From: Heesob Park <phasis@...>
Date: 2008-09-16T17:23:52+09:00
Subject: Re: get a portion of a utf8 encoded string

Hi,

2008/9/16 Marco <m@r.co>:
> hi all.
>
> ruby 1.8.5 (2006-08-25) [i386-linux]
>
>>> puts 'hällo'
> hällo
> => nil
>>> puts 'hällo'[0, 2]
> h▒
> => nil
>>> puts 'hällo'[0, 3]
> hä
> => nil
>>> require 'iconv'
> => true
>>> puts 'hällo'[0, 3]
> hä
> => nil
>>> puts 'hällo'[0, 2]
> h▒
> => nil
>>>
>
>
> The ä character is probably 2 bytes long, so puts 'hällo'[1, 1] returns only
> a "pice" of the ä character. Is there a way to make this work?
> 'hällo'[0, 2] should return -> hä
> and
> 'hällo'[0, 3] should return -> häl
>
> thanks
>
>
You can do it using regular expression :

 'hällo'.split(//u)[0, 2].to_s  -> hä

Regards,

Park Heesob