Here's a good start ( note link to tutorial on the left, but you'll want to install expresso as well )
http://www.ultrapico.com/Expresso.htm>I have little to no experience with RegEx's, so....
>
>1) Can someone show me how to use a regex to ensure that the first digit in a string is a non-negative number?
>
>2) A decent RegEx tutorial would be nice.
>
>Many thanks
Charles Hankey
Though a good deal is too strange to be believed, nothing is too strange to have happened.
- Thomas Hardy
Half the harm that is done in this world is due to people who want to feel important. They don't mean to do harm-- but the harm does not interest them. Or they do not see it, or they justify it because they are absorbed in the endless struggle to think well of themselves.
-- T. S. Eliot
Democracy is two wolves and a sheep voting on what to have for lunch.
Liberty is a well-armed sheep contesting the vote.
- Ben Franklin
Pardon him, Theodotus. He is a barbarian, and thinks that the customs of his tribe and island are the laws of nature.
