From: bbiker <renard@...>
Date: 2007-06-13T23:15:05+09:00
Subject: Re: Getting the last N bytes of a string:

On Jun 12, 3:59 pm, Lloyd Linklater <l...@2live4.com> wrote:
> > p 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.r_slice(0..9)
>
> What about this:
>
> def last_bytes(s, number_of_bytes)
>   if s.size > number_of_bytes then
>     return s.slice(s.size - number_of_bytes..s.size)
>   end
>   return s
> end
>
> p last_bytes('ABCDEFGHIJKLMNOPQRSTUVWXYZ', 10)
> p last_bytes('WXYZ', 10)
>
> this is the result:
>
> "QRSTUVWXYZ"
> "WXYZ"
>
> --
> Posted viahttp://www.ruby-forum.com/.

Sorry to come so late in the thread.

This seems to work fine for me.

irb(main):001:0> str = "now is the time for all good men to come"
=> "now is the time for all good men to come"
irb(main):002:0> str[-10..-1]
=> "en to come"

irb(main):001:0> str = "now is the"
=> "now is the"
irb(main):002:0> str[-10..-1]
=> "now is the"

So I really see no need for a special method to obtain the last x
bytes of a string.