From: Mauricio Fernandez <mfp@...>
Date: 2006-03-21T18:25:29+09:00
Subject: Re: iterate chars in a string

On Tue, Mar 21, 2006 at 05:58:50PM +0900, Robert Klemme wrote:
> jogloran wrote:
> >The thing I don't like about this behaviour is that an algorithm which
> >operates on containers and expects #each can't work immediately with
> >strings.
> 
> That's not true.  It just depends on what you consider to be the parts 
> of a string.  I'd agree that naturally one would expect characters to be 
> that - but "lines" is another option.  And that's the one that has been 
> chose by Matz.  It has some advantages, too, e.g. if you slurp in a file 
> into a single string and then want to iterate the lines.

Besides,

RUBY_VERSION                                       # => "1.8.4"
require 'enumerator'

def foo(x)
  x.each{|y| p y.chr}
end

str = "foo bar baz"
foo(str.enum_for(:each_byte))
# >> "f"
# >> "o"
# >> "o"
# >> " "
# >> "b"
# >> "a"
# >> "r"
# >> " "
# >> "b"
# >> "a"
# >> "z"

-- 
Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby