Glicko.new_rating

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

new_rating(player, results, opts \\ [])

Specs

new_rating(
  player :: Glicko.Player.t(),
  results :: [Glicko.Result.t()],
  opts :: new_rating_opts()
) ::
  Glicko.Player.t()

Generate a new rating from an existing rating and a series (or lack) of results.

Returns the updated player with the same version given to the function.