Dialyzer不知道：httpc

Question

我正在开发Elixir，使用Erlang内置的:httpc函数执行获取请求。

if {:ok, {status, header, body}} = :httpc.request(:get, {img, []}, [], []) do
  # ...
end

功能运行良好。然后，在运行混合透析器之后，它将返回错误：

:0:unknown_function
Function :httpc.request/4 does not exist.
________________________________________________________________________________
lib/vutuv/accounts.ex:301:guard_fail
Guard test:
_ :: {:ok, {_, _, _}}

===

false

can never succeed.
________________________________________________________________________________
done (warnings were emitted)

我把这行告诉Dialyzer跳过对功能的检查。

@dialyzer {:nowarn_function, get_gravatar: 2}

但是，错误仍然存​​在

:0:unknown_function
Function :httpc.request/4 does not exist.
________________________________________________________________________________
done (warnings were emitted)

Answer 1

此问题已在https://elixirforum.com/t/dialyzer-does-not-know-httpc/21622/3

中解决

将:inets添加到extra_applications中的mix.exs之后，一切都成功传递。