From: Bill Kelly <billk@...>
Date: 2002-01-22T07:06:17+09:00
Subject: Re: converting chars to numeric


From: "Mark Probert" <probertm@nortelnetworks.com>

> Can someone tell me if there is a nice way to do the following:
> 
>          s = "4567"
>          a = s[0]                # --> I want the value '4' not '54', the 
> ASCII value of 4
>          b = s[1]                # --> 5
>          a + b                   # --> 9
> 
> I can do this by saying
> 
>          a = s[0] - 48
> 
> though this seems a might ugly for ruby :-).


  a = s[0] - ?0      # at least eliminates the hardcoded 48

or

  a = s[0].chr.to_i

or even

  a = s[0..0].to_i   # though to me this one "looks" weird



Regards,

Bill