View Source Credo.Check.Warning.ExpensiveEmptyEnumCheck (Credo v1.7.0)

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

explanation
Explanation

Checking if the size of the enum is 0 can be very expensive, since you are determining the exact count of elements.

Checking if an enum is empty should be done by using

Enum.empty?(enum)

list == []

For Enum.count/2: Checking if an enum doesn't contain specific elements should be done by using

not Enum.any?(enum, condition)

There are no specific parameters for this check.

Like with all checks, general params can be applied.

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