{"id":207824,"date":"2025-07-08T11:52:27","date_gmt":"2025-07-08T03:52:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207824\/"},"modified":"2025-07-08T11:52:27","modified_gmt":"2025-07-08T03:52:27","slug":"golang%e5%a6%82%e4%bd%95%e8%ae%bf%e9%97%ae%e6%8f%90%e5%8d%87%e7%9a%84%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207824\/","title":{"rendered":"golang\u5982\u4f55\u8bbf\u95ee\u63d0\u5347\u7684\u7c7b\u578b"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> golang\u5982\u4f55\u8bbf\u95ee\u63d0\u5347\u7684\u7c7b\u578b<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-25 21:33:33<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300agolang\u5982\u4f55\u8bbf\u95ee\u63d0\u5347\u7684\u7c7b\u578b\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n

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

\u6211\u6709\u4e00\u4e2a\u5728\u4e24\u4e2a\u7279\u5b9a\u7ed3\u6784\u4e2d\u63d0\u5347\u7684\u201c\u901a\u7528\u201d\u7ed3\u6784\u3002\u4f8b\u5982\uff1a<\/p>\n

type common struct {\n    name string\n}\n\ntype apple struct {\n    common\n}\n\ntype orange struct {\n    common\n}<\/pre>\n
\u7701\u7565\u4e86\u7279\u5b9a\u4e8e apple<\/code> \u548c orange<\/code> \u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n
\u6211\u6709\u6bcf\u4e2a\u7279\u5b9a\u7c7b\u578b\u7684\u6620\u5c04\uff0c\u4f8b\u5982 map[string]*apple<\/code> \u548c map[string]*orange<\/code>\u3002<\/p>\n
\u6211\u6b63\u5728\u5c1d\u8bd5\u521b\u5efa\u4e00\u4e2a\u53ef\u4ee5\u63d0\u53d6 common<\/code> \u6307\u9488\u7684\u51fd\u6570\u3002\u4ece\u6211\u8fc4\u4eca\u4e3a\u6b62\u7684\u5c1d\u8bd5\u6765\u770b\uff0c\u53cd\u5c04\u4f3c\u4e4e\u662f\u5fc5\u9700\u7684\u3002<\/p>\n
\u6211\u7684\u804c\u80fd\u662f\uff1a<\/p>\n
func getFruitArray(theMap interface{}) []*common {\n    m := reflect.ValueOf(theMap)\n    cf := make([]*common, 0, m.Len())\n    for _, mk := range m.MapKeys() {\n        v := m.MapIndex(mk)\n        cf = append(cf, v.Interface().(*common))\n    }\n\n    return cf\n}<\/pre>\n
\u6b64\u51fd\u6570\u5728 cf =append(cf, v.interface().(*common))<\/code> \u5904\u5931\u8d25\uff1a<\/p>\n
panic\uff1a\u63a5\u53e3\u8f6c\u6362\uff1a\u63a5\u53e3{}\u662f*main.apple\uff0c\u800c\u4e0d\u662f*main.common<\/code><\/p>\n
\u6709\u6ca1\u6709\u4e00\u79cd\u65b9\u6cd5\u53ef\u4ee5\u8bbf\u95ee\u63d0\u5347\u7684\u7ed3\u6784 common<\/code> \u800c\u65e0\u9700\u5728\u6b64\u51fd\u6570\u4e2d\u4e13\u95e8\u5f15\u7528 apple<\/code> \u6216 orange<\/code> \uff1f<\/p>\n
\u6f14\u793a\u793a\u4f8b<\/p>\n
 <\/p>\n
\u6b63\u786e\u7b54\u6848<\/h2>\n
 <\/p>\n
\u8bf7\u53c2\u9605 burak \u7684\u7b54\u6848\uff0c\u5b83\u505a\u51fa\u4e86\u5fc5\u987b\u8c03\u7528\u65b9\u6cd5\u6765\u63a5\u6536\u503c\u7684\u5408\u7406\u59a5\u534f\u3002<\/p>\n
\u65e0\u8bba\u5982\u4f55\uff0c\u4e0b\u9762\u662f\u4e00\u4e2a\u6309\u7167\u60a8\u7684\u8ba1\u5212\u4f7f\u7528\u53cd\u5c04\u7684\u89e3\u51b3\u65b9\u6848\u3002\u8bf7\u6ce8\u610f\uff0ccommon<\/code> \u9700\u8981\u662f common<\/code> \uff08\u5bfc\u51fa\u5b57\u6bb5\uff09\uff0c\u5426\u5219\u53cd\u5c04\u5305\u65e0\u6cd5\u8bfb\u53d6\u5b83\u3002<\/p>\n
package main\n\nimport (\n    \"log\"\n    \"reflect\"\n)\n\ntype common struct {\n    name string\n}\n\ntype apple struct {\n    common\n}\n\ntype orange struct {\n    common\n}\n\nfunc getfruitarray(themap interface{}) []*common {\n    m := reflect.valueof(themap)\n    cf := make([]*common, 0, m.len())\n    for _, mk := range m.mapkeys() {\n        v := m.mapindex(mk)\n        f := v.elem().fieldbyname(\"common\")\n        cf = append(cf, f.addr().interface().(*common))\n    }\n\n    return cf\n}\n\nfunc main() {\n    applemap := make(map[string]*apple)\n    orangemap := make(map[string]*orange)\n\n    a1 := &apple{}\n    a1.name = \"my apple\"\n    applemap[\"test\"] = a1\n\n    o1 := &orange{}\n    o1.name = \"my orange\"\n    orangemap[\"test2\"] = o1\n\n    f1 := getfruitarray(applemap)\n    for _, c := range f1 {\n        log.printf(\"f1: %s\", c.name)\n    }\n\n    f2 := getfruitarray(orangemap)\n    for _, c := range f2 {\n        log.printf(\"f2: %s\", c.name)\n    }\n}\n<\/pre>\n<\/p>\n
\u4f60\u4e0d\u9700\u8981\u53cd\u5c04\u3002\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u63a5\u53e3\uff1a<\/p>\n
type common struct {\n    name string\n    tag  string\n}\n\nfunc (c *common) getcommon() *common {return c}\n\ntype withcommon interface {\n   getcommon() *common\n}<\/pre>\n
\u7136\u540e\u4f60\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a<\/p>\n
func getfruitarray(themap map[string]withcommon) []*common {\n   cf := make([]*common, 0, themap.len())\n   for _,k:=range themap {\n      cf=append(cf,k.getcommon())\n   }\n   return cf\n}<\/pre>\n
\u4f46\u4f60\u8fd8\u5fc5\u987b\u8fd9\u6837\u505a\uff1a<\/p>\n
appleMap := make(map[string]WithCommon)\n orangeMap := make(map[string]WithCommon)<\/pre>\n
\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300agolang\u5982\u4f55\u8bbf\u95ee\u63d0\u5347\u7684\u7c7b\u578b\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03Golang\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\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-207824","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207824","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=207824"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207824\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}