如何确定从elixir中导入了特定功能的模块 [英] How to determine from which module a specific function was imported in elixir

问题描述

通过在某个中间模块上调用 use 来包含多个外部模块时，是否有一种简单的方法来确定给定方法实际在哪个模块中定义？

When multiple external modules are included by calling use on some intermediate module, is there an easy way to determine in which module given method is actually defined?

例如：

defmodule ModuleB do
  def method_b do
  end
end    

defmodule ModuleA do
  # imports ModuleB implicitly
  use SomeModuleImportingModuleB

  def method_a
    # how to determine this is ModuleB.method_b?
    method_b
  end
end

推荐答案

我找到了一个对我有用的解决方案，方法是使用& 捕获函数，然后对其进行检查：

I found a solution that works for me, by capturing the function using & and then inspecting it:

def method_a
  IO.inspect &method_b/0 
  # outputs &ModuleB.method_b
  method_b
end

这篇关于如何确定从elixir中导入了特定功能的模块的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！