From: Arlen Cuss <celtic@...>
Date: 2008-02-29T10:45:41+09:00
Subject: Re: constants defined in Kernel are also defined in Object?

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Hi,

On Fri, Feb 29, 2008 at 12:11 PM, Arlen Cuss <celtic@sairyx.org> wrote:

> The reason for that is since the top level namespace *is* an Object.
>

Just to clarify everything else, this is the reason why they're available on
every object. `Functions' defined on the top-level are actually *instance
methods of Kernel*. This means that they're *included* as instance methods
of Object, and hence of *every* object. Since Kernel is itself an Object,
and it has a metaclass which is by all means an Object, this means you can
even access them on Kernel as if they were module methods. Or any other
object.

>> def hi
>> puts "hi!"
>> end
=> nil
>> (class << Kernel;self;end).hi
hi!
=> nil
>> Kernel.hi
hi!
=> nil
>> hi
hi!
=> nil
>> 42.hi
hi!
=> nil
>>

Arlen

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