{"id":205715,"date":"2025-06-12T10:15:30","date_gmt":"2025-06-12T02:15:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205715\/"},"modified":"2025-06-12T10:15:30","modified_gmt":"2025-06-12T02:15:30","slug":"golang-%e5%87%bd%e6%95%b0%ef%bc%9a%e6%8e%8c%e6%8f%a1%e7%b1%bb%e5%9e%8b%e6%96%ad%e8%a8%80%e4%bb%a5%e4%bc%98%e5%8c%96-go-%e4%bb%a3%e7%a0%81%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205715\/","title":{"rendered":"Golang \u51fd\u6570\uff1a\u638c\u63e1\u7c7b\u578b\u65ad\u8a00\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd"},"content":{"rendered":"

GOLANG\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300aGOLANG \u51fd\u6570\uff1a\u638c\u63e1\u7c7b\u578b\u65ad\u8a00\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01,
\n
,
\n,\u5728 Go \u8bed\u8a00\u4e2d\uff0c\u7c7b\u578b\u65ad\u8a00\u662f\u4e00\u79cd\u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u68c0\u67e5\u53d8\u91cf\u5b9e\u9645\u7c7b\u578b\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u5176\u4ed6\u7c7b\u578b\u7684\u80fd\u529b\u3002\u5b83\u53ef\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd\uff0c\u56e0\u4e3a\u53ef\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u7c7b\u578b\u8f6c\u6362\u548c\u63a5\u53e3\u8c03\u7528\u5f00\u9500\u3002,Go \u4e2d\u7684\u7c7b\u578b\u65ad\u8a00\u4f7f\u7528
\ntype assertion<\/code> \u8bed\u6cd5\u8868\u793a\uff1a,\u5176\u4e2d\uff1a,
\n\u573a\u666f\uff1a<\/strong>\u5728\u63a5\u53e3\u4e2d\u5904\u7406\u4e0d\u540c\u7c7b\u578b\u7684\u5bf9\u8c61,\u8003\u8651\u4e00\u4e2a
\nPerson<\/code> \u63a5\u53e3\uff0c\u5b83\u5b9a\u4e49\u4e86
\nName<\/code> \u65b9\u6cd5\uff1a,\u6211\u4eec\u6709\u4e00\u7ec4\u4e0d\u540c\u7684\u7c7b\u578b\u5b9e\u73b0\u4e86
\nPerson<\/code> \u63a5\u53e3\uff1a,
\n\u95ee\u9898\uff1a<\/strong>\u6211\u4eec\u9700\u8981\u4ece
\n[]Person<\/code> \u5207\u7247\u4e2d\u83b7\u53d6\u6240\u6709\u540d\u79f0\u3002,
\n\u89e3\u51b3\u65b9\u6848\uff1a<\/strong>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7c7b\u578b\u65ad\u8a00\u6765\u4f18\u5316\u4ee3\u7801\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u63a5\u53e3\u8c03\u7528\uff1a,\u7c7b\u578b\u65ad\u8a00\u53ef\u4ee5\u4f18\u5316\u6027\u80fd\uff0c\u56e0\u4e3a\u5b83\u907f\u514d\u4e86\u4e0d\u5fc5\u8981\u7684\u7c7b\u578b\u8f6c\u6362\u548c\u63a5\u53e3\u8c03\u7528\u3002\u5728\u6211\u4eec\u7684\u6848\u4f8b\u4e2d\uff0c
\nGetNames<\/code> \u51fd\u6570\u907f\u514d\u4e86\u591a\u6b21\u63a5\u53e3\u8c03\u7528\uff0c\u63d0\u9ad8\u4e86\u8fd0\u884c\u65f6\u6548\u7387\u3002,\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aGOLANG \u51fd\u6570\uff1a\u638c\u63e1\u7c7b\u578b\u65ad\u8a00\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u5427\uff01,\u8003\u8651\u4f7f\u7528\u7c7b\u578b\u5f00\u5173\uff08
\ntype switch<\/code>\uff09\u4f5c\u4e3a\u7c7b\u578b\u65ad\u8a00\u7684\u66ff\u4ee3\u65b9\u6848\u3002,\u786e\u4fdd\u53d8\u91cf\u5b9e\u9645\u662f\u76ee\u6807\u7c7b\u578b\uff0c\u5426\u5219
\nok<\/code> \u5c06\u4e3a
\nfalse<\/code>\uff0c\u5e76\u5bfc\u81f4\u7a0b\u5e8f\u9519\u8bef\u3002,\u7c7b\u578b\u65ad\u8a00\u4f1a\u5728\u8fd0\u884c\u65f6\u68c0\u67e5\u7c7b\u578b\uff0c\u56e0\u6b64\u5b83\u4f1a\u5e26\u6765\u4e00\u4e9b\u6027\u80fd\u5f00\u9500\u3002,
\ntype<\/code> \u662f\u8981\u8f6c\u6362\u7684\u7c7b\u578b\u3002,
\nvariable<\/code> \u662f\u8981\u8fdb\u884c\u7c7b\u578b\u65ad\u8a00\u7684\u53d8\u91cf\u3002,
\nvalue<\/code> \u662f\u8f6c\u6362\u540e\u7684\u503c\uff08\u5982\u679c\u662f\u76ee\u6807\u7c7b\u578b\uff0c\u5219\u975e\u7a7a\uff1b\u5426\u5219\u4e3a\u7a7a\uff09\u3002,GOLANG\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300aGOLANG \u51fd\u6570\uff1a\u638c\u63e1\u7c7b\u578b\u65ad\u8a00\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> GOLANG \u51fd\u6570\uff1a\u638c\u63e1\u7c7b\u578b\u65ad\u8a00\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd<\/span><\/p>\n

GOLANG \u51fd\u6570\uff1a\u638c\u63e1\u7c7b\u578b\u65ad\u8a00\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd<\/h1>\n

2024-10-26 21:08:49<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

GOLANG\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300aGOLANG \u51fd\u6570\uff1a\u638c\u63e1\u7c7b\u578b\u65ad\u8a00\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

<\/p>\n

<\/p>\n

Go \u51fd\u6570\uff1a\u638c\u63e1\u7c7b\u578b\u65ad\u8a00\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd<\/h2>\n

\u5728 Go \u8bed\u8a00\u4e2d\uff0c\u7c7b\u578b\u65ad\u8a00\u662f\u4e00\u79cd\u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u68c0\u67e5\u53d8\u91cf\u5b9e\u9645\u7c7b\u578b\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u5176\u4ed6\u7c7b\u578b\u7684\u80fd\u529b\u3002\u5b83\u53ef\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd\uff0c\u56e0\u4e3a\u53ef\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u7c7b\u578b\u8f6c\u6362\u548c\u63a5\u53e3\u8c03\u7528\u5f00\u9500\u3002<\/p>\n

\u7c7b\u578b\u65ad\u8a00\u8bed\u6cd5<\/h3>\n

Go \u4e2d\u7684\u7c7b\u578b\u65ad\u8a00\u4f7f\u7528 type assertion<\/code> \u8bed\u6cd5\u8868\u793a\uff1a<\/p>\n

value, ok := variable.(type)<\/pre>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  • variable<\/code> \u662f\u8981\u8fdb\u884c\u7c7b\u578b\u65ad\u8a00\u7684\u53d8\u91cf\u3002<\/li>\n
  • type<\/code> \u662f\u8981\u8f6c\u6362\u7684\u7c7b\u578b\u3002<\/li>\n
  • value<\/code> \u662f\u8f6c\u6362\u540e\u7684\u503c\uff08\u5982\u679c\u662f\u76ee\u6807\u7c7b\u578b\uff0c\u5219\u975e\u7a7a\uff1b\u5426\u5219\u4e3a\u7a7a\uff09\u3002<\/li>\n
  • ok<\/code> \u662f\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u6307\u793a\u8f6c\u6362\u662f\u5426\u6210\u529f\u3002<\/li>\n<\/ul>\n
    \u5b9e\u6218\u6848\u4f8b<\/h3>\n
    \u573a\u666f\uff1a<\/strong>\u5728\u63a5\u53e3\u4e2d\u5904\u7406\u4e0d\u540c\u7c7b\u578b\u7684\u5bf9\u8c61<\/p>\n
    \u8003\u8651\u4e00\u4e2a Person<\/code> \u63a5\u53e3\uff0c\u5b83\u5b9a\u4e49\u4e86 Name<\/code> \u65b9\u6cd5\uff1a<\/p>\n
    type Person interface {\n    GetName() string\n}<\/pre>\n
    \u6211\u4eec\u6709\u4e00\u7ec4\u4e0d\u540c\u7684\u7c7b\u578b\u5b9e\u73b0\u4e86 Person<\/code> \u63a5\u53e3\uff1a<\/p>\n
    type Student struct {\n    Name string\n}\n\nfunc (s *Student) GetName() string {\n    return s.Name\n}\n\ntype Employee struct {\n    Name string\n}\n\nfunc (e *Employee) GetName() string {\n    return e.Name\n}<\/pre>\n
    \u95ee\u9898\uff1a<\/strong>\u6211\u4eec\u9700\u8981\u4ece []Person<\/code> \u5207\u7247\u4e2d\u83b7\u53d6\u6240\u6709\u540d\u79f0\u3002<\/p>\n
    \u89e3\u51b3\u65b9\u6848\uff1a<\/strong>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7c7b\u578b\u65ad\u8a00\u6765\u4f18\u5316\u4ee3\u7801\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u63a5\u53e3\u8c03\u7528\uff1a<\/p>\n
    func GetNames(people []Person) []string {\n    names := []string{}\n    for _, person := range people {\n        \/\/ \u7c7b\u578b\u65ad\u8a00\u4e3a *Student\uff0c\u5982\u679c\u6210\u529f\u5219\u5b58\u50a8\u540d\u79f0\n        if student, ok := person.(*Student); ok {\n            names = append(names, student.Name)\n            continue\n        }\n\n        \/\/ \u7c7b\u578b\u65ad\u8a00\u4e3a *Employee\uff0c\u5982\u679c\u6210\u529f\u5219\u5b58\u50a8\u540d\u79f0\n        if employee, ok := person.(*Employee); ok {\n            names = append(names, employee.Name)\n        }\n    }\n\n    return names\n}<\/pre>\n
    \u6027\u80fd\u4f18\u5316<\/h3>\n
    \u7c7b\u578b\u65ad\u8a00\u53ef\u4ee5\u4f18\u5316\u6027\u80fd\uff0c\u56e0\u4e3a\u5b83\u907f\u514d\u4e86\u4e0d\u5fc5\u8981\u7684\u7c7b\u578b\u8f6c\u6362\u548c\u63a5\u53e3\u8c03\u7528\u3002\u5728\u6211\u4eec\u7684\u6848\u4f8b\u4e2d\uff0cGetNames<\/code> \u51fd\u6570\u907f\u514d\u4e86\u591a\u6b21\u63a5\u53e3\u8c03\u7528\uff0c\u63d0\u9ad8\u4e86\u8fd0\u884c\u65f6\u6548\u7387\u3002<\/p>\n
    \u6ce8\u610f<\/h3>\n
      \n
    • \u7c7b\u578b\u65ad\u8a00\u4f1a\u5728\u8fd0\u884c\u65f6\u68c0\u67e5\u7c7b\u578b\uff0c\u56e0\u6b64\u5b83\u4f1a\u5e26\u6765\u4e00\u4e9b\u6027\u80fd\u5f00\u9500\u3002<\/li>\n
    • \u786e\u4fdd\u53d8\u91cf\u5b9e\u9645\u662f\u76ee\u6807\u7c7b\u578b\uff0c\u5426\u5219 ok<\/code> \u5c06\u4e3a false<\/code>\uff0c\u5e76\u5bfc\u81f4\u7a0b\u5e8f\u9519\u8bef\u3002<\/li>\n
    • \u8003\u8651\u4f7f\u7528\u7c7b\u578b\u5f00\u5173\uff08type switch<\/code>\uff09\u4f5c\u4e3a\u7c7b\u578b\u65ad\u8a00\u7684\u66ff\u4ee3\u65b9\u6848\u3002<\/li>\n<\/ul>\n
      \u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aGOLANG \u51fd\u6570\uff1a\u638c\u63e1\u7c7b\u578b\u65ad\u8a00\u4ee5\u4f18\u5316 Go \u4ee3\u7801\u6027\u80fd\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u5427\uff01<\/p>\n
      \n
      \n <\/dt>\n
      \n   \u5982\u4f55\u5728 Go \u4e2d\u4f18\u96c5\u83b7\u53d6\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u5b57\u7b26\uff1f\n <\/dd>\n<\/dl>\n
      \n
      \n <\/dt>\n
      \n   \u82f9\u679c\u7535\u8111\u7ec8\u7aef\u5bc6\u7801\u662f\u4ec0\u4e48\u5bc6\u7801\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
      GOLANG\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66...<\/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-205715","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205715","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=205715"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205715\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205715"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205715"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205715"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}