Invoker is the caller (commander), Receiver is the caller (soldier), MyCommand is the command, which implements the Command interface, holds the receiving object, and looks at the implementation code:
The main purpose is to save a state of an object, In order to restore the object at an appropriate time, I think it is more vivid to call the backup mode. Generally speaking, assuming that there are various attributes in the original class A and A, A can decide the attributes to be backed up, memo class B is used to store some internal states of A, and class C is used to store memos and can only store, not modify and other operations. Make a picture to analyze it:
在未来，人的意识可以被数字化，并储存下来，当一具身体死亡，意识可以传输到另一个躯体上继续生存。数个世纪之后，士兵Takeshi Kovacs的意识被传输到地球，载入地球首富Laurens Bancroft的躯体里，调查他的死因。在这过程中，他逐渐意识到自己的过去并不是所想的那样。
Because the benefits are:
下厨烧菜，早已成了历史书的词语。
他越想越好笑：一个凶神恶煞般的将军，领着几个农家婆娘，堵在胡府门口一开骂，还不把半个京城的人都引来了，倒要看看那些知书识礼的诰命夫人如何应对。
你就该听青莲哥哥的话。
[Complaint] My trading station can only sell things once a day. Is this normal?
北宋仁宗年间，闻听开封府有人击鼓喊冤，兰桂坊女大厨胜男（姜鸿饰）策马飞奔去为民请命。柳明月（佘诗曼饰）乃居家过日子的妇道人家，家中有儿子和丈夫，虽与胜男出身不同、性格迥异，俩人最近都被莫名卷入连环命案。在开封府，一般断案是靠包大人（方舟波饰）和其手下得力助手南侠展昭（王翔弘饰），而北侠欧阳冬（欧阳震华饰）也是智勇双全的人物。自明月与胜男卷入命案之后，她们各展自身所长，帮助朝廷破案，仁宗帝下旨，封她们为“带刀女捕快”，成为包拯的左膀右臂，协助开封府衙。在展昭、公孙策（关菁饰）等人协作下，竟磕磕碰碰破了不少疑难案件。虽然在办案过程中笑话迭出，但正义与良知使她们担负起了除暴安良的使命。
钱明见他吃亏，分外高兴。
现在他们根本拿不动兵器，根本没有和楚军对战的勇气，即便出手了又能如何呢？难道能是楚国铁骑的对手？绝望之中，突然有人大喊一声：南方有缺口，没有楚军……绝望之中听到这样的呼喊，无疑是黑暗之中看到了一丝生的希望，急切地想要伸手去抓住。
Horrible Histories is back with a special episode delving in to the life and times of the world's most famous writer. Tom Stourton stars as the Bard, as we find out about his humble beginnings, his glove-making father and his early life as an actor. How did he climb to become a royal favorite? And what was it like to be in the audience of one of his plays, where fruit was thrown at the stage, it was illegal for women to act, and there were no toilets!?!
以伪装的身份爱上她，当危机来临，在感情和身份之间他该如何选择？
板栗和葫芦见两女亲密地手挽手，甚为诧异。
以夸张而幽默的方式，描绘了女主人公鲁一雪意想不到的爆笑第一次。曾经以为第一次是美好而难忘的，尴尬面前，第一次只剩难忘还有悲催。鲁一雪急中生智，狗急跳墙，没有最糗，只有更糗。意外接连不断，尴尬愈演愈烈……
1949年后，陕甘宁地区特别是甘肃地区虽已解放，但国民党残余势力领导者章世光坚持“抗拒起义，忠于总统”，纠集散兵游勇惯匪与当地土匪勾结，组织成一支势力强大的土匪武装，与原本就活跃在周边的数股悍匪相互勾结，杀害区、乡基层干部,抢劫人民财物,进行反动宣传,成为新中国的一大害。中共西北局和西北军区发出的剿匪工作指示，派出以周正阳和黄一飞为首的革命战士组成了一支英勇无敌的“擒狼队”前往围剿，力挽狂澜，打了一场场漂亮的伏击战，全歼了陕甘宁地区的土匪，为稳定西北局势做出了不朽的贡献。
或许是上天怜爱，想什么来什么，徐彤都不得不佩服自己的运气实在不错。
6. If the ship is equipped with several horns with a spacing of more than 100m, only one horn shall be used to sound the control and warning signals.
Fabric composition: regenerated polyester fiber, nylon, spandex
他将她骗出去，推下山崖，回来却谎称妻子失足掉下悬崖摔死了。
