RE: [jruby-user] Iterating over characters in a String ?

Have you taken a look at Rails' ActiveSupport::Multibyte? It builds some 
unicode aware methods on top of the standard string class. It looks to be the 
most complete unicode implementation for Ruby now, and there has been talk to 
provide a native JRuby implementation of Multibyte to speed up performance in a 
JVM.

http://www.fngtps.com/2006/10/activesupport-multibyte

Peter

-----Original Message-----
From: Leonel Gayard [mailto:leonel.gayard@xxxxxxxxx] 
Sent: Friday, November 16, 2007 9:46 AM
To: user@xxxxxxxxxxxxxxxxxx
Subject: [jruby-user] Iterating over characters in a String ?

I'm looking for some way to iterate over the characters of a String in
Ruby. Ruby's class String does not provide a method each_char, nor
does JRuby's class String. Instead, both provide method each_byte.

Now, Ruby does not do Unicode. What a shame for a language developed
in Japan ! Instead, it believes that the size of a char is 8
bits. Thus, Ruby thinks that Matz' name, which is 松本行弘, has 12
characters:

matz = '松本行弘'
matz.length  -> 12

Help. How do I translate the following Java method into JRuby ?

void m(String s) {
        for (int i = 0; i < s.length(); i++) {
                System.out.println(s.charAt(i));
        }
}

The following does *not* work in Ruby, because it outputs each byte,
instead of each letter.

def each_char(str)
  0...str.length do |i| puts str[i] end
end


---------------------------------------------------------------------
To unsubscribe from this list please visit:

    http://xircles.codehaus.org/manage_email