{"id":207219,"date":"2025-07-08T10:18:36","date_gmt":"2025-07-08T02:18:36","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207219\/"},"modified":"2025-07-08T10:18:36","modified_gmt":"2025-07-08T02:18:36","slug":"%e7%b1%bb%e5%9e%8b%e8%bd%ac%e6%8d%a2%e4%b8%8e%e7%b1%bb%e5%9e%8b%e8%bd%ac%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207219\/","title":{"rendered":"\u7c7b\u578b\u8f6c\u6362\u4e0e\u7c7b\u578b\u8f6c\u6362"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u7c7b\u578b\u8f6c\u6362\u4e0e\u7c7b\u578b\u8f6c\u6362<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-20 21:51:38<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7\u300a\u7c7b\u578b\u8f6c\u6362\u4e0e\u7c7b\u578b\u8f6c\u6362\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0Golang<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

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

\u5728 go \u4e2d\uff0c\u7531\u4e8e\u5b83\u662f\u9759\u6001\u7c7b\u578b\u8bed\u8a00\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5f88\u591a\u7c7b\u578b\u8f6c\u6362\uff0c\u4f8b\u5982\uff0c<\/p>\n

var x float64\nvar y =32\nx=float64(32)<\/pre>\n
\u5c3d\u7ba1 go \u652f\u6301\u7c7b\u578b\u8f6c\u6362\uff0c\u4f46\u636e\u6211\u6240\u77e5\uff0c\u5b83\u5f88\u5c11\u88ab\u4f7f\u7528\u3002\u6709\u4eba\u53ef\u4ee5\u89e3\u91ca\u4e3a\u4ec0\u4e48\u53ef\u4ee5\u4f7f\u7528\u7c7b\u578b\u8f6c\u6362\u4ee5\u53ca\u4f7f\u7528\u60c5\u51b5\u5417\uff1f\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u7c7b\u578b\u8f6c\u6362\u7684\u793a\u4f8b\u3002<\/p>\n
type Common struct {\n        Gender int\n        From   string\n        To     string\n    }\n\n    type Foo struct {\n        Id    string\n        Name  string\n        Extra Common\n    }\n\n    type Bar struct {\n        Id    string\n        Name  string\n        Extra Common\n    }\n    foo:=Foo{\n        Id:\"123\",\n        Name:\"damitha\",\n        Extra: struct {\n            Gender int\n            From   string\n            To     string\n        }{Gender:1 , From:\"xx\", To:\"yy\" },\n    }\n    bar:=*(*Bar)(unsafe.Pointer(&foo))\n    fmt.Printf(\"%+v\\n\",bar)<\/pre>\n
\u751a\u81f3\u8fd9\u79cd\u6620\u5c04\u4e5f\u53ef\u4ee5\u901a\u8fc7\u66f4\u5b89\u5168\u7684\u65b9\u5f0f\u5b9e\u73b0\u3002<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u95ee\u9898\u4e2d\u7684\u4e0d\u5b89\u5168\u6076\u4f5c\u5267\u4e0e\u7c7b\u578b\u8f6c\u6362\u7c7b\u4f3c\u3002\u8fd9\u4e9b\u6076\u4f5c\u5267\u662f\u4e0d\u9700\u8981\u7684\u3002\u4f7f\u7528\u8f6c\u6362\uff1a<\/p>\n
bar := *(*bar)(&foo)<\/pre>\n
\u6216\u66f4\u7b80\u5355\u5730\u8bf4\uff1a<\/p>\n
bar := Bar(foo)<\/pre>\n
\u7684\u76f8\u5173\u5f15\u7528\u662f\uff1a<\/p>\n
\u5f15\u7528\u4e2d\u7684\u7b2c\u4e00\u70b9\u9002\u7528\u4e8e bar(foo)<\/code>\uff0c\u56e0\u4e3a foo<\/code> \u548c bar<\/code> \u5177\u6709\u76f8\u540c\u7684\u57fa\u7840\u7c7b\u578b\u3002<\/p>\n
\u5f15\u7528\u4e2d\u7684\u7b2c\u4e8c\u70b9\u9002\u7528\u4e8e\u8f6c\u6362 (*bar)(&foo)<\/code> \u56e0\u4e3a\uff1a<\/p>\n
    \n
  • *foo<\/code> \u548c *bar<\/code> \u662f\u6307\u9488\u7c7b\u578b<\/li>\n
  • *foo<\/code> \u548c *bar<\/code> \u4e0d\u662f\u5df2\u5b9a\u4e49\u7684\u7c7b\u578b\u3002<\/li>\n
  • \u57fa\u672c\u7c7b\u578b foo<\/code> \u548c bar<\/code> \u5177\u6709\u76f8\u540c\u7684\u57fa\u7840\u7c7b\u578b\u3002<\/li>\n<\/ul>\n
    \u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u7c7b\u578b\u8f6c\u6362\u4e0e\u7c7b\u578b\u8f6c\u6362\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-207219","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207219","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=207219"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207219\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}