{"id":207802,"date":"2025-07-08T10:20:07","date_gmt":"2025-07-08T02:20:07","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207802\/"},"modified":"2025-07-08T10:20:07","modified_gmt":"2025-07-08T02:20:07","slug":"%e4%bb%85%e5%9f%ba%e4%ba%8e%e6%8e%a5%e5%8f%a3%e8%80%8c%e4%b8%8d%e8%80%83%e8%99%91%e5%ba%95%e5%b1%82%e7%b1%bb%e5%9e%8b%ef%bc%88%e6%b2%a1%e6%9c%89cmpopts-useinterfaceonly%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207802\/","title":{"rendered":"\u4ec5\u57fa\u4e8e\u63a5\u53e3\u800c\u4e0d\u8003\u8651\u5e95\u5c42\u7c7b\u578b\uff08\u6ca1\u6709\u201ccmpopts.UseInterfaceOnly()\u201d\uff09\u6765\u6bd4\u8f83\u5b57\u6bb5\u7684\u60ef\u7528\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u4ec5\u57fa\u4e8e\u63a5\u53e3\u800c\u4e0d\u8003\u8651\u5e95\u5c42\u7c7b\u578b\uff08\u6ca1\u6709\u201ccmpopts.UseInterfaceOnly()\u201d\uff09\u6765\u6bd4\u8f83\u5b57\u6bb5\u7684\u60ef\u7528\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-25 18:27:33<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300a\u4ec5\u57fa\u4e8e\u63a5\u53e3\u800c\u4e0d\u8003\u8651\u5e95\u5c42\u7c7b\u578b\uff08\u6ca1\u6709\u201ccmpopts.UseInterfaceOnly()\u201d\uff09\u6765\u6bd4\u8f83\u5b57\u6bb5\u7684\u60ef\u7528\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f\u300b<\/span>\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6709\u4e00\u5806\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u4eec\u90fd\u9075\u5faa\u4e00\u4e2a\u63a5\u53e3\uff0c\u6211\u60f3\u7f16\u5199\u4e00\u4e2a\u53ef\u4ee5\u5728\u6240\u6709\u5b9e\u73b0\u4e0a\u5de5\u4f5c\u7684\u5355\u5143\u6d4b\u8bd5\u3002<\/p>\n

\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u6211\u4f7f\u7528\u76f8\u540c\u7684\u7ed3\u6784\u7c7b\u578b\uff0c\u6211\u60f3\u4f7f\u7528 cmp.diff\uff0c\u4f46\u6211\u627e\u4e0d\u5230\u4e00\u79cd\u65b9\u6cd5\u6765\u544a\u8bc9 cmp \u57fa\u4e8e\u754c\u9762\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n

\u73a9\u5177\u793a\u4f8b\uff1a<\/p>\n

type Person interface {\n    Name() string\n    Age() int\n}\n\ntype yearlyPerson struct {\n    name     string\n    yearsOld int\n}\n\ntype dailyPerson struct {\n    name    string\n    daysOld int\n}\n\nfunc (dp *dailyPerson) Age() int {\n    return dp.daysOld \/ 365\n}\n\n\/\/ Other 3 functions are trivial field returns.<\/pre>\n
\u5982\u679c\u6211\u4eec\u5047\u88c5\u6709\u5f88\u591a\u8fd9\u6837\u7684\u5b57\u6bb5\uff0c\u5728\u5355\u5143\u6d4b\u8bd5\u4e2d\uff0c\u6211\u53ef\u80fd\u60f3\u4f7f\u7528 cmp.diff<\/code> \u6765\u5f88\u597d\u5730\u6355\u83b7\u548c\u663e\u793a\u5b83\u53d1\u73b0\u7684\u4efb\u4f55\u5dee\u5f02\uff0c\u4f46 iiuc\u3001cmp<\/code> \u53ea\u5173\u6ce8\u5177\u4f53\u7c7b\u578b\u3002<\/p>\n
\u662f\u5426\u6709\u4e00\u79cd\u60ef\u7528\u7684\u65b9\u6cd5\u6765\u8fdb\u884c\u57fa\u4e8e\u63a5\u53e3\u5b57\u6bb5\u7684\u6bd4\u8f83\uff1f\u6211\u6ca1\u6709\u4ed4\u7ec6\u5bfb\u627e\uff0c\u4f46\u6211\u8fd8\u6ca1\u6709\u627e\u5230\u201ccmp\/cmpopts \u4f46\u4e13\u95e8\u7528\u4e8e\u754c\u9762\u8868\u9762\u201d\u5e93\u3002<\/p>\n
\u5728\u6211\u7684\u8111\u6d77\u4e2d\uff0c\u6211\u80fd\u60f3\u5230\u7684\u6700\u597d\u7684\u662f\u4e00\u4e2a\u5e2e\u52a9\u7a0b\u5e8f\u5e93\uff0c\u5b83\u624b\u52a8\u6784\u9020\u4e00\u4e2a\u5177\u4f53\u7c7b\u578b\uff0c\u5176\u4e2d\u5bfc\u51fa\u7684\u5b57\u6bb5\u4e0e\u754c\u9762\u8868\u9762\u5339\u914d\uff0c\u7136\u540e\u76f8\u5e94\u5730\u4f7f\u7528 cmp.diff<\/code> \uff0c\u5c31\u50cf\u6211\u5728\u8fd9\u91cc\u6240\u505a\u7684\u90a3\u6837\uff1ahttps:\/\/ \/go.dev\/play\/p\/tteomrgxttq<\/p>\n
\u8fd9\u662f\u6700\u597d\u7684\u65b9\u6cd5\uff0c\u8fd8\u662f\u6709\u66f4\u597d\u7684\u65b9\u6cd5\uff1f<\/p>\n
 <\/p>\n
\u6b63\u786e\u7b54\u6848<\/h2>\n
 <\/p>\n
cmp.Diff<\/code>\u662f\u4e13\u95e8\u770b\u6570\u636e\u7684\u3002\u5ffd\u7565\u5e95\u5c42\u7c7b\u578b\u7684\u63a5\u53e3\u6ca1\u6709\u6570\u636e\u3002\u5b83\u53ea\u6709\u65b9\u6cd5\u3002\u53ea\u6709\u5177\u4f53\u7c7b\u578b\u624d\u6709\u5b57\u6bb5\u3002<\/p>\n
\u57fa\u4e8e\u63a5\u53e3\u5b57\u6bb5\u7684\u6bd4\u8f83<\/p>\n
\u4e0d\u5b58\u5728\uff1b\u63a5\u53e3\u6ca1\u6709\u5b57\u6bb5\u3002<\/p>\n
\u4f7f\u7528\u4e0e\u754c\u9762\u5339\u914d\u7684\u5bfc\u51fa\u5b57\u6bb5\u6784\u9020\u5177\u4f53\u7c7b\u578b<\/p>\n
\u4e0d\u5b58\u5728\uff1b\u63a5\u53e3\u8868\u9762\u53ea\u662f\u65b9\u6cd5\u5e76\u4e14\u6ca1\u6709\u6307\u5b9a\u4efb\u4f55\u5b57\u6bb5\u3002\u60a8\u53ef\u4ee5\u624b\u52a8\u6267\u884c\u6b64\u64cd\u4f5c\uff0c\u56e0\u4e3a\u60a8\u77e5\u9053\u54ea\u4e9b\u65b9\u6cd5\u53ea\u662f\u5e95\u5c42\u5b57\u6bb5\u7684 getter\/setter\uff0c\u4f46\u8fd0\u884c\u65f6\u5de5\u5177\u65e0\u6cd5\u505a\u51fa\u8be5\u5047\u8bbe\u3002\u5927\u591a\u6570\u63a5\u53e3\u4e0d\u6307\u5b9a getter\/setter\uff0c\u56e0\u4e3a\u8fd9\u901a\u5e38\u4e0d\u662f\u5b83\u4eec\u7684\u7528\u9014\uff1b\u5b83\u4eec\u7528\u4e8e\u6307\u5b9a\u884c\u4e3a\u3002<\/p>\n
\u56e0\u6b64\uff0c\u672c\u8d28\u4e0a\uff0c\u60a8\u6240\u63cf\u8ff0\u7684\u5185\u5bb9\u53ea\u80fd\u901a\u8fc7\u81ea\u5df1\u4e3a\u6bcf\u79cd\u63a5\u53e3\u7c7b\u578b\u7f16\u5199\u6bd4\u8f83\u6765\u5b9e\u9645\u5b9e\u73b0\uff0c\u5c31\u50cf\u60a8\u5728\u793a\u4f8b\u4e2d\u6240\u505a\u7684\u90a3\u6837\u3002<\/p>\n
\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u4ec5\u57fa\u4e8e\u63a5\u53e3\u800c\u4e0d\u8003\u8651\u5e95\u5c42\u7c7b\u578b\uff08\u6ca1\u6709\u201ccmpopts.UseInterfaceOnly()\u201d\uff09\u6765\u6bd4\u8f83\u5b57\u6bb5\u7684\u60ef\u7528\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-207802","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207802","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=207802"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207802\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207802"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207802"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}