From: Quintus <sutniuq@...>
Date: 2010-12-11T22:57:54+09:00
Subject: Re: different between the "::" and "."

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Am 11.12.2010 14:25, schrieb zuerrong:
> Hello,
> 
> class Myclass
>     def Myclass.hi
>          "hi"
>     end
>     def Myclass::hello
>          "hello"
>     end
> end
> 
> what's the difference between Myclass.hi and Myclass::hello here?
> 
> Thanks.
> 
> 

In your example they're just the same. But have a look at this:

- --------------------------------------
module Foo

  class Bar
  end

end

x = Foo::Bar.new #=> a new instance of Foo::Bar
x = Foo.Bar.new #=> error
- --------------------------------------

The :: operator is normally used to resolve namespaces--in your example
you used it for a class method which is perfectly fine although I think
this style is old-ish and not used widely anymore. I personally use the
point operator for calling methods on any objects. Classes are just
normal objects in Ruby, so why use a special syntax there?

Vale,
Marvin
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