View Source Credo.Check.Readability.ParenthesesOnZeroArityDefs (Credo v1.7.10)

Basics

This check is enabled by default.

Learn how to disable it via .credo.exs.

This check has a base priority of low and works with any version of Elixir.

Explanation

Either use parentheses or not when defining a function with no arguments.

By default, this check enforces no parentheses, so zero-arity function and macro definitions should look like this:

def summer? do
  # ...
end

If the :parens param is set to true for this check, then the check enforces zero-arity function and macro definitions to have parens:

def summer?() do
  # ...
end

Like all Readability issues, this one is not a technical concern. But you can improve the odds of others reading and liking your code by making it easier to follow.

Check-Specific Parameters

There are no specific parameters for this check.

General Parameters

Like with all checks, general params can be applied.

Parameters can be configured via the .credo.exs config file.