From: "cardboard42@..." <cardboard42@...>
Date: 2007-07-26T00:35:03+09:00
Subject: Re: read variables from string

On Jul 25, 11:09 am, daniel <daniel.leuenber...@gmx.ch> wrote:
> Hi,
>
> I would like to extract an array of e.g. integers or floats from a
> string:
>
> s = "1234" -> [12,34]
> s = "12.413.423.7" -> [12.4,13.4,23.7]
>
> How can I use unpack for that? What format string do I need for the
> two examples above?
>
> Where can I find more examples of the unpack method, than in the ruby-
> doc.org?
>
> Thanks for your help
> Daniel

I don't really know how to use unpack, and I'm not positive it's
appropriate for this situation anyway.
This works though:

def extract str
  str.scan(/(\d{2})(\.\d)?/).collect { |a| a.join }
end

extract "1234" => ["12,"34"]
extract "12.413.423.7" => ["12.4","13.4","23.7"]

My regexp-fu is a little rusty so maybe there's a better way to do
that.

Bored at work today...
Ken