Ruby 1.9.2 Reference Manual > All Libraries > Builtin Library > class Rational > denominator

instance method Rational#denominator

denominator -> Integer

分母を返します。常に正の整数を返します。

[RETURN]

分母を返します。

例:

Rational(7).denominator       # => 1
Rational(7, 1).denominator    # => 1
Rational(9, -4).denominator   # => 4
Rational(-2, -10).denominator # => 5

[SEE_ALSO] Rational#numerator