From: tamouse mailing lists <tamouse.lists@...>
Date: 2012-12-06T10:44:12+09:00
Subject: Re: Extract number (float) from string

On Tue, Dec 4, 2012 at 1:50 PM, 7stud -- <lists@ruby-forum.com> wrote:
>   str.match(/[.\d]+/)[0].to_f

Interestingly, this works because of the way to_f interprets such things as:

".......".to_f # => 0.0
".0.0.0.0.0.".to_f # => 0.0

both of which will also be caught by the regexp.