I would like to propose the removal of the ability to use `Kernel.unless/2` with an `else`-clause.
This proposal is inspired by the seeming consensus between the most prominent style guides for Elixir, along with similar consensus in the most often cited style guides for Ruby (where this ability exists as well). Some examples for Elixir: - https://github.com/lexmag/elixir-style-guide#no-else-with-unless - https://github.com/christopheradams/elixir_style_guide#unless-with-else - https://github.com/rrrene/elixir-style-guide#no-unless-with-else Similar examples for Ruby: - https://github.com/rubocop-hq/ruby-style-guide#no-else-with-unless - https://github.com/airbnb/ruby#no-unless-with-else - https://shopify.github.io/ruby-style-guide/ I have not researched the topic to the degree that I can point to some scientific study regarding how comprehensible negated booleans are. However, if the style guides are an indicator of community preferences, then anywhere they are enforced, `unless-else` will likely be banned. I have nothing but intuition to go by when it comes to how many Elixir users are actually using style guides like the ones above (with or without automatic checking), but the people and companies I've worked with generally use these guides. Therefore, this proposal is mostly a question whether this one rule should be enforced everywhere, at the potential expense of those who don't care much about style guides. I guess that also opens discussion about whether other rules could receive similar treatment, but that's a discussion for a different thread. -- You received this message because you are subscribed to the Google Groups "elixir-lang-core" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elixir-lang-core/6fd77557-3080-496b-af5f-fe51cf9de79b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
