Where is the methods method defined?

ruby-talk
1

Hi,

just curious where can I find definition of methods method ?

BasicObject.method(:methods).owner

=> Kernel

BasicObject.ancestors

=> [BasicObject] # ?? it does not inherit from Kernel class ??

BasicObject.method(:methods).source_location

=> nil

That looks inconsistent. Possible bug ?
ruby 1.9.3p327

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2

you are currently asking for the method of the class BasicObject.

BasicObject.singleton_class.ancestors
=> [Class, Module, Object, Kernel, BasicObject]

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3

Thanks for the replies. It's defined, a bit counter-intuitively, in
class.c.

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4

Hans Mackowiak wrote in post #1092344:

you are currently asking for the method of the class BasicObject.

BasicObject.singleton_class.ancestors
=> [Class, Module, Object, Kernel, BasicObject]

Ok, that would explain 'methods' method really comes from Kernel but
what about its definition ? For example at
Module: Kernel (Ruby 1.9.3) is not listed between
Kernel class methods.

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5

It is probably just a bit confused because the method definition is located in class.c, not object.c. I dunno tho.

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On Jan 15, 2013, at 04:36 , David Unric <lists@ruby-forum.com> wrote:

Hans Mackowiak wrote in post #1092344:

you are currently asking for the method of the class BasicObject.

BasicObject.singleton_class.ancestors
=> [Class, Module, Object, Kernel, BasicObject]

Ok, that would explain 'methods' method really comes from Kernel but
what about its definition ? For example at
http://www.ruby-doc.org/core-1.9.3/Kernel.html is not listed between
Kernel class methods.

6

Ok, that would explain 'methods' method really comes from Kernel but
what about its definition ? For example at
Module: Kernel (Ruby 1.9.3) is not listed between
Kernel class methods.

James

7

It does come from Kernel module.
See ruby/object.c at ruby_1_9_3 · ruby/ruby · GitHub

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On Friday, 18 January 2013 г. at 5:54, James Britt wrote:

>
> Ok, that would explain 'methods' method really comes from Kernel but
> what about its definition ? For example at
> Module: Kernel (Ruby 1.9.3) is not listed between
> Kernel class methods.

Class: Object (Ruby 1.9.3)

James