Hi, The formatter currently accepts definitions of functions with no arguments (arity 0) with or without parens. This means that these two expressions are valid (format-wise) within the same codebase:
def main do end def main() do end To show real-life examples, I made a list of some functions in the Elixir codebase defined with or without parens: *Without parens:* - Kernel.node/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/kernel.ex#L711 - Regex.version/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/regex.ex#L215 - Keyword.new/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/keyword.ex#L111 - Map.new/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/map.ex#L150 - IO.ANSI.enabled?/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/io/ansi.ex#L42 - Port.list/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/port.ex#L294 - System.argv/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/system.ex#L200 - System.cwd/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/system.ex#L221 - System.cwd!/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/system.ex#L242 - All the /0 of System *With parens:* - Kernel.make_ref/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/kernel.ex#L618 - Kernel.self/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/kernel.ex#L803 - Access.all/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/access.ex#L613 - MapSet.new/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/map_set.ex#L57 - File.cwd/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/file.ex#L1353 - File.cwd!/0 - https://github.com/elixir-lang/elixir/blob/master/lib/elixir/lib/file.ex#L1373 Is this flexibility in the style intended? I'm probably nitpicking, but it would be nice if one style is enforced. The same applies for function specifications. -- 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 elixir-lang-core+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elixir-lang-core/665af8fd-45b0-411b-acb4-4ea03732f4f4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
