Module#prepend実行結果

module_prepend.rb

[1] pry(main)> module Hoge
[1] pry(main)*   def say
[1] pry(main)*     p "hoge"
[1] pry(main)*   end
[1] pry(main)* end
=> :say
[2] pry(main)> module Fuga
[2] pry(main)*   def say
[2] pry(main)*     p "fuga"
[2] pry(main)*   end
[2] pry(main)* end
=> :say
[3] pry(main)> class Test
[3] pry(main)*   def initialize(name="")
[3] pry(main)*     self.class.prepend Object.const_get "#{name}"
[3] pry(main)*   end
[3] pry(main)* end
=> :initialize
[4] pry(main)> Test.new("Hoge").say
"hoge"
=> "hoge"
[5] pry(main)> Test.new("Fuga").say
"fuga"
=> "fuga"
[6] pry(main)> Test.new("Hoge").say
"fuga"
=> "fuga"
[7] pry(main)>