{"id":208106,"date":"2025-07-08T12:30:10","date_gmt":"2025-07-08T04:30:10","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208106\/"},"modified":"2025-07-08T12:30:10","modified_gmt":"2025-07-08T04:30:10","slug":"%e5%a6%82%e4%bd%95%e9%80%9a%e8%bf%87reflect-typeofinterface%e4%bb%8estruct%e8%bf%ad%e4%bb%a3t-funcs%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208106\/","title":{"rendered":"\u5982\u4f55\u901a\u8fc7reflect.TypeOf(interface{})\u4ecestruct\u8fed\u4ee3*T funcs\uff1f"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u901a\u8fc7reflect.TypeOf(interface{})\u4ecestruct\u8fed\u4ee3*T funcs\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-28 23:45:35<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60Golang<\/span>\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5982\u4f55\u901a\u8fc7reflect.TypeOf(interface{})\u4ecestruct\u8fed\u4ee3*T funcs\uff1f\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n

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

\u6211\u5728\u4f7f\u7528 reflect<\/code> \u4ece struct<\/code> \u8fed\u4ee3 *t funcs<\/code> \u65f6\u9047\u5230\u4e00\u4e9b\u95ee\u9898\u3002<\/p>\n

\u6211\u641c\u7d22\u4e86\u5f88\u591a\u7b54\u6848\uff0c\u4f46\u4f3c\u4e4e\u6ca1\u6709\u4e00\u4e2a\u4e13\u95e8\u8ba8\u8bba\u8fd9\u79cd\u60c5\u51b5\u3002<\/p>\n

\u6211\u5728 golang \u6587\u6863\u4e2d\u627e\u5230\u4e86 reflect.newat<\/code> \u4f46\u8bf4\u5b9e\u8bdd\u6211\u4e0d\u660e\u767d\uff0c\u800c\u4e14\u6211\u518d\u6b21\u627e\u4e0d\u5230\u9002\u5408\u6211\u60c5\u51b5\u7684\u5355\u4e00\u7b54\u6848\u3002<\/p>\n

\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3……\u901a\u8fc7\u4f7f\u7528\u4ee5\u4e0b\u7ed3\u6784\uff1a<\/p>\n

type counter struct {}\nfunc (self *counter) add(n int) {}\n<\/pre>\n
\u5982\u679c\u6211\u901a\u8fc7\u8c03\u7528\u7ed3\u6784\u6307\u9488\u672c\u8eab\u6765\u4f7f\u7528\u53cd\u5c04\uff0c\u5b83\u4f1a\u6309\u9884\u671f\u5de5\u4f5c\uff1a<\/p>\n
y := reflect.typeof(&counter{})\n\nfor k := 0; k < y.nummethod(); k++ {\n    fmt.println(y.method(k)) \/\/ {add  func(*counter, int) <func(*counter, int) value> 0}\n}\n<\/pre>\n
\u4f46\u5c31\u6211\u800c\u8a00\uff0c\u591a\u4e2a\u7ed3\u6784\u53ef\u4ee5\u5230\u8fbe\u8fd9\u91cc\uff0c\u56e0\u6b64\u5b83\u4f5c\u4e3a\u63a5\u53e3\u5230\u8fbe\uff1a<\/p>\n
var p interface{} = Counter{}\n\nz := reflect.New(reflect.TypeOf(p))\n\nfor k := 0; k < z.NumMethod(); k++ {\n   fmt.Println(z.Method(k)) \/\/ 0x47d150\n}\n<\/pre>\n
\u4f46\u5982\u56fe\u6240\u793a\uff0c\u5b83\u6253\u5370\u4e86\u5185\u5b58\u5730\u5740\u3002<\/p>\n
\u6211\u5e0c\u671b 0x47d150<\/code> \u7684\u8f93\u51fa\u4e0e\u6211\u76f4\u63a5\u4f7f\u7528\u6307\u9488\u7684\u8f93\u51fa\u76f8\u540c\u3002\u6211\u5728\u8fd9\u91cc\u505a\u9519\u4e86\u4ec0\u4e48\uff1f<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u503c y<\/code> a reflect.type<\/code>\u3002\u7c7b\u578b\u4e0a\u7684 method<\/code> \u65b9\u6cd5\u76f8\u5f53\u4e8e \u3002<\/p>\n
\u503c z<\/code> \u662f reflect.value<\/code>\u3002\u503c\u4e0a\u7684 method<\/code> \u65b9\u6cd5\u76f8\u5f53\u4e8e \u3002<\/p>\n
\u6253\u5370\u7684\u8868\u793a\u4e0d\u540c\uff0c\u56e0\u4e3a\u65b9\u6cd5\u8868\u8fbe\u5f0f\u548c\u65b9\u6cd5\u503c\u4e0d\u662f\u540c\u4e00\u4ef6\u4e8b\u3002<\/p>\n
\u4f7f\u7528 reflect.ptrto<\/code> \u83b7\u53d6\u7c7b\u578b\u7684\u6307\u9488\u7c7b\u578b\uff1a<\/p>\n
var p interface{} = counter{}\nz := reflect.ptrto(reflect.typeof(p))\nfor k := 0; k < z.nummethod(); k++ {\n    fmt.println(z.method(k))  \/\/ {add  func(*counter, int) <func(*counter, int) value> 0}\n}<\/pre>\n
\u63a5\u53e3\u4e2d\u7684\u5177\u4f53\u503c\u662f\u4e00\u4e2a\u975e\u6307\u9488\u503c\u3002\u5982\u679c\u63a5\u53e3\u4e2d\u7684\u5177\u4f53\u503c\u662f\u6307\u9488\u7c7b\u578b\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528\u6b64\u4ee3\u7801\uff1a<\/p>\n
var p interface{} = &Counter{}\nz := reflect.TypeOf(p)\nfor k := 0; k < z.NumMethod(); k++ {\n    fmt.Println(z.Method(k)) \/\/ {Add  func(*Counter, int) <func(*Counter, int) Value> 0}\n}<\/pre>\n
\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8eGolang\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/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-208106","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208106","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=208106"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208106\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208106"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208106"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208106"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}