{"id":207709,"date":"2025-07-08T11:09:16","date_gmt":"2025-07-08T03:09:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207709\/"},"modified":"2025-07-08T11:09:16","modified_gmt":"2025-07-08T03:09:16","slug":"go%e5%a6%82%e4%bd%95%e5%b0%86%e6%96%b9%e6%b3%95%e7%bb%91%e5%ae%9a%e5%88%b0%e5%af%b9%e8%b1%a1%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207709\/","title":{"rendered":"Go\u5982\u4f55\u5c06\u65b9\u6cd5\u7ed1\u5b9a\u5230\u5bf9\u8c61\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>Go\u5982\u4f55\u5c06\u65b9\u6cd5\u7ed1\u5b9a\u5230\u5bf9\u8c61\uff1f<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-24 20:45:35<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p><span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">Golang<\/span>\u4e0d\u77e5\u9053\u5927\u5bb6\u662f\u5426\u719f\u6089\uff1f\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aGo\u5982\u4f55\u5c06\u65b9\u6cd5\u7ed1\u5b9a\u5230\u5bf9\u8c61\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u5728\u770b\u5b8c\u672c\u7bc7\u6587\u7ae0\u540e\uff0c\u6709\u66f4\u597d\u7684\u5efa\u8bae\u6216\u8005\u53d1\u73b0\u54ea\u91cc\u6709\u95ee\u9898\uff0c\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u79ef\u6781\u8bc4\u8bba\u6307\u51fa\uff0c\u8c22\u8c22\uff01\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u52a0\u6cb9\u8fdb\u6b65\uff01<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u51e0\u5929\u524d\u521a\u521a\u5f00\u59cb\u5b66\u4e60 go\u3002\u4eca\u5929\uff0c\u6211\u4eec\u5728\u8c03\u8bd5\u4e00\u6bb5\u4ee3\u7801\u4e00\u6bb5\u65f6\u95f4\u65f6\uff0c\u53d1\u73b0\u4e86\u4e00\u4e9b\u770b\u8d77\u6765\u4e0e go \u8fdd\u53cd\u76f4\u89c9\u7684\u4e8b\u60c5\u3002<\/p>\n<p>\u9996\u5148\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u63a5\u53e3\u548c\u4e00\u4e2a\u5b9e\u73b0\u5b83\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<pre>type executer interface {\n    execute()\n}\n\ntype whatever struct {\n    name string\n}\n\nfunc (this *whatever) execute() {\n    log.println(this.name)\n}\n<\/pre>\n<p>\u73b0\u5728\u8003\u8651\u6211\u6709\u4e00\u4e2a\u6307\u5411 <code>whatever<\/code> \u7684 nil \u6307\u9488\uff0c\u5e76\u4e14\u6211\u5c1d\u8bd5\u8c03\u7528\u65b9\u6cd5 <code>execute<\/code>\u3002\u5728\u6211\u5230\u76ee\u524d\u4e3a\u6b62\u4f7f\u7528\u7684\u5176\u4ed6\u9762\u5411\u5bf9\u8c61\u8bed\u8a00\u4e2d\uff0c\u8fd9\u4f1a\u5728\u8c03\u7528\u65b9\u6cd5\uff08\u5373 <code>w.execute()<\/code>\uff09\u65f6\u8c03\u7528\u7a7a\u6307\u9488\u9519\u8bef\uff0c\u56e0\u4e3a\u5bf9\u8c61\u6307\u9488\u4e3a\u7a7a\u3002\u6709\u8da3\u7684\u662f\uff0c\u5728go\u4e2d\uff0c\u8c03\u7528\u8be5\u65b9\u6cd5\u65f6\uff0c\u5f53\u6211\u5c1d\u8bd5\u53d6\u6d88\u5f15\u7528<code>this.name<\/code>\u65f6\uff0c\u5728<code>execute<\/code>\u65b9\u6cd5\u5904\u53d1\u751f\u7a7a\u6307\u9488\u9519\u8bef\u3002\u4e3a\u4ec0\u4e48\u4e0d\u5728\u8c03\u7528\u65b9\u6cd5\u65f6\u5462\uff1f<\/p>\n<pre>func main() {\n    var w *whatever\n    w.Execute()\n}\n<\/pre>\n<p>\u6240\u4ee5\uff0c\u6211\u73b0\u5728\u60f3\u4e86\u89e3\u7684\u662f\u8fd9\u600e\u4e48\u53ef\u80fd\uff1f\u8fd9\u662f\u5426\u610f\u5473\u7740 go \u53ea\u5728\u7f16\u8bd1\u65f6\u8fdb\u884c\u65e9\u671f\u65b9\u6cd5\u7ed1\u5b9a\uff0c\u800c\u5728\u8fd0\u884c\u65f6\u6ca1\u6709\u65b9\u6cd5\u4e0e\u7279\u5b9a\u5bf9\u8c61\u7684\u7ed1\u5b9a\uff1f<\/p>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u63a5\u6536\u8005\u53ea\u662f\u51fd\u6570\u7684\u201c\u666e\u901a\u201d\u53c2\u6570\u3002\u666e\u901a\u53c2\u6570\u53ef\u4ee5\u662f\u6307\u9488\u7c7b\u578b\u3002\u90a3\u65f6\uff0c\u60a8\u53ef\u4ee5\u4f20\u9012 <code>nil<\/code> \u4f5c\u4e3a\u53c2\u6570\uff0c\u8fd9\u662f\u5b8c\u5168\u6709\u6548\u7684\u3002\u60a8\u9700\u8981\u8bb0\u4f4f\u7684\u53ea\u662f\u4e0d\u8981\u53d6\u6d88\u5f15\u7528 <code>nil<\/code> \u6307\u9488\u53c2\u6570\u3002\u8fd9\u540c\u6837\u9002\u7528\u4e8e\u7279\u6b8a\u63a5\u6536\u5668\u53c2\u6570\u3002\u5982\u679c\u5b83\u662f\u4e00\u4e2a\u6307\u9488\uff0c\u5219\u53ef\u80fd\u662f <code>nil<\/code>\uff0c\u53ea\u662f\u4e0d\u80fd\u53d6\u6d88\u5f15\u7528\u5b83\u3002<\/p>\n<\/p>\n<p>\u63a5\u6536\u8005\u662f\u901a\u8fc7\u65b9\u6cd5\u540d\u79f0\u524d\u9762\u7684\u989d\u5916\u53c2\u6570\u90e8\u5206\u6307\u5b9a\u7684\u3002<\/p>\n<p>&#8230;\u636e\u8bf4\u8be5\u65b9\u6cd5<em>\u7ed1\u5b9a<\/em>\u5230\u5176\u63a5\u6536\u8005\u57fa\u672c\u7c7b\u578b\uff0c\u5e76\u4e14\u65b9\u6cd5\u540d\u79f0\u4ec5\u5728 <code>t<\/code> \u6216 <code>*t<\/code> \u7c7b\u578b\u7684 \u8303\u56f4\u5185\u53ef\u89c1\u3002<\/p>\n<p>\u5141\u8bb8 <code>nil<\/code> \u63a5\u6536\u5668\u503c\u4e0d\u4ec5\u4ec5\u662f\u4e0d\u88ab\u7981\u6b62\u7684\u4e8b\u60c5\uff0c\u5b83\u8fd8\u6709\u5b9e\u9645\u7528\u9014\u3002\u6709\u5173\u793a\u4f8b\uff0c\u8bf7\u53c2\u9605 \u3002<\/p>\n<p>\u5728 java \u4e2d\uff0c\u60a8\u4e5f\u53ef\u4ee5\u5bf9 <code>null<\/code> \u5bf9\u8c61\u8c03\u7528\u9759\u6001\u65b9\u6cd5\u3002\u786e\u5b9e\uff0c\u4f60\u4e0d\u80fd\u5728 go \u4e2d\u505a\u540c\u6837\u7684\u4e8b\u60c5\uff0c\u56e0\u4e3a go \u6ca1\u6709\u50cf <code>static<\/code>\u3001<code>public<\/code>\u3001<code>private<\/code> \u7b49\u4fee\u9970\u7b26\u3002\u5728 go \u4e2d\u53ea\u6709\u5bfc\u51fa\u548c\u975e\u5bfc\u51fa\u65b9\u6cd5\uff08\u7531\u5176\u540d\u79f0\u7684\u7b2c\u4e00\u4e2a\u540e\u8005\u6697\u793a\uff09\u3002 p&gt; <\/p>\n<p>\u4f46\u662f go \u4e5f\u63d0\u4f9b\u4e86\u7c7b\u4f3c\u7684\u4e1c\u897f\uff1a \u548c \u3002\u5982\u679c\u60a8\u6709\u4e00\u4e2a\u5e26\u6709 <code>t<\/code> \u63a5\u6536\u5668\u7c7b\u578b\u7684\u65b9\u6cd5 <code>m<\/code>\uff0c\u5219\u8868\u8fbe\u5f0f <code>t.m<\/code> \u5c06\u662f\u4e00\u4e2a\u51fd\u6570\u503c\uff0c\u5176\u7b7e\u540d\u5305\u542b <code>m<\/code> \u7684\u53c2\u6570\u548c\u7ed3\u679c\u7c7b\u578b\uff0c\u5e76\u5e26\u6709\u201c\u524d\u7f00\u201d\u63a5\u6536\u5668\u7c7b\u578b\u3002<\/p>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre>type foo int\n\nfunc (f foo) bar(s string) string { return fmt.sprint(s, f) }\n\nfunc main() {\n    foobar := foo.bar \/\/ a function of type: func(foo, string) string\n    res := foobar(1, \"go\")\n    fmt.println(res)\n}<\/pre>\n<p><code>foo.bar<\/code> \u5c06\u662f\u4e00\u4e2a\u7c7b\u578b\u4e3a <code>func (foo, string) string<\/code> \u7684\u51fd\u6570\uff0c\u60a8\u53ef\u4ee5\u50cf\u4efb\u4f55\u5176\u4ed6\u666e\u901a\u51fd\u6570\u4e00\u6837\u8c03\u7528\u5b83\uff1b\u5e76\u4e14\u60a8\u8fd8\u5fc5\u987b\u5c06\u63a5\u6536\u8005\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\u4f20\u9012\u3002\u4e0a\u8ff0\u5e94\u7528\u7a0b\u5e8f\u8f93\u51fa\uff08\u5728 \u4e0a\u5c1d\u8bd5\uff09\uff1a<\/p>\n<pre>go1<\/pre>\n<p>\u7a0d\u5fae\u201c\u5411\u524d\u201d\u4e00\u70b9\uff0c\u6211\u4eec\u4e0d\u9700\u8981\u5c06 <code>foo.bar<\/code> \u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528 <code>foo.bar<\/code>\uff1a<\/p>\n<pre>fmt.println(foo.bar(1, \"go\"))<\/pre>\n<p>\u8f93\u51fa\u76f8\u540c\uff08\u5728 \u4e0a\u5c1d\u8bd5\uff09\u3002\u73b0\u5728\uff0c\u8fd9\u51e0\u4e4e\u770b\u8d77\u6765\u50cf java \u4e2d\u7684 <code>static<\/code> \u65b9\u6cd5\u8c03\u7528\u3002<\/p>\n<p>\u4f5c\u4e3a\u201c\u6700\u540e\u201d\u6b65\u9aa4\uff0c\u5f53\u6211\u4eec\u5bf9 <code>foo<\/code> \u672c\u8eab\u7684\u503c\uff08\u800c\u4e0d\u662f\u7c7b\u578b\u6807\u8bc6\u7b26\uff09\u4f7f\u7528\u4e0a\u8ff0\u8868\u8fbe\u5f0f\u65f6\uff0c\u6211\u4eec\u4f1a\u5f97\u5230\u65b9\u6cd5\u503c\uff0c\u8fd9\u4f1a\u4fdd\u5b58\u63a5\u6536\u8005\u4ee5\u53ca\u65b9\u6cd5\u503c\u7684\u7c7b\u578b\u4e0d\u5305\u542b\u63a5\u6536\u8005\uff0c\u5b83\u7684\u7b7e\u540d\u5c06\u662f\u65b9\u6cd5\u7684\u7b7e\u540d\uff0c\u6211\u4eec\u53ef\u4ee5\u8c03\u7528\u5b83\u800c\u65e0\u9700\u4f20\u9012\u63a5\u6536\u8005\uff1a<\/p>\n<pre>var f Foo = Foo(1)\nbar := f.Bar\nfmt.Println(bar(\"Go\"))<\/pre>\n<p>\u8fd9\u5c06\u518d\u6b21\u8f93\u51fa\u76f8\u540c\u7684\u5185\u5bb9\uff0c\u8bf7\u5728 \u4e0a\u5c1d\u8bd5\u3002<\/p>\n<p>\u67e5\u770b\u76f8\u5173\u95ee\u9898\uff1a<\/p>\n<\/p>\n<p>\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aGo\u5982\u4f55\u5c06\u65b9\u6cd5\u7ed1\u5b9a\u5230\u5bf9\u8c61\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u524d\u4f4d\u7f6e\uff1a &gt; &gt; &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207709","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207709","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=207709"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207709\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}