Date.year_of_era
You're seeing just the function
year_of_era
, go back to Date module for more information.
Specs
year_of_era(Calendar.date()) :: {Calendar.year(), non_neg_integer()}
Calculates the year-of-era and era for a given calendar year.
Returns a tuple {year, era}
representing the
year within the era and the era number.
Examples
iex> Date.year_of_era(~D[0001-01-01])
{1, 1}
iex> Date.year_of_era(~D[0000-12-31])
{1, 0}
iex> Date.year_of_era(~D[-0001-01-01])
{2, 0}