Credo.Check.Warning.ExpensiveEmptyEnumCheck (Credo v1.6.0) View Source

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


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



list == []

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

not Enum.any?(enum, condition)

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.