Ruby で楽に範囲のチェックをする - Qiita1.9.3p194 :228 > 10.between?(1, 10) => true 1.9.3p194 :229 > 11.between?(1, 10) => false 1.9.3p194 :230 > DateTime.parse('2012-10-01').between?(DateTime.parse('2012-01-01'), DateTime.parse('2012-12-31')) => true 1.9.3p194 :231 > DateTime.parse('2013-01-01').between?(DateTime.parse('2012-01-01'), DateTime.parse('2012-12-31')) => false Register as a new user and use Qiita more conveniently You get a
