On Jan 7, 2008 12:25 PM, Peter Bailey <pbailey / bna.com> wrote:
> Robert Klemme wrote:
> > On 07.01.2008 19:06, Peter Bailey wrote:
> >>
> >> I get this from Ruby:
> >> sizer.rb:10: undefined method `to_f' for [["5100"]]:Array
> >> (NoMethodError)
> >
> > Your error is in using #scan (see the docs for details).
> >
> > This works better
> >
> > width    = info[/Image Width: ([0-9]{1,5})/, 1].to_f
> > ...
> >
> > Cheers
> >
> >   robert
>
> Thank you very much. Yes, that works perfectly. That whole square
> bracket thing you use there is new to me. When you say "see the docs,"
> what should I look for? For "String#scan" or for Regex. . . .?

You want to look at String#[]

Todd