state_jacket:简单直观的状态机

StateJacket 直观的和 StateJacket通过隔离状态转换系统和状态机的关注点，提供了一种构建复杂状态机的直观方法。 安装 gem install state_jacket 例子 让我们为定义状态和转换（即状态转换系统）和状态机。 国家过渡制度 system = StateJacket :: StateTransitionSystem . new system . add :opened => [ :closed , :errored ] system . add :closed => [ :opened , :errored ] system . lock # prevent further changes system . to_h . inspect # => {"opened"=>["closed", "errored"], "closed"=>["opened",