Where does "define_method" defined?

ruby-talk
1

Hello,

From Ruby library reference manual, It tells that "define_method" is an
instance method of "class Module < Object", but why the following call give
out "false"

Module.instance_methods.include? :define_method
=> false

Thanks,
Brian

2

Hi,

Yes, a +define_method+ method is an instance method of the +Module+ class,
as you said. However, the method is PRIVATE [1], so you can't find it by using
your code.
Please use following code instead.

(on ruby 1.9.2-p180)
Mocdule.private_instance_methods.include? :define_method
=> true

[1] http://ruby-doc.org/core/classes/Module.html#M000497

Regards,

···

--
NOBUOKA Yu

3

Thank you very much for you help.

Brian

···

2011/5/12 Y. NOBUOKA <nobuoka@r-definition.com>

Hi,

Yes, a +define_method+ method is an instance method of the +Module+ class,
as you said. However, the method is PRIVATE [1], so you can't find it by
using
your code.
Please use following code instead.

(on ruby 1.9.2-p180)
Mocdule.private_instance_methods.include? :define_method
=> true

[1] class Module - RDoc Documentation

Regards,
--
NOBUOKA Yu