akaneko3

object Fact {
  implicit class RichInt(val n : Int) {
    def ! : Int = (1 to n).product
  }
}

akaneko3

module TakePrintLn (
  takePrintLn
) where

takePrintLn :: Int -> [String] -> IO ()
takePrintLn n = putStrLn . unlines . take n

akaneko3

class Integer
  def !
    (1..self).inject(1, :+)
  end
end

puts 3.! # => 6
puts 0.! # => 1

akaneko3

public class JapaneseCalendar {
  private String era;
  private String eto;
  private final String [] ETO_A = {"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"};
  private final String [] ETO_B = {"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"};

  public JapaneseCalendar(int year) {
    setEra(year);
    setEto(year);
  }