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方法
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類別公開方法

new(target, method)

來源：顯示 | 在 GitHub 上 

# File activesupport/lib/active_support/callbacks.rb, line 415
def initialize(target, method)
  @override_target = target
  @method_name = method
end

執行個體公開方法

expand(target, value, block)

來源：顯示 | 在 GitHub 上 

# File activesupport/lib/active_support/callbacks.rb, line 420
def expand(target, value, block)
  [@override_target || target, block, @method_name, target]
end

inverted_lambda()

來源：顯示 | 在 GitHub 上 

# File activesupport/lib/active_support/callbacks.rb, line 430
def inverted_lambda
  lambda do |target, value, &block|
    !(@override_target || target).send(@method_name, target, &block)
  end
end

make_lambda()

來源：顯示 | 在 GitHub 上 

# File activesupport/lib/active_support/callbacks.rb, line 424
def make_lambda
  lambda do |target, value, &block|
    (@override_target || target).send(@method_name, target, &block)
  end
end