Quick Reference (on the RHS) gives most of the important rules.

If life gets desperate you can click on Near-complete reference at the bottom of the Quick Reference table.

Can I also add a recommendation for RegexBuddy. It's a slick, comprehensive tool to construct, decode, test and debug regular expressions in two dozen languages. It's commercial, but pretty cheap and well worth the money.

I also use the matching RegexMagic tool to construct arbitrarily complex regular expressions in the same range of languages. Between them, these tools eliminate the pain of regexes and save hours of tedious labour.

Cheers,

Russell Searle
Principal Consultant | Psicom | Melbourne, Australia

Thanks for the tip, Russell.