Elixir Case Clause Errors from Changed Function Returns
Hit a tricky debugging scenario today that cost me more time than I’d like to admit. I accidentally changed a function’s return value from {:ok, atom} to just atom. Elsewhere in the code, I was calling that function with: with {:ok, atom} <- function() do # ... end After the change, this stopped working because there was no :ok tuple to match against. The confusing part? The error that showed up in the logs was a “missing case clause error” rather than something more obvious like a pattern match failure. ...