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模块的端审方法
原标题:Send instance method to module

鉴于以下模块,

module Foo
  def bar
    :baz
  end
end

def send_to_foo(method)
  # ...?
end

send_to_foo(:bar) # => :baz

在<代码>send_to_foo上应当采用何种代码,以便使最后一行的工作达到预期水平? (send_to_foo) 显然,这不是我如何执行;这只是使我所期待的更清楚。

我期望首先工作,但意思是,它不是。 如果该方法被定义为def self.bar/code>,但该方法没有。

最佳回答

简而言之,容易的方式

Foo.extend Foo # let Foo use the methods it contains as instance methods
def send_to_foo(method)
  Foo.send(method)
end

现在

irb> send_to_foo(:bar)
 #=> :baz
问题回答

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