Logger v1.12.0

Logger.compare_levels

You're seeing just the function compare_levels, go back to Logger module for more information.
Link to this function

compare_levels(left, right)

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Specs

compare_levels(level(), level()) :: :lt | :eq | :gt

Compares log levels.

Receives two log levels and compares the left level against the right level and returns:

  • :lt if left is less than right
  • :eq if left and right are equal
  • :gt if left is greater than right

Examples 

iex> Logger.compare_levels(:debug, :warning)
:lt
iex> Logger.compare_levels(:error, :info)
:gt