I have been updating a library that allows you to pipe between functions that use the erlang result tuple convention.

Assuming you have a double function with the spec double(int()) :: {:ok, int()} and safe dividing function. safe_div(int(), int()) :: {:ok, int()} | {:error, term()}.

Ok now can be used to create a pipeline that looks very much like the native pipe operator.

      iex> {:ok, 6} ~>> safe_div(3) ~>> double
      {:ok, 4.0}

      iex> {:ok, 6} ~>> safe_div(0) ~>> double
      {:error, :zero_division}

I have opened a pull request for this new version and pushed a release candidate. Hopefully it’s now interesting to people.