我試圖使用Ruby模塊(mixins)。Ruby:模塊,要求包括
我有test.rb:
#!/usr/bin/env ruby
require_relative 'lib/mymodule'
class MyApp
include MyModule
self.hallo
end
和lib/mymodule.rb:
module MyModule
def hallo
puts "hallo"
end
end
很簡單的設置。但它不工作:(:?
ruby test.rb
test.rb:8:in `<class:MyApp>': undefined method `hallo' for MyApp:Class (NoMethodError)
from test.rb:6:in `<main>'
哪裏是我的錯誤