From: dblack@...
Date: 2007-08-13T21:39:37+09:00
Subject: Re: first and last char

--1926193751-1951042972-1187008779=:9230
Content-Type: MULTIPART/MIXED; BOUNDARY="1926193751-1951042972-1187008779=:9230"

  This message is in MIME format.  The first part should be readable text,
  while the remaining parts are likely unreadable without MIME-aware tools.

--1926193751-1951042972-1187008779=:9230
Content-Type: TEXT/PLAIN; charset=X-UNKNOWN; format=flowed
Content-Transfer-Encoding: QUOTED-PRINTABLE

Hi --

On Mon, 13 Aug 2007, Bertram Scharpf wrote:

> Hi,
>
> Am Montag, 13. Aug 2007, 15:15:54 +0900 schrieb Stephan K=E4mper:
>> Am 13.08.2007 um 08:04 schrieb Bertram Scharpf:
>>
>> Well, here's something that should be a little bit less cycle intensive
>> (depending on how String#[](arg) is implemented):
>>
>> class String
>>    def last
>>     self[-1].chr
>>   end
>> end
>
> This is what I would have implemented, too.
>
> The difficult point is that it raises some questions:
>
>  - Should it return a Fixnum or a String of lenght 1?

If it ever gets added to Ruby, it will presumably be in 1.9/2.0, where
str[x] gives you a character anyway.  If it doesn't get added, then
everyone will write their own, hopefully in a safe way, and can do
whatever they like :-)

>  - Should it be able to return UTF-8 characters?
>  - Should I define String#shift and String#pop now?

There's already #chop.  I don't know whether there are plans for
#lchop or equivalent.


David

--=20
* Books:
   RAILS ROUTING (new! http://www.awprofessional.com/title/0321509242)
   RUBY FOR RAILS (http://www.manning.com/black)
* Ruby/Rails training
     & consulting:  Ruby Power and Light, LLC (http://www.rubypal.com)
--1926193751-1951042972-1187008779=:9230--
--1926193751-1951042972-1187008779=:9230--