matching a string in ruby with regex

Question

I'm pretty bad with regex... well I'm learning that is :)

I have the following line (which needs a regex guru's help):

'passenger (2.2.5, 2.0.6)'.match(//)[0]

which obviously doesn't match anything yet

I want to return the just the content of (2.2.5, so everything after the open parentheses and before the comma...

how would I do this?

Answer 1

'passenger (2.2.5, 2.0.6)'.match(/\((.*),/)[1]

if you use the $1 element it is the group that is found within the ( )

Answer 2

Beanish solution fails on more than 2 version numbers, you should use something like:

>> 'passenger (2.2.5, 2.0.6, 1.8.6)'.match(/\((.*?),/)[1] # => "2.2.5"

Answer 3

#!/usr/bin/env ruby

s = 'passenger (2.2.5, 2.0.6)'
p s.scan(/(?:\(|, *)([^,)]*)/).flatten    # => ["2.2.5", "2.0.6"]