ruby入门_模块

module DemoModel
def foo1 # common method
puts "foo1. common method"
end

def self.foo2 # module method
puts "foo2. module method"
end
end

# here is error
# DemoModel.foo1
DemoModel.foo2

# -------------------------------------

# class with module
class DemoClass
include DemoModel
end

demo = DemoClass.new

demo.foo1

# -------------------------------------

# module with class
module DemoModel1
class DemoClass1
def foo3
puts "foo3."
end
end
end

demo1 = DemoModel1::DemoClass1.new

demo1.foo3