From: 7stud -- <dolgun@...>
Date: 2007-09-09T15:06:42+09:00
Subject: Re: module_function :func  vs. MyModule.func?

7stud -- wrote:
> 
> module MyModule
>     def greet
>         puts "hello"
>     end
> end
> 
> module OtherModule
>     include MyModule
> 
>     module_function :greet
> end
> 
> OtherModule.greet


On p. 355 of "Programming Ruby (2nd ed)", there is the equivalent of 
this example:

module MyModule
    def greet
        puts "hello"
    end

    module_function :greet
end

MyModule.greet

As far as I can tell, in that example the module_function has no purpose 
since I could just as easily make this change:

module MyModule
    def MyModule.greet
        puts "hello"
    end
end

MyModule.greet

Is there any reason to use module_function in that example?


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