{"id":207414,"date":"2025-07-08T12:30:19","date_gmt":"2025-07-08T04:30:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207414\/"},"modified":"2025-07-08T12:30:19","modified_gmt":"2025-07-08T04:30:19","slug":"%e5%a6%82%e4%bd%95%e5%b0%86%e6%8e%a5%e5%8f%a3%e6%96%b9%e6%b3%95%e4%bc%a0%e9%80%92%e7%bb%99%e5%87%bd%e6%95%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207414\/","title":{"rendered":"\u5982\u4f55\u5c06\u63a5\u53e3\u65b9\u6cd5\u4f20\u9012\u7ed9\u51fd\u6570\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>\u5982\u4f55\u5c06\u63a5\u53e3\u65b9\u6cd5\u4f20\u9012\u7ed9\u51fd\u6570\uff1f<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-22 13:36:31<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">Golang<\/span>\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">Golang<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u5c06\u63a5\u53e3\u65b9\u6cd5\u4f20\u9012\u7ed9\u51fd\u6570\uff1f\u300b<\/span>\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u7684\u754c\u9762\u5982\u4e0b\uff1a<\/p>\n<pre>type visitable interface {\n    getName() string\n    getLookupMessage() string\n}\n<\/pre>\n<p>\u6211\u60f3\u521b\u5efa\u4e00\u4e2a\u5e26\u6709\u50cf <code>apply(visitable []visitable, function ???)<\/code> \u8fd9\u6837\u7684\u7b7e\u540d\u7684\u51fd\u6570\uff0c\u5b83\u63a5\u53d7visitable\u7684\u51fd\u6570\uff08\u4f8b\u5982 getname \u6216 getlookupmessage\uff09\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\u3002\u6211\u5728\u6280\u672f\u4e0a\u53ef\u4ee5\u505a\u5230\u5417\uff1f\u5982\u679c\u662f\uff0c\u600e\u4e48\u505a\uff1f<\/p>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u662f\u7684\uff0c\u5728\u8fd9\u79cd\u7279\u5b9a\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 \u3002\u8fd9\u662f\u6709\u6548\u7684\uff0c\u56e0\u4e3a\u4e24\u4e2a\u63a5\u53e3\u65b9\u6cd5\u5177\u6709\u76f8\u540c\u7684\u7b7e\u540d\uff0c\u5373 <code>visitable.getname<\/code> \u548c <code>visitable.getlookupmessage<\/code> \u7684\u7c7b\u578b\u90fd\u662f <code>func(visitable) string<\/code>\uff1a<\/p>\n<pre>package main\n\ntype visitable interface {\n    getName() string\n    getLookupMessage() string\n}\n\nfunc apply(vs []visitable, m func(visitable) string) {\n    for _, v := range vs {\n        m(v)\n    }\n}\n\nfunc main() {\n    apply(nil, visitable.getName)\n    apply(nil, visitable.getLookupMessage)\n}<\/pre>\n<p>\u4f46\u662f\uff0c\u8003\u8651\u5230 <code>apply<\/code> \u662f\u591a\u4e48\u5fae\u4e0d\u8db3\u9053\uff0c\u76ee\u524d\u8fd8\u4e0d\u6e05\u695a\u4e3a\u4ec0\u4e48\u8fd9\u4f1a\u6709\u7528\uff0c\u7279\u522b\u662f\u8003\u8651\u5230\u8fd9\u4e0d\u9002\u7528\u4e8e\u5177\u6709\u4e0d\u540c\u7b7e\u540d\u7684\u65b9\u6cd5\u3002<\/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\u300a\u5982\u4f55\u5c06\u63a5\u53e3\u65b9\u6cd5\u4f20\u9012\u7ed9\u51fd\u6570\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-207414","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207414","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=207414"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207414\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}