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Last active September 15, 2022 15:01
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Illustrates forcing inclusion of a module by another included module in Ruby.
#!/usr/bin/env ruby
# From solution at https://stackoverflow.com/questions/73676857/guaranteeing-that-module-includer-classes-include-another-module-in-ruby.
module M1
def m1; puts 'M1 was included by M2.'; end
end
module M2
def self.included(including_class)
including_class.class_exec { include M1 }
end
end
class C
include M2
end
C.new.m1 # => M1 was included by M2.
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