readlines(*args) -> [String][permalink][rdoc][edit](?String sep, ?Integer limit, ?mode: Integer | String, ?flags: Integer, ?external_encoding: encoding, ?internal_encoding: encoding, ?encoding: encoding, ?textmode: boolish, ?binmode: boolish, ?autoclose: boolish, ?chomp: boolish) → Array[String] (Integer limit, ?mode: Integer | String, ?flags: Integer, ?external_encoding: encoding, ?internal_encoding: encoding, ?encoding: encoding, ?textmode: boolish, ?binmode: boolish, ?autoclose: boolish, ?chomp: boolish) → Array[String]-
IO.readlines(self.to_s, *args)と同じです。
[SEE_ALSO] IO.readlines