{"id":207182,"date":"2025-07-08T10:14:54","date_gmt":"2025-07-08T02:14:54","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207182\/"},"modified":"2025-07-08T10:14:54","modified_gmt":"2025-07-08T02:14:54","slug":"go%ef%bc%9a%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e6%9e%9a%e4%b8%be%e4%bd%9c%e4%b8%ba%e7%b1%bb%e5%9e%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207182\/","title":{"rendered":"Go\uff1a\u5982\u4f55\u4f7f\u7528\u679a\u4e3e\u4f5c\u4e3a\u7c7b\u578b\uff1f"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> Go\uff1a\u5982\u4f55\u4f7f\u7528\u679a\u4e3e\u4f5c\u4e3a\u7c7b\u578b\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-20 17:30:35<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u6b22\u8fce\u5404\u4f4d\u5c0f\u4f19\u4f34\u6765\u5230\uff0c\u76f8\u805a\u4e8e\u6b64\u90fd\u662f\u7f18\u54c8\u54c8\u54c8\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u300aGo\uff1a\u5982\u4f55\u4f7f\u7528\u679a\u4e3e\u4f5c\u4e3a\u7c7b\u578b\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u5bf9Golang<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u975e\u5e38\u611f\u5174\u8da3\u6216\u8005\u6b63\u5728\u81ea\u5b66\uff0c\u90fd\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\uff01\u5f53\u7136\uff0c\u6709\u4ec0\u4e48\u5efa\u8bae\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u7559\u8a00\u63d0\u51fa\uff01\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

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

\u6211\u6709\u4e00\u4e2a\u5b9a\u4e49\u7279\u5b9a\u4e8b\u4ef6\u7684\u4e8b\u4ef6\u5217\u8868\uff08\u679a\u4e3e\uff09\uff1a<\/p>\n

package events\n\nconst (\n    new_user       = \"new_user\"\n    direct_message = \"direct_message\"\n    disconnect     = \"disconnect\"\n)\n<\/pre>\n
\u5e76\u4e14\u6709\u4e00\u4e2a\u7ed3\u6784\u4f53\u5c06\u4f7f\u7528\u6b64\u679a\u4e3e\u4f5c\u4e3a\u5176\u5c5e\u6027\u4e4b\u4e00<\/p>\n
type ConnectionPayload struct {\n    EventName    string      `json:\"eventName\"`\n    EventPayload interface{} `json:\"eventPayload\"`\n}\n<\/pre>\n
\u6709\u6ca1\u6709\u529e\u6cd5\u53ef\u4ee5\u4f7f\u7528 enum<\/code> \u4f5c\u4e3a eventname<\/strong> \u7684\u7c7b\u578b\u800c\u4e0d\u662f\u5b57\u7b26\u4e32\uff1f<\/p>\n
\u8fd9\u5728 typescript<\/code> \u4e2d\u662f\u53ef\u80fd\u7684\uff0c\u4e0d\u77e5\u9053\u5982\u4f55\u5728 golang \u4e2d\u505a\u5230\u8fd9\u4e00\u70b9\u3002<\/p>\n
\u6211\u5e0c\u671b\u5f00\u53d1\u4eba\u5458\u901a\u8fc7\u679a\u4e3e\u5f3a\u5236\u4f7f\u7528\u6b63\u786e\u7684\u4e8b\u4ef6\u540d\u79f0\uff0c\u800c\u4e0d\u662f\u901a\u8fc7\u4f7f\u7528\u4efb\u4f55\u968f\u673a\u5b57\u7b26\u4e32\u4f5c\u4e3a\u4e8b\u4ef6\u540d\u79f0\u6765\u72af\u9519\u8bef<\/em>\u3002<\/p>\n
 <\/p>\n
\u6b63\u786e\u7b54\u6848<\/h2>\n
 <\/p>\n
\u60a8\u53ef\u4ee5\u901a\u8fc7\u751f\u6210\u5982\u4e0b\u4ee3\u7801\u6765\u5b8c\u6210\u6b64\u64cd\u4f5c\u3002<\/p>\n
type eventnames string\n\nconst (\n    new_user       eventnames = \"new_user\"\n    direct_message eventnames = \"direct_message\"\n    disconnect     eventnames = \"disconnect\"\n)<\/pre>\n
\u7136\u540e\u5c06\u60a8\u7684\u7ed3\u6784\u66f4\u6539\u4e3a\uff1a<\/p>\n
type connectionpayload struct {\n    eventname    eventnames  `json:\"eventname\"`\n    eventpayload interface{} `json:\"eventpayload\"`\n}<\/pre>\n
\u76ee\u524d go \u4e2d\u6ca1\u6709\u679a\u4e3e\u7c7b\u578b\uff0c\u5e76\u4e14\u76ee\u524d\u6ca1\u6709\u76f4\u63a5\u7684\u65b9\u6cd5\u6765\u5f3a\u5236\u6267\u884c\u4e0e typescript \u76f8\u540c\u7684\u89c4\u5219\u3002<\/p>\n
go \u4e2d\u7684\u5e38\u89c1\u505a\u6cd5\u662f\u4f7f\u7528 \u53d1\u5e03\u7684\u5efa\u8bae\uff1a<\/p>\n
\u4f7f\u7528\u201c\u679a\u4e3e\u201d\u503c\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7c7b\u578b\u548c\u7c7b\u578b\u5e38\u91cf\uff1a<\/p>\n
type eventname string\n\nconst (\n    new_user       eventname = \"new_user\"\n    direct_message eventname = \"direct_message\"\n    disconnect     eventname = \"disconnect\"\n)<\/pre>\n
\u8fd9\u5141\u8bb8\u60a8\u5728 go \u4ee3\u7801\u4e2d\u6807\u8bb0\u60a8\u671f\u671b\u6b64\u7c7b\u503c\u7684\u4f4d\u7f6e\uff1a<\/p>\n
\/\/ example function signature :\nfunc onevent(e eventname, id int) error { ... }\n\n\/\/ example struct :\ntype connectionpayload struct {\n    eventname    eventname  `json:\"eventname\"`\n    eventpayload interface{} `json:\"eventpayload\"`\n}<\/pre>\n
\u5e76\u4e14\u5b83\u5c06\u963b\u6b62\u5c06\u666e\u901a string<\/code> \u5206\u914d\u7ed9 eventname<\/code><\/p>\n
var str string = \"foo\"\nvar ev eventname\n\nev = str \/\/ won't compile\nonevent(str, 42) \/\/ won't compile<\/pre>\n
\u5df2\u77e5\u7684\u9650\u5236\u662f\uff1a<\/p>\n
    \n
  • \u5728 go \u4e2d\uff0c\u603b\u662f\u6709\u4e00\u4e2a\u96f6\u503c\uff1a\n
    var ev eventname  \/\/ ev is \"\"<\/pre>\n<\/li>\n
  • \u5b57\u7b26\u4e32\u6587\u5b57\u4e0e\u7c7b\u578b\u53d8\u91cf\u4e0d\u540c\uff0c\u53ef\u4ee5\u8d4b\u503c\uff1a\n
    var ev eventname = \"something_else\"<\/pre>\n<\/li>\n
  • \u5141\u8bb8\u5f3a\u5236\u8f6c\u6362\uff1a\n
    var str string = \"foo\"\nvar ev eventname = eventname(str)<\/pre>\n<\/li>\n
  • \u4e0d\u68c0\u67e5\u89e3\u7ec4\uff1a\n
    jsn := []byte(`{\"eventName\":\"SOMETHING_ELSE\",\"eventPayload\":\"some message\"}`)\nerr := json.Unmarshal(jsn, &payload) \/\/ no error<\/pre>\n<\/li>\n<\/ul>\n
    \u5982\u679c\u60a8\u60f3\u8981\u8fdb\u884c\u66f4\u4e25\u683c\u7684\u68c0\u67e5\uff0c\u5219\u5fc5\u987b\u81ea\u5df1\u7f16\u5199\u9a8c\u8bc1\u5668\u6216\u81ea\u5b9a\u4e49\u89e3\u7ec4\u5668\u3002<\/p>\n
    \u4eca\u5929\u5173\u4e8e\u300aGo\uff1a\u5982\u4f55\u4f7f\u7528\u679a\u4e3e\u4f5c\u4e3a\u7c7b\u578b\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\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-207182","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207182","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=207182"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207182\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}