From: joey eisma <joey_eisma@...>
Date: 2007-11-08T06:01:08+09:00
Subject: Re: :: and .

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thx everyone for the reply. for the fine examples (some i don't quite understand yet..) as i'm still in the very early stages yet..

can i assume that it's simplier to use . than :: for references to methods?

thanks!


----- Original Message ----
From: Alex Young <alex@blackkettle.org>
To: ruby-talk ML <ruby-talk@ruby-lang.org>
Sent: Wednesday, November 7, 2007 10:13:01 AM
Subject: Re: :: and .

joey eisma wrote:
> hi!
> 
> reading through some tutorial, i noticed the author would interchange using :: and . to call methods. i see they both give the same result.
> 
> i was wondering if there is any other difference between the two? (other than convenience maybe?). when would you use one over the other?
> 
In addition to the other answers, there's one place that you can only 
use '::' rather than '.', and that's when you're specifying that your 
constant should be searched for in the root namespace:

Bar = 42
module Foo
  Bar = 23
  def Foo.show
    p ::Bar
    p Bar
  end
end

Foo.show outputs:
42
23

-- 
Alex

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