{"id":57908,"date":"2024-10-10T22:09:24","date_gmt":"2024-10-10T14:09:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57908\/"},"modified":"2024-10-10T22:09:24","modified_gmt":"2024-10-10T14:09:24","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80-copy%ef%bc%9a%e5%88%87%e7%89%87%e8%a4%87%e8%a3%bd%ef%bc%88%e5%88%87%e7%89%87%e6%8b%b7%e8%b2%9d%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57908\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00 copy()\uff1a\u5207\u7247\u8907\u88fd\uff08\u5207\u7247\u62f7\u8c9d\uff09"},"content":{"rendered":"<h1 id=\"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80-copy%ef%bc%9a%e5%88%87%e7%89%87%e8%a4%87%e8%a3%bd%ef%bc%88%e5%88%87%e7%89%87%e6%8b%b7%e8%b2%9d%ef%bc%89-KVPwpVGJdl\">GO\u6559\u7a0b: Go \u8a9e\u8a00 copy()\uff1a\u5207\u7247\u8907\u88fd\uff08\u5207\u7247\u62f7\u8c9d\uff09<\/h1>\n<p>\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u5207\u7247\uff08slice\uff09\u662f\u4e00\u7a2e\u975e\u5e38\u9748\u6d3b\u4e14\u5f37\u5927\u7684\u6578\u64da\u7d50\u69cb\u3002\u5207\u7247\u7684\u7279\u6027\u4f7f\u5f97\u5b83\u5011\u5728\u8655\u7406\u52d5\u614b\u6578\u64da\u6642\u975e\u5e38\u65b9\u4fbf\u3002\u7136\u800c\uff0c\u7576\u6211\u5011\u9700\u8981\u8907\u88fd\u5207\u7247\u7684\u5167\u5bb9\u6642\uff0c\u4f7f\u7528 <code>copy()<\/code> \u51fd\u6578\u662f\u6700\u5e38\u898b\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e <code>copy()<\/code> \u51fd\u6578\u7684\u7528\u6cd5\u53ca\u5176\u5728\u5207\u7247\u8907\u88fd\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%88%87%e7%89%87%ef%bc%9f-KVPwpVGJdl\">\u4ec0\u9ebc\u662f\u5207\u7247\uff1f<\/h2>\n<p>\u5207\u7247\u662f Go \u8a9e\u8a00\u4e2d\u4e00\u7a2e\u8f15\u91cf\u7d1a\u7684\u6578\u64da\u69cb\u9020\uff0c\u57fa\u65bc\u6578\u7d44\uff08array\uff09\u5be6\u73fe\u3002\u5207\u7247\u4e0d\u50c5\u80fd\u5920\u52d5\u614b\u8abf\u6574\u5927\u5c0f\uff0c\u9084\u80fd\u5920\u65b9\u4fbf\u5730\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002\u5207\u7247\u7684\u57fa\u672c\u7d50\u69cb\u5305\u62ec\u4e09\u500b\u90e8\u5206\uff1a\u6307\u5411\u5e95\u5c64\u6578\u7d44\u7684\u6307\u91dd\u3001\u5207\u7247\u7684\u9577\u5ea6\u548c\u5207\u7247\u7684\u5bb9\u91cf\u3002<\/p>\n<h2 id=\"copy-%e5%87%bd%e6%95%b8%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95-KVPwpVGJdl\">copy() \u51fd\u6578\u7684\u57fa\u672c\u7528\u6cd5<\/h2>\n<p><code>copy()<\/code> \u51fd\u6578\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>func copy(dst, src []Type) int<\/code><\/pre>\n<p>\u9019\u88e1\uff0c<code>dst<\/code> \u662f\u76ee\u6a19\u5207\u7247\uff0c<code>src<\/code> \u662f\u6e90\u5207\u7247\u3002<code>copy()<\/code> \u51fd\u6578\u6703\u5c07 <code>src<\/code> \u4e2d\u7684\u5143\u7d20\u8907\u88fd\u5230 <code>dst<\/code> \u4e2d\uff0c\u4e26\u8fd4\u56de\u5be6\u969b\u8907\u88fd\u7684\u5143\u7d20\u6578\u91cf\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<code>dst<\/code> \u5207\u7247\u7684\u9577\u5ea6\u5fc5\u9808\u5927\u65bc\u6216\u7b49\u65bc <code>src<\/code> \u5207\u7247\u7684\u9577\u5ea6\uff0c\u5426\u5247\u53ea\u6703\u8907\u88fd\u5230 <code>dst<\/code> \u7684\u7d50\u675f\u4f4d\u7f6e\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8-copy-%e5%87%bd%e6%95%b8%e8%a4%87%e8%a3%bd%e5%88%87%e7%89%87-KVPwpVGJdl\">\u793a\u4f8b\uff1a\u4f7f\u7528 copy() \u51fd\u6578\u8907\u88fd\u5207\u7247<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 <code>copy()<\/code> \u51fd\u6578\u4f86\u8907\u88fd\u5207\u7247\uff1a<\/p>\n<pre><code>package main\n\nimport (\n    \"fmt\"\n)\n\nfunc main() {\n    src := []int{1, 2, 3, 4, 5}\n    dst := make([]int, len(src)) \/\/ \u5275\u5efa\u4e00\u500b\u8207 src \u76f8\u540c\u9577\u5ea6\u7684\u5207\u7247\n\n    n := copy(dst, src) \/\/ \u8907\u88fd src \u5230 dst\n    fmt.Println(\"\u8907\u88fd\u7684\u5143\u7d20\u6578\u91cf:\", n)\n    fmt.Println(\"\u6e90\u5207\u7247:\", src)\n    fmt.Println(\"\u76ee\u6a19\u5207\u7247:\", dst)\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u6e90\u5207\u7247 <code>src<\/code>\uff0c\u7136\u5f8c\u4f7f\u7528 <code>make()<\/code> \u51fd\u6578\u5275\u5efa\u4e86\u4e00\u500b\u76ee\u6a19\u5207\u7247 <code>dst<\/code>\u3002\u63a5\u8457\uff0c\u6211\u5011\u4f7f\u7528 <code>copy()<\/code> \u51fd\u6578\u5c07 <code>src<\/code> \u7684\u5167\u5bb9\u8907\u88fd\u5230 <code>dst<\/code> \u4e2d\uff0c\u4e26\u6253\u5370\u51fa\u8907\u88fd\u7684\u5143\u7d20\u6578\u91cf\u53ca\u5169\u500b\u5207\u7247\u7684\u5167\u5bb9\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-KVPwpVGJdl\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u6dfa\u62f7\u8c9d\u8207\u6df1\u62f7\u8c9d\uff1a<\/strong>\u4f7f\u7528 <code>copy()<\/code> \u51fd\u6578\u9032\u884c\u7684\u8907\u88fd\u662f\u6dfa\u62f7\u8c9d\uff0c\u9019\u610f\u5473\u8457\u5982\u679c\u5207\u7247\u4e2d\u5305\u542b\u6307\u5411\u5176\u4ed6\u6578\u64da\u7d50\u69cb\u7684\u6307\u91dd\uff0c\u9019\u4e9b\u6307\u91dd\u4ecd\u7136\u6307\u5411\u76f8\u540c\u7684\u5167\u5b58\u5730\u5740\u3002<\/li>\n<li><strong>\u5bb9\u91cf\u554f\u984c\uff1a<\/strong>\u5982\u679c\u76ee\u6a19\u5207\u7247\u7684\u5bb9\u91cf\u4e0d\u8db3\u4ee5\u5bb9\u7d0d\u6e90\u5207\u7247\u7684\u6240\u6709\u5143\u7d20\uff0c\u5247\u53ea\u6703\u8907\u88fd\u5230\u76ee\u6a19\u5207\u7247\u7684\u7d50\u675f\u4f4d\u7f6e\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u5728\u8655\u7406\u5927\u578b\u6578\u64da\u6642\uff0c\u4f7f\u7528 <code>copy()<\/code> \u51fd\u6578\u7684\u6027\u80fd\u512a\u65bc\u624b\u52d5\u8fed\u4ee3\u8907\u88fd\uff0c\u56e0\u70ba <code>copy()<\/code> \u51fd\u6578\u662f\u7d93\u904e\u512a\u5316\u7684\u5167\u5efa\u51fd\u6578\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-KVPwpVGJdl\">\u7e3d\u7d50<\/h2>\n<p>\u5728 Go \u8a9e\u8a00\u4e2d\uff0c<code>copy()<\/code> \u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u5de5\u5177\uff0c\u7528\u65bc\u5207\u7247\u7684\u8907\u88fd\u3002\u901a\u904e\u7406\u89e3\u5176\u57fa\u672c\u7528\u6cd5\u548c\u6ce8\u610f\u4e8b\u9805\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u7121\u8ad6\u662f\u5728\u958b\u767c\u5c0f\u578b\u61c9\u7528\u9084\u662f\u5927\u578b\u7cfb\u7d71\u6642\uff0c\u638c\u63e1\u5207\u7247\u7684\u8907\u88fd\u6280\u8853\u90fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f\u5176\u4ed6\u96f2\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 Go \u8a9e\u8a00\u4e2d\u7684 copy() \u51fd\u6578\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u5730\u8907\u88fd\u5207\u7247\uff0c\u63d0\u5347\u7a0b\u5f0f\u6027\u80fd\u8207\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-57908","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57908","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=57908"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57908\/revisions"}],"predecessor-version":[{"id":57909,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57908\/revisions\/57909"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57908"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57908"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}