관리-도구
편집 파일: rational.rb
unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED require 'json' end defined?(::Rational) or require 'rational' class Rational def self.json_create(object) Rational(object['n'], object['d']) end def as_json(*) { JSON.create_id => self.class.name, 'n' => numerator, 'd' => denominator, } end def to_json(*) as_json.to_json end end