Is it possible to define structs at runtime

Questions / Help
, , , ,
8

Yes, you can create structs in runtime. Consider this code

def create_struct(name, fields) do
  defmodule name do
    defstrcut fields
  end
end

This is a dark magic, but there is no need to limit yourself, be expressive, break laws, make people be afraid of yourself and make them treat your code with fear and respect.

To match on such structs in runtime, consider something like

name = Case
create_struct(name, [x: 1, y: 2])
...
case something do
  %^name{} ->
    ...
end
3 Likes