From: Josselin <josselin@...>
Date: 2006-11-18T01:50:09+09:00
Subject: ruby equivalent PHP function is_numeric?

After reading completely my Ruby book, I cannot find a function 
equivalent to the PHP  is_numeric? to test a String

myString.is_numeric?   (check only digits and dot character)   =>  
return true or false

does it exist ? or it's more complicated than that ? (need to build a 
regex... ?)

thanks

joss