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缉毒警察骆翔在五年前的卧底行动中遇难假死，五年后改名换姓，冒充曾经的自己打入贩毒集团，在追求真相与面对自身命运的道路上冲破黑暗……Akkanee(guy)是一位便衣jing察，他一直在寻找一位叫kim的人，kim是他的同胞弟弟，在几年前离家出走。Padet(tar)是一位刑jing队长，也是Akkanee(guy)的好朋友，他发现了kim的尸体，被人枪击后抛弃在乡村荒野里。————大家端午节快乐。秦淼不安，轻声道：葫芦哥哥，你莫要听她吹，你和板栗哥哥明年准能考中。上个世纪七十年代末，谢家妈的亲生女儿进了罗家，成了罗家的宝贝千金，取名罗家宝。罗家妈的亲生儿子进了谢家，成了谢家的宝贝独苗，取名谢刚。罗家贫穷，一个馒头铺养活了一家六口。谢家富有，但身为出版社编辑的谢家妈唐素萍与两个女儿和谢刚却很难沟通。谢刚爱上了罗家宝，躲都躲不过的事却偏偏到了一起，两家人都被闹得天翻地覆，日子过得很不顺心。但最难受的还要数知根知底的两家老太太了。原本罗奶奶和谢奶奶生前约定，要守着这个秘密进坟墓的，可现在两家人闹到这个份上，活在后边的谢奶奶终于说出了掉包的真相。谢刚、罗家宝惊呆了。谢奶奶说：老天爷给当妈的两只手，就是让你走路的时候左手拉着儿子，右手牵着身边的女儿。Visitor pattern decouples the data structure from the operations acting on the structure, making the operation set relatively free to evolve. Visitor pattern is suitable for systems with relatively stable data structure and easy change of algorithm. Because visitor mode makes it easy to increase algorithm operation. If system data structure objects are easy to change and new data objects are often added, visitor mode is not suitable. The advantage of visitor mode is that it is easy to add operations, because adding operations means adding new visitors. Visitor mode centralizes the relevant behaviors into one visitor object, and its changes do not affect the system data structure. Its disadvantage is that it is difficult to add new data structures. -From Encyclopedia1: The color of the tag is different from that of the earlier version or that of the regular company. The blue color of the regular company is darker.