Regex for parsing version number

Question

How can I write a regex for parsing version numbers. I want to match numbers like: 1.000, 1.0.00, 1.0.0.000 but not integers 1

Answer 1

Clarification: I'm assuming you want to parse the numbers, not just match them.

Why use regexes when a simple split will work just fine?

'1.3.4.*'.split('.') # => ['1', '3', '4', '*']

If you want to ensure that there is at least one dot in the string, check the array length to ensure it is larger than 1.