I’m trying to find a cleaner coding style for what I’ve got happening repeatedly in my code right now. This is looking very pyramid of doom -ish # Variables in scope %{ var1: var1, var2: var2, var3: var3} case function1(var1) do # Success case one {:ok, %{pattern1: _}} -> case function…

Kernel.SpecialForms — Elixir v1.20.2 Have you tried the with macro?

You have a tree of cases here (not one happy path, different leaves between both first level successes), so unless you move stuff into functions (anonymous or named) you’d probably need to stick with what you have.

Yes. I didn’t actually realize until it was pointed out to me that with with you can pass the results from one call into the next one. The catch is that the errors become more grouped together which in some cases is beneficial. It seems like with is probably the happy medium here. Thanks for the su…

Just for future searches, would you mind including the with version so we have a before and after?

Here’s a rough translation although not direct as in the original I’ve got two success cases where only the first one will match whereas in the translation both with (potentially) match. This is the general idea though: %{var1: var1, var2: var2, var3: var3} with {:ok, %{pattern1: _}} <- functi…

Cleaner alternative for nested case/cond/if statements?

Questions & Help Questions

preciz January 20, 2020, 12:32pm 2

Have you tried the with macro?