{"id":207688,"date":"2025-07-08T08:30:18","date_gmt":"2025-07-08T00:30:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207688\/"},"modified":"2025-07-08T08:30:18","modified_gmt":"2025-07-08T00:30:18","slug":"%e4%b8%8b%e9%9d%a2%e7%9a%84%e5%9c%ba%e6%99%af%e4%b8%ad%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e8%bf%99%e4%ba%9bgoroutines%e7%9a%84%e9%80%9a%e4%bf%a1","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207688\/","title":{"rendered":"\u4e0b\u9762\u7684\u573a\u666f\u4e2d\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e9bgoroutines\u7684\u901a\u4fe1"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u4e0b\u9762\u7684\u573a\u666f\u4e2d\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e9bgoroutines\u7684\u901a\u4fe1<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-24 17:42:23<\/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\u4e0b\u9762\u7684\u573a\u666f\u4e2d\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e9bgoroutines\u7684\u901a\u4fe1\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

\u7ed9\u5b9a\u4e00\u4e2a\u901a\u9053\u5207\u7247([]chan{})\uff0c\u5982\u4f55\u5b9e\u73b0\u6211\u4eec\u4ece\u901a\u9053\u6570\u7ec4\u4e2d\u63a5\u53d7\u8fd9\u4e9b\u6d88\u606f\u3002<\/p>\n

\u6211\u8003\u8651\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\uff0c\u4f46\u5b83\u4eec\u53ef\u4ee5\u89e3\u51b3\u6211\u7684\u95ee\u9898\uff1a<\/p>\n

    \n
  1. \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u201cselect\u201d\uff0c\u4f46\u662f\u5207\u7247\u7684\u957f\u5ea6\u4e0d\u56fa\u5b9a\uff0c\u6240\u4ee5case\u7684\u6570\u91cf\u4e5f\u4e0d\u56fa\u5b9a\u3002<\/li>\n
  2. \u6211\u4eec\u53ef\u4ee5\u904d\u5386\u5207\u7247\uff0c\u4f46\u662f\u5f53\u6536\u4e0d\u5230\u6d88\u606f\u65f6\u4f1a\u5bfc\u81f4\u963b\u585e\u3002<\/li>\n<\/ol>\n

    <\/p>\n

    \u6b63\u786e\u7b54\u6848<\/h2>\n

    <\/p>\n

    \u60a8\u53ef\u4ee5\u4f7f\u7528\u53cd\u6620\u5305\u6765\u9009\u62e9\u52a8\u6001\u6570\u5b57\u9891\u9053\u3002<\/p>\n

    package main\n\nimport (\n    \"fmt\"\n    \"reflect\"\n    \"time\"\n)\n\nfunc main() {\n    \/\/ Create a slice of channels\n    channels := make([]chan string, 5)\n\n    \/\/ Initialize the channels\n    for i := range channels {\n        channels[i] = make(chan string)\n    }\n\n    \/\/ Send messages to the channels\n    go func() {\n        for _, ch := range channels {\n            time.Sleep(time.Second)\n            ch <- \"hello\"\n        }\n    }()\n\n    \/\/ Use reflect.Select to select on a set of channels in the slice\n    for {\n        cases := make([]reflect.SelectCase, len(channels))\n        for i, ch := range channels {\n            cases[i] = reflect.SelectCase{\n                Dir:  reflect.SelectRecv,\n                Chan: reflect.ValueOf(ch),\n            }\n        }\n\n        \/\/ Wait for a message to be received on one of the channels\n        i, v, ok := reflect.Select(cases)\n\n        if !ok {\n            fmt.Println(\"Channel closed\")\n            continue\n        }\n\n        \/\/ Print the received message and the index of the channel\n        fmt.Printf(\"Received %q from channel %d\\n\", v.Interface(), i)\n    }\n}<\/pre>\n
    \u4eca\u5929\u5173\u4e8e\u300a\u4e0b\u9762\u7684\u573a\u666f\u4e2d\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e9bgoroutines\u7684\u901a\u4fe1\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-207688","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207688","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=207688"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207688\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207688"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}