ruby - 在define_method中调用super时没有父类(super class)方法

当我覆盖已经存在的方法时，为什么会收到以下错误talk: super: no superclass method talk (NoMethodError)？

如何解决此代码以调用super方法？

这是我正在使用的示例代码

class Foo
  def talk(who, what, where)
    p "#{who} is #{what} at #{where}"
  end
end

Foo.new.talk("monster", "jumping", "home")

class Foo
  define_method(:talk) do |*params|
    super(*params)
  end
end

Foo.new.talk("monster", "jumping", "home")

最佳答案

它不起作用，因为您覆盖了#talk。尝试这个

class Foo
  def talk(who, what, where)
    p "#{who} is #{what} at #{where}"
  end
end

Foo.new.talk("monster", "jumping", "home")

class Bar < Foo
  define_method(:talk) do |*params|
    super(*params)
  end
end

Bar.new.talk("monster", "table", "home")

关于ruby - 在define_method中调用super时没有父类(super class)方法，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/13846339/