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Is there an equivalent for retrieving the name of a function just like like __MODULE__ retrieves the name of a Module in Elixir/Erlang?
Example:
defmodule Demo do
def home_menu do
module_name = __MODULE__
func_name = :home_menu
# is there a __FUNCTION__
end
End
EDITED
The selected answer works,
but calling the returned function name with apply/3 yields this error:
[error] %UndefinedFunctionError{arity: 4, exports: nil, function: :public_home, module: Demo, reason: nil}
I have a function :
defp public_home(u, m, msg, reset) do
end
The function in question will strictly be called within its module.
Is there a way to dynamically call a private function by name within its own module?
591
__MODULE__ is a compilation environment macros which is the current module name as an atom. Now you know alias __MODULE__ just defines an alias for our Elixir module. This is very useful when used with defstruct which we will talk about next.
Named Functions. An Elixir function is typically named, and is called a "named function". Functions are defined with the def keyword followed by a parameter list. A function also has a body containing the contents of the function. Like modules, the function body begins with the do keyword and ends with the end keyword.
This is the pipe operator. From the linked docs: This operator introduces the expression on the left-hand side as the first argument to the function call on the right-hand side. Examples.
Starting in elixir 1.2 there is an i command in iex that will list the type and more of any Elixir variable. If you look in the code for the i command you'll see that this is implemented via a Protocol.
▶ defmodule M, do: def m, do: __ENV__.function
▶ M.m
#⇒ {:m, 0}
Essentially, __ENV__ structure contains everything you might need.
163
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