From: Garret Kelly <garret.kelly@...>
Date: 2007-10-23T05:15:25+09:00
Subject: Mixing define_function and class methods

Hi,
I'm sure if I'm missing something fundamental, but when you run the
code below with comments intact it won't execute, claiming that:

../test.rb:13:in `something': undefined method `some_function' for
#<B:0x2b9c102564a8> (NoMethodError)
        from ../test.rb:30

When the comments are removed, the code will run. The thing I can't
understand is why, when the comments are in-place, the call to
some_function from within an instance of B doesn't work. Can anyone
point me in the right direction?

Thanks,
Garret

class A
    def self.some_function(param)
        puts "param: #{param}"
    end

#    def some_function(*args)
#        puts self
#        B.some_function(*args)
#    end

    def self.register(name, &block)
        define_method(name) do |*args|
            some_function("thing")
            block.call(args)
        end
    end

    def initialize
        puts "I'm a #{self.class}"
    end
end

class B < A
    register :something do |*args|
        some_function("something")
    end
end

b = B.new
b.something