From: RichardOnRails <RichardDummyMailbox58407@...>
Date: 2007-11-22T10:10:07+09:00
Subject: Re: False positives in editing data

On Nov 21, 1:53 pm, Alex Young <a...@blackkettle.org> wrote:
> RichardOnRails wrote:
> > On Nov 19, 2:23 am, Ryan Davis <ryand-r...@zenspider.com> wrote:
> <snip>
> >> Those evals are TERRIFYING.  Don't use them.
>
> > How else can you loop through $1, $2 ... without repetitive code?
>
> I don't think anyone has replied to this, so...
>
> This is what you've got:
>
> >   sName =~ /^([\d]+)?\.?([\d]+)?\.?([\d]+)?\.?/
>
> >   # Save match variables in n[1] ... n[MLN+1]
> >   n = Array.new
> >   (1..MLN+1).each { |i| eval  %{n[i] = $#{i}}  }
>
> You can get an equivalent for n with the String#match method:
>
> irb(main):001:0> name = "2.2.02Topic 2.2.2"
> => "2.2.02Topic 2.2.2"
> irb(main):002:0> m = name.match( /^([\d]+)?\.?([\d]+)?\.?([\d]+)?\.?/ )
> => #<MatchData:0x3a3a324>
> irb(main):003:0> m[1]
> => "2"
> irb(main):004:0> m[2]
> => "2"
> irb(main):005:0> m[3]
> => "02"
>
> You should be able to use that to get around your second eval, too.
>
> --
> Alex

Hi Alex,

> m = name.match( /^([\d]+)?\.?([\d]+)?\.?([\d]+)?\.?/ )

Thanks.

Best wishes,
Richard