From: Jim Freeze <jim@...>
Date: 2001-12-09T03:13:17+09:00
Subject: [ruby-talk:27951] Module and object extend. Can someone please explain

Hi

Ok, I thought that I had done this in the past, but
now I cannot seem to get it to work.
Can someone explain how to extend an object and
access a Constant?

module M; C=2; def c; puts "c"; end; end
nil
irb(main):002:0> class A; end
nil
irb(main):003:0> a=A.new
#<A:0x19e818>
irb(main):004:0> a.extend(M)
#<A:0x19e818>
irb(main):005:0> a.c
c   # => good, this works
nil
irb(main):006:0> a.C
NameError: undefined method `C' for #<A:0x19e818> # => ??
        from (irb):6
irb(main):007:0> a::C  # => ?? How does a access C?
NameError: undefined method `C' for #<A:0x19e818>
        from (irb):7


Thanks
=========================================================
Jim Freeze
jim@freeze.org
---------------------------------------------------------
Today is a fine day for Ruby programming.
http://www.freeze.org
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