macro fields_info(), to be used for logging

lib/util.ex

@@ -0,0 +1,9 @@
+defmodule Scopes.Util do
+
+  defmacro fields_info(fields) do
+    names = for {f, _, _} <- fields do f end
+    quote do
+      Enum.zip(unquote(names), unquote(fields))
+    end
+  end
+end

test/util_test.exs

@@ -0,0 +1,15 @@
+defmodule Scopes.UtilTest do
+  use ExUnit.Case, async: true
+
+  alias Scopes.Util
+  require Scopes.Util
+
+  describe "info:" do
+    test "fields" do
+      a = 17
+      b = 22
+      c = 42
+      assert [a: 17, b: 22, c: 42] = Util.fields_info([a, b, c])
+    end
+  end
+end