From: Joe Van Dyk <joevandyk@...>
Date: 2005-08-04T11:23:43+09:00
Subject: Re: regex question

On 8/3/05, Caleb Clausen <vikkous@gmail.com> wrote:
> Then there's always:
> 
> eval "filename"   #;)
> 
> which will have exactly the right semantics in your case.

Ah... I was trying to do instance_eval.  Why didn't that work?

> 
> On 8/3/05, David A. Black <dblack@wobblini.net> wrote:
> > Hi --
> >
> > On Thu, 4 Aug 2005, Joe Van Dyk wrote:
> >
> > > I have a file that contains the following contents:
> > >
> > > sw_corner = 1000,-1000
> > > ne_corner = -1000,1000
> > >
> > > I want to read that file and figure out what the sw_corner and
> > > ne_corner values are.  Here's my following attempt, but it looks ugly.
> > > How can I improve it?
> > >
> > > sw_corner = map_data.scan(/sw_corner = ([-\d]+),\s*([-\d]+)/)[0]
> > > ne_corner = map_data.scan(/ne_corner = ([-\d]+),\s*([-\d]+)/)[0]
> >
> > Here's one possibility, if you want them as integers:
> >
> > require 'scanf'
> >
> > map_data = <<EOM
> > sw_corner = 1000,-1000
> > ne_corner = -1000,1000
> > EOM
> >
> > format = "%*s = %d,%d"
> >
> > sw = map_data.scanf(format)
> > ne = map_data.scanf(format)
> >
> > puts "sw is #{sw.inspect},ne is #{ne.inspect}"
> >
> >
> > David
> >
> > --
> >
> >
> > David A. Black
> > dblack@wobblini.net
> >
> >
> 
>