From: Gennady Bystritsky <Gennady.Bystritsky@...>
Date: 2006-08-26T00:18:51+09:00
Subject: Re: Alternative to String#to_i ?

> >> On Fri, 25 Aug 2006, Jeremy Lizt wrote:
> >>
> >>> Thanks to everyone for the quick response. The Integer
> >> suggestion works
> >>> great, but I'll point out one wrinkle that I encountered:
> >>>
> >>> Integer nil # => 0
> >>>
> >>> That was a small surprise. (These zeros keep popping up 
> when you may
> >>> not expect them!) My little conversion method now works
> >> fine and looks
> >>> like this:
> >>>
> >>>  def string_to_i(str)
> >>>    if str.nil? then return nil else Integer str end
> >>>  rescue nil
> >>>  end
> >>
> >> I can't resist:
> >>
> >>    def string_to_i(str)
> >>      Integer(str) rescue nil unless str.nil?
> >>    end
> >>
> >> :-)
> >
> > Likewise ;-)
> >
> > def string_to_i(str)
> >  str and Integer(str) rescue nil
> > end
> 
> The only reason I like mine better than yours is that mine gives nil
> for false, whereas yours gives false.  (Possibly not a big problem in
> practice, though :-)

You win :-) -- I like yours too, acrually. Simply could not resist, as
you nicely put it ;-).

Gennady.