with {:step_1, {:ok, value}} <- {:step_1, fn_call(...)} I also use this pattern a lot :) To be fair, I'm not using this library everywhere. Only when case/wit

with {:step_1, {:ok, value}} <- {:step_1, fn_call(...)} I also use this pattern a lot :) To be fair, I'm not using this library everywhere. Only when case/with become hard to read. Or when I have a pipeline like: fetch_list_of_resources() |> Result.or_else(fn _ -> [] end) # ignore the error |> Stream.filter(&check_condition/1) |> Stream.map(&delete_resource/1) |> Result.collect() # fails at the first error |> Result.unwrap!() # raise if error ASAP |> Enum.map(&log_deleted_resource/1) It is IMHO easier to read, refactor and debug (with some well-placed IO.inspect). Before this library, I was copy/pasting `then(fn ... end)`. I don't like to repeat myself :)