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Each object has its corresponding state, and each state corresponds to some corresponding behaviors. If an object has multiple states, there will be many behaviors. Then the judgment of these states and the behavior completed according to the states will lead to multiple conditional statements, and if a new state is added, the existing code needs to be changed. This kind of design obviously violates the principle of opening and closing, and the state mode is used to solve such problems.秦淼不料有人会到这里来，慌乱之下。在这部加拿大夏季剧集中，多伦多Hope-Zion医院的外科主任Charlie Harris（Michael Shanks）遭遇车祸后不省人事，让整座医院陷入混乱，他的未婚妻兼同事Alex Reid医生（Erica Durance）更是忧心如焚。Alex决心在新来的著名外科医生Joel Goran（Daniel Gillies）的帮助下拯救Harris的生命。与此同时，Harris的「灵魂」在医院里游荡，不知道自己真的变成了鬼魂，还是纯粹在幻想。总的来说，这既是一部常规医学剧（Alex和医院里的其他医生每天还要照常诊治病人），又是一部带有灵异色彩的幻想剧。剧名《拯救希望》共有三重含义：拯救Harris、拯救普通病人，拯救Hope-Zion这所医院。Huse Madhavji、Julia Taylor-Ross和Kristopher Turner参与演出。该剧的演员和制作班底大多来自加拿大本土剧集《雏鹰展翅》（Rookie Blue）。Following the crew of the patrol boat HMAS Hammersley, as they patrol the northern sea border of Australia. They have to deal with foreign fishermen poaching fish, smugglers and with political unrest in a neighbouring island state.本作是一部描写失去父母的三姐妹的日常生活的动画作品，乐趣在于本作出演的角色都是各位vtuber。这种可怕身高的男子，鬼倭毕生也没机会见到第二个。全新“闪耀五人组”带来了更多的时尚技巧、充满感情的形象转变，以及真挚动人的坦白。第五季则将前往费城。