いつもパッと出てこないので備忘録メモ 環境 $ ruby -v ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-darwin16] やり方 old_version = "1.0.0" new_version = "1.2.1" Gem::Version.create(old_version) < Gem::Version.create(new_version) # => true…