Calling global method

ruby-talk
1

See code samples below. Notes:

  • the def test defines a private method in Object. This means that every
    object can call it on itself.
  • Defining the method means overriding the previous definition. From
    within the method you can access ‘super’, but not from without.
  • Module names should begin with capital letters.
  • Modules cannot be instantiated directly (only though a class), so you
    cannot access the superclass.test method (there simply isn’t a
    superclass).

HTH,

— CODE —

def test
p “in first test”
end

module Somemodule
def Somemodule::somemethod

TOPLEVEL_BINDING.send(:test)

# ugly hacks that also work:
Object.new.send(:test)
eval("test", TOPLEVEL_BINDING)

end

def Somemodule::test(call_super)
p “in somemodule::test”

# another option:
p super if call_super

end
end

Somemodule.somemethod

···

-----Original Message-----
From: Sean O’Dell [mailto:sean@celsoft.com]
Sent: Friday, 28 May 2004 10:24 AM
To: ruby-talk ML
Subject: Re: Calling global method

On Thursday 27 May 2004 16:37, Sean O’Dell wrote:

How do you call a global method from a module method where there is
another
module method that shares the name of the global method?

Perhaps that was too cryptic. Here’s an example:

def test
p “in first test”
end

module somemodule
def somemodule::somemethod
test()
end

def somemodule::test
p “in somemodule::test”
end
end

In somemodule::somemethod, I intended to call the global test method,
but I
ended up calling somemodule::test.

How do you call the outer global method in a case like this?

Sean O'Dell