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module Memoizable | |
module ModuleMethods | |
def memoize | |
puts 'memoize' | |
end | |
end | |
def self.included(descendant) | |
descendant.extend(ModuleMethods) | |
end | |
end | |
Class.class_eval do | |
def memoize | |
puts 'include memoizable' | |
include Memoizable | |
memoize | |
end | |
end | |
class B | |
memoize | |
memoize | |
end | |
# => | |
# include memoizable | |
# memoize | |
# memoize |
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