{"rsdb":{"rid":"353428","subhead":"","postdate":"0","aid":"250726","fid":"78","uid":"1","topic":"1","content":"
\n

\u5207\u7247<\/h3> \n

\u7b80\u4ecb<\/strong><\/p> \n

\u3000\u3000\u7b80\u5355\u5730\u8bf4\uff0c\u5207\u7247\u5c31\u662f\u4e00\u79cd\u7b80\u5316\u7248\u7684\u52a8\u6001\u6570\u7ec4\u3002Go \u6570\u7ec4\u7684\u957f\u5ea6\u4e0d\u53ef\u6539\u53d8\uff0c\u800c\u5207\u7247\u957f\u5ea6\u662f\u4e0d\u56fa\u5b9a\uff0c\u5207\u7247\u7684\u957f\u5ea6\u81ea\u7136\u4e5f\u5c31\u4e0d\u80fd\u662f\u7c7b\u578b\u7684\u7ec4\u6210\u90e8\u5206\u4e86\u3002\u6570\u7ec4\u867d\u7136\u6709\u9002\u7528\u5b83\u4eec\u7684\u5730\u65b9\uff0c\u4f46\u662f\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u64cd\u4f5c\u90fd\u4e0d\u591f\u7075\u6d3b\uff0c\u56e0\u6b64\u5728Go\u4ee3\u7801\u4e2d\u6570\u7ec4\u4f7f\u7528\u7684\u5e76\u4e0d\u591a\u3002\u800c\u5207\u7247\u5219\u4f7f\u7528\u5f97\u76f8\u5f53\u5e7f\u6cdb\uff0c\u7406\u89e3\u5207\u7247\u7684\u539f\u7406\u548c\u7528\u6cd5\u662f\u4e00\u4e2aGo\u7a0b\u5e8f\u5458\u7684\u5fc5\u5907\u6280\u80fd\u3002\u5f53\u8fdb\u884cappend\u4e0ecopy\u51fd\u6570\u64cd\u4f5c\u65f6\u4f1a\u5bf9\u771f\u5b9e\u6570\u636e\u8fdb\u884c\u5185\u5b58\u62f7\u8d1d<\/span>
 <\/p> \n

\u521d\u59cb\u5316<\/strong><\/p> \n

\n 
package main\r\n\r\nimport "fmt"\r\n\r\nfunc main() {\r\n\t\/\/ \u7b2c\u4e00\u79cd\u65b9\u5f0f \u5bf9\u6bd4\u6570\u7ec4\u4e0d\u6307\u5b9asize\u5927\u5c0f\r\n\tvar slice1 = [] int{1,2,3,4}\r\n\t\/\/ \u7b2c\u4e8c\u79cd\u65b9\u5f0f\r\n\tslice2 := [] int{1,2,3,4}\r\n\t\/\/ \u7b2c\u4e09\u79cd\u65b9\u5f0f make\u751f\u6210\u7a7a\u5207\u7247\r\n\tvar slice3 []int = make([]int,3,5)\r\n\t\/\/ \u7b2c\u56db\u79cd\u65b9\u5f0f \u7b80\u5199 len=3 cap=5\r\n\tslice4 := make([]int,3,5)\r\n\r\n\tfmt.Println(slice1)\r\n\tfmt.Println(slice2)\r\n\tfmt.Println(slice3)\r\n\tfmt.Println(slice4)\r\n}\r\n\r\n\/\/[1 2 3 4]\r\n\/\/[1 2 3 4]\r\n\/\/[0 0 0]\r\n\/\/[0 0 0]\r\n<\/pre> \n <\/div> \n 
 <\/p> \n 
\u6570\u636e\u7ed3\u6784<\/strong><\/p> \n 
\u6211\u4eec\u5148\u770b\u770b\u5207\u7247\u7684\u7ed3\u6784\u5b9a\u4e49\uff0creflect.SliceHeader<\/code>\uff1a<\/p> \n 
 \n  
type SliceHeader struct {\r\n\t\/\/ \u6307\u5411\u6570\u7ec4\u5185\u5b58\u5730\u5740 \u8d4b\u503c\u65f6\u62f7\u8d1d\u7684\u662f\u6570\u7ec4\u5730\u5740\r\n\tData uintptr\r\n\t\/\/ \u957f\u5ea6\r\n\tLen  int\r\n\t\/\/ \u7533\u8bf7\u7a7a\u95f4\r\n\tCap  int\r\n}<\/pre> \n <\/div> \n 
\u53ef\u4ee5\u770b\u51fa\u5207\u7247\u7684\u5f00\u5934\u90e8\u5206\u548cGo\u5b57\u7b26\u4e32\u662f\u4e00\u6837\u7684\uff0c\u4f46\u662f\u5207\u7247\u591a\u4e86\u4e00\u4e2aCap<\/code>\u6210\u5458\u8868\u793a\u5207\u7247\u6307\u5411\u7684\u5185\u5b58\u7a7a\u95f4\u7684\u6700\u5927\u5bb9\u91cf\uff08\u5bf9\u5e94\u5143\u7d20\u7684\u4e2a\u6570\uff0c\u800c\u4e0d\u662f\u5b57\u8282\u6570\uff09\u3002\u4e0b\u56fe\u662fx := []int{2,3,5,7,11}<\/code>\u548cy := x[1:3]<\/code>\u4e24\u4e2a\u5207\u7247\u5bf9\u5e94\u7684\u5185\u5b58\u7ed3\u6784\u3002<\/p> \n 
 \"\"<\/p> \n 
 <\/p> \n 
\u8d4b\u503c\u3001\u5207\u7247\u4e0ecopy<\/strong><\/p> \n 
\u8d4b\u503c\u7b49\u540c\u4e8e\u628a\u7ed3\u6784\u4f53SliceHeader \u5185\u7684\u53d8\u91cf\u62f7\u8d1d\u4e86\u4e00\u4efd\uff0c\u5e76\u672a\u8fdb\u884c\u771f\u5b9e\u6570\u636e\u62f7\u8d1d\uff0c Data\u4e0e\u521d\u59cb\u5207\u7247\u6307\u5411\u7684\u662f\u540c\u4e00\u5757\u5185\u5b58\u5730\u5740<\/p> \n 
 \n  
package main\r\n\r\nimport "fmt"\r\n\r\nfunc main() {\r\n\ta := [] int{1,2,3,4}\r\n\tb := a\r\n\t\/\/ Data ptr\u6307\u5411\u7684\u5185\u5b58\u5730\u5740\u4e00\u81f4\r\n\tfmt.Printf("a[0] %p\\n",&a[0])\r\n\tfmt.Printf("b[0] %p\\n",&b[0])\r\n\t\/\/ \u4fee\u6539\u5143\u7d20\u503c\u76f8\u4e92\u5f71\u54cd\r\n\tb[0] = 10\r\n\tfmt.Println(a)\r\n\tfmt.Println(b)\r\n}\r\n\r\n\/\/a[0] 0xc000054140\r\n\/\/b[0] 0xc000054140\r\n\/\/[10 2 3 4]\r\n\/\/[10 2 3 4]<\/pre> \n <\/div> \n 
\u5207\u7247\u65f6\uff0c\u65b0\u751f\u6210\u7684\u5207\u7247Data\u6307\u5411\u521d\u59cb\u5207\u7247\u4f4d\u7f6e\u5143\u7d20\u7684\u5185\u5b58\u5730\u5740\uff0c\u5bf9\u5143\u7d20\u503c\u8fdb\u884c\u4fee\u6539\u65f6\uff0c\u76f8\u4e92\u5f71\u54cd<\/p> \n 
 \n  
package main\r\n\r\nimport "fmt"\r\n\r\nfunc main() {\r\n\ta := [] int{1,2,3,4}\r\n\tb := a[:]\r\n\t\/\/ \u5168\u5207\u7247\u65f6Data ptr\u6307\u5411a\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u5185\u5b58\u5730\u5740\r\n\tfmt.Printf("a[0] %p\\n",&a[0])\r\n\tfmt.Printf("b[0] %p\\n",&b[0])\r\n\t\/\/ \u4fee\u6539\u5143\u7d20\u503c\u76f8\u4e92\u5f71\u54cd\r\n\tb[0] = 10\r\n\tfmt.Println(a)\r\n\tfmt.Println(b)\r\n}\r\n\r\n\/\/a[0] 0xc000054140\r\n\/\/b[0] 0xc000054140\r\n\/\/[10 2 3 4]\r\n\/\/[10 2 3 4] <\/pre> \n <\/div> \n 
copy\u51fd\u6570\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u4f1a\u5bf9\u771f\u5b9e\u6570\u636e\u8fdb\u884c\u5185\u5b58\u62f7\u8d1d\uff0c\u65b0\u7684\u5207\u7247Data\u6307\u5411\u65b0\u7684\u5730\u5740<\/p> \n 
 \n  
package main\r\n\r\nimport "fmt"\r\n\r\nfunc main() {\r\n\ta := [] int{1,2,3,4}\r\n\tb := make([]int, len(a), cap(a))\r\n\tcopy(b,a)\r\n\t\/\/ Data ptr\u6307\u5411\u7684\u65b0\u7684\u5185\u5b58\u5730\u5740\r\n\tfmt.Printf("a[0] %p\\n",&a[0])\r\n\tfmt.Printf("b[0] %p\\n",&b[0])\r\n\t\/\/ \u4fee\u6539\u5143\u7d20\u503c\u76f8\u4e92\u4e0d\u5f71\u54cd\r\n\tb[0] = 10\r\n\tfmt.Println(a)\r\n\tfmt.Println(b)\r\n}\r\n\r\n\/\/a[0] 0xc000054140\r\n\/\/b[0] 0xc000054160\r\n\/\/[1 2 3 4]\r\n\/\/[10 2 3 4]<\/pre> \n <\/div> \n 
 <\/p> \n 
\u6dfb\u52a0\u5143\u7d20<\/strong><\/p> \n 
\u5185\u7f6e\u7684\u6cdb\u578b\u51fd\u6570append<\/code>\u53ef\u4ee5\u5728\u5207\u7247\u7684\u5c3e\u90e8\u8ffd\u52a0<\/span><\/strong>N<\/code>\u4e2a\u5143\u7d20\uff1a<\/p> \n 
 \n  
package main\r\n\r\nimport "fmt"\r\n\r\nfunc main() {\r\n\tvar a []int\r\n\t\/\/ \u8ffd\u52a01\u4e2a\u5143\u7d20\r\n\ta = append(a, 1)\r\n\t\/\/ \u8ffd\u52a0\u591a\u4e2a\u5143\u7d20, \u624b\u5199\u89e3\u5305\u65b9\u5f0f\r\n\ta = append(a, 1, 2, 3)\r\n\t\/\/ \u8ffd\u52a0\u4e00\u4e2a\u5207\u7247, \u5207\u7247\u9700\u8981\u89e3\u5305\r\n\ta = append(a, []int{1,2,3}...) \r\n\r\n\tfmt.Println(a)\r\n}\r\n\r\n\/\/[1 1 2 3 1 2 3]\r\n<\/pre> \n <\/div> \n 
\u4e0d\u8fc7\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u5bb9\u91cf\u4e0d\u8db3\u7684\u60c5\u51b5\u4e0b\uff0cappend<\/code>\u7684\u64cd\u4f5c\u4f1a\u5bfc\u81f4\u91cd\u65b0\u5206\u914d\u5185\u5b58\uff0c\u53ef\u80fd\u5bfc\u81f4\u5de8\u5927\u7684\u5185\u5b58\u5206\u914d\u548c\u590d\u5236\u6570\u636e\u4ee3\u4ef7\u3002\u5373\u4f7f\u5bb9\u91cf\u8db3\u591f\uff0c\u4f9d\u7136\u9700\u8981\u7528append<\/code>\u51fd\u6570\u7684\u8fd4\u56de\u503c\u6765\u66f4\u65b0\u5207\u7247\u672c\u8eab\uff0c\u56e0\u4e3a\u65b0\u5207\u7247\u7684\u957f\u5ea6\u5df2\u7ecf\u53d1\u751f\u4e86\u53d8\u5316\u3002<\/p> \n 
\u9664\u4e86\u5728\u5207\u7247\u7684\u5c3e\u90e8\u8ffd\u52a0\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u5728\u5207\u7247\u7684\u5f00\u5934\u6dfb\u52a0<\/strong><\/span>\u5143\u7d20\uff1a<\/p> \n 
 \n  
package main\r\n\r\nimport "fmt"\r\n\r\nfunc main() {\r\n\tvar a = []int{1,2,3}\r\n\t\/\/ \u5728\u5f00\u5934\u6dfb\u52a01\u4e2a\u5143\u7d20\r\n\ta = append([]int{0}, a...)\r\n\t\/\/ \u5728\u5f00\u5934\u6dfb\u52a01\u4e2a\u5207\u7247\r\n\ta = append([]int{-3,-2,-1}, a...) \r\n\r\n\tfmt.Println(a)\r\n}\r\n\r\n\/\/[-3 -2 -1 0 1 2 3]\r\n<\/pre> \n <\/div> \n 
\u5728\u5f00\u5934\u4e00\u822c\u90fd\u4f1a\u5bfc\u81f4\u5185\u5b58\u7684\u91cd\u65b0\u5206\u914d\uff0c\u800c\u4e14\u4f1a\u5bfc\u81f4\u5df2\u6709\u7684\u5143\u7d20\u5168\u90e8\u590d\u52361\u6b21<\/span>\u3002\u56e0\u6b64\uff0c\u4ece\u5207\u7247\u7684\u5f00\u5934\u6dfb\u52a0\u5143\u7d20\u7684\u6027\u80fd\u4e00\u822c\u8981\u6bd4\u4ece\u5c3e\u90e8\u8ffd\u52a0\u5143\u7d20\u7684\u6027\u80fd\u5dee\u5f88\u591a\u3002<\/p> \n 
\u7531\u4e8eappend<\/code>\u51fd\u6570\u8fd4\u56de\u65b0\u7684\u5207\u7247\uff0c\u4e5f\u5c31\u662f\u5b83\u652f\u6301\u94fe\u5f0f\u64cd\u4f5c\u3002\u6211\u4eec\u53ef\u4ee5\u5c06\u591a\u4e2aappend<\/code>\u64cd\u4f5c\u7ec4\u5408\u8d77\u6765\uff0c\u5b9e\u73b0\u5728\u5207\u7247\u4e2d\u95f4\u63d2\u5165<\/span><\/strong>\u5143\u7d20<\/span>\uff1a<\/p> \n 
 \n  
package main\r\n\r\nimport "fmt"\r\n\r\nfunc main() {\r\n\tvar a []int\r\n\t\/\/ \u5728\u7b2ci\u4e2a\u4f4d\u7f6e\u63d2\u5165x\r\n\ta = append(a[:i], append([]int{x}, a[i:]...)...)\r\n\t\/\/ \u5728\u7b2ci\u4e2a\u4f4d\u7f6e\u63d2\u5165\u5207\u7247\r\n\ta = append(a[:i], append([]int{1,2,3}, a[i:]...)...)\r\n}\r\n\r\n\/\/[-3 -2 -1 0 1 2 3]\r\n<\/pre> \n <\/div> \n 
 <\/p> \n 
append\u4e0e\u5185\u5b58\u5730\u5740\u53d8\u5316<\/strong><\/p> \n 
\u5f53\u6307\u5411append\u64cd\u4f5c\u65f6\uff0c\u4f1a\u5bf9\u5207\u7247\u7684\u771f\u5b9e\u6570\u636e\u8fdb\u884c\u5185\u5b58\u62f7\u8d1d\uff0c\u4e0e\u521d\u59cb\u5207","orderid":"0","title":"Go\u8bed\u8a00\u3010\u6570\u636e\u7ed3\u6784\u3011\u5207\u7247(\u4e00)","smalltitle":"","mid":"0","fname":"GO","special_id":"0","bak_id":"0","info":"0","hits":"101","pages":"2","comments":"0","posttime":"2019-09-17 14:36:17","list":"1568702177","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"https:\/\/www.cppentry.com\/upload_files\/","ispic":"0","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"\u8bed\u8a00<\/A> \u6570\u636e\u7ed3\u6784<\/A> \u5207\u7247<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"head\";s:0:\"\";s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";}","target":"0","ip":"14.17.22.35","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"Go\u8bed\u8a00\u3010\u6570\u636e\u7ed3\u6784\u3011\u5207\u7247","lastview":"1713868861","digg_num":"0","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}