{"id":206100,"date":"2025-06-12T13:36:51","date_gmt":"2025-06-12T05:36:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206100\/"},"modified":"2025-06-12T13:36:51","modified_gmt":"2025-06-12T05:36:51","slug":"go-%e8%af%ad%e8%a8%80%e4%b8%ad-channel-%e4%b8%8e-select-%e7%9a%84%e5%8d%8f%e5%90%8c%e4%bd%bf%e7%94%a8%ef%bc%9a%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8-select-%e4%bc%98%e5%8c%96%e5%b9%b6%e5%8f%91%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206100\/","title":{"rendered":"Go \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528\uff1a\u5982\u4f55\u5229\u7528 select \u4f18\u5316\u5e76\u53d1\u7a0b\u5e8f\u7684\u6570\u636e\u901a\u4fe1\uff1f"},"content":{"rendered":"

\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60
\nGOLANG<\/span>\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765
\n\u300aGo \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528\uff1a\u5982\u4f55\u5229\u7528 select \u4f18\u5316\u5e76\u53d1\u7a0b\u5e8f\u7684\u6570\u636e\u901a\u4fe1\uff1f \u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230
\n<\/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,
\n,
\ngo \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528<\/strong>,\u5728 go \u8bed\u8a00\u4e2d\uff0cchannel \u662f\u7528\u4e8e\u5728\u5e76\u53d1\u7a0b\u5e8f\u4e2d\u8fdb\u884c\u6570\u636e\u901a\u4fe1\u7684\u7ba1\u9053\u3002\u5b83\u63d0\u4f9b\u4e86\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u7684\u673a\u5236\uff0c\u800c select \u5219\u662f\u7528\u4e8e\u4ece\u591a\u4e2a channel \u4e2d\u9009\u62e9\u8fdb\u884c\u63a5\u6536\u6216\u53d1\u9001\u64cd\u4f5c\u7684\u4e00\u9879\u673a\u5236\u3002,\u5982\u4f60\u6240\u63d0\u5230\u7684\u793a\u4f8b\u4e2d\uff0c\u4e24\u79cd\u5199\u6cd5\u5728 myselect \u51fd\u6570\u4e2d\u4e4d\u770b\u4e4b\u4e0b\u53ef\u80fd\u6ca1\u6709\u533a\u522b\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0cselect \u7684\u4f7f\u7528\u53ef\u4ee5\u5e26\u6765\u663e\u7740\u7684\u597d\u5904\u3002,
\nselect \u7684\u597d\u5904<\/strong>,
\n\u793a\u4f8b<\/strong>,\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u4f7f\u7528 select \u5904\u7406\u591a\u4e2a channel \u7684\u597d\u5904\uff1a,\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cmyselect \u51fd\u6570\u4e0d\u65ad\u76d1\u542c\u6765\u81ea ch1 \u548c ch2 channel \u7684\u6570\u636e\u3002\u5f53\u5176\u4e2d\u4efb\u4f55\u4e00\u4e2a channel \u51c6\u5907\u597d\u88ab\u8bfb\u53d6\u65f6\uff0c\u51fd\u6570\u90fd\u4f1a\u7acb\u5373\u5904\u7406\u8be5\u6570\u636e\uff0c\u4ece\u800c\u907f\u514d\u963b\u585e\u6216\u7ade\u4e89\u6761\u4ef6\u3002,\u4ee5\u4e0a\u5c31\u662f\u300aGo \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528\uff1a\u5982\u4f55\u5229\u7528 select \u4f18\u5316\u5e76\u53d1\u7a0b\u5e8f\u7684\u6570\u636e\u901a\u4fe1\uff1f \u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff01,
\n\u5904\u7406\u591a\u4e2a channel\uff1a<\/strong>select \u53ef\u4ee5\u7528\u4e8e\u4ece\u591a\u4e2a channel \u4e2d\u9009\u62e9\u7b2c\u4e00\u4e2a\u5177\u6709\u53ef\u63a5\u6536\u6570\u636e\u7684 channel\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5e0c\u671b\u76d1\u542c\u6765\u81ea\u591a\u4e2a\u6765\u6e90\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528 select \u540c\u65f6\u4ece\u8fd9\u4e9b channel \u4e2d\u8bfb\u53d6\uff0c\u800c\u4e0d\u5fc5\u4e3a\u6bcf\u4e2a channel \u4f7f\u7528\u5355\u72ec\u7684 for \u5faa\u73af\u3002,
\n\u975e\u963b\u585e\u63a5\u6536\uff1a<\/strong>select \u63d0\u4f9b\u4e86\u4e00\u79cd\u975e\u963b\u585e\u7684\u65b9\u5f0f\u6765\u63a5\u6536 channel \u4e2d\u7684\u6570\u636e\u3002\u4f7f\u7528 <-ch \u53ef\u80fd\u4f1a\u963b\u585e\u5f53\u524d\u6267\u884c\uff0c\u800c select \u5141\u8bb8\u5728\u8bfb\u53d6\u4e00\u4e2a channel \u7684\u540c\u65f6\u7ee7\u7eed\u6267\u884c\u540e\u7eed\u4ee3\u7801\u3002,
\n\u907f\u514d\u7ade\u4e89\u6761\u4ef6\uff1a<\/strong>\u5728\u9ad8\u5e76\u53d1\u7684\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528\u591a\u4e2a for \u5faa\u73af\u8bfb\u53d6\u591a\u4e2a channel \u53ef\u80fd\u4f1a\u5bfc\u81f4\u7ade\u4e89\u6761\u4ef6\u3002\u4f7f\u7528 select \u53ef\u4ee5\u9632\u6b62\u8fd9\u79cd\u60c5\u51b5\uff0c\u56e0\u4e3a\u5b83\u5141\u8bb8\u5728\u534f\u8c03\u8bfb\u53d6\u64cd\u4f5c\u7684\u60c5\u51b5\u4e0b\u516c\u5e73\u5730\u8bbf\u95ee channel\u3002,go \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528,\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60
\nGOLANG<\/span>\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765
\n\u300aGo \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528\uff1a\u5982\u4f55\u5229\u7528 select \u4f18\u5316\u5e76\u53d1\u7a0b\u5e8f\u7684\u6570\u636e\u901a\u4fe1\uff1f \u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230
\n<\/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,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> Go \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528\uff1a\u5982\u4f55\u5229\u7528 select \u4f18\u5316\u5e76\u53d1\u7a0b\u5e8f\u7684\u6570\u636e\u901a\u4fe1\uff1f <\/span><\/p>\n

Go \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528\uff1a\u5982\u4f55\u5229\u7528 select \u4f18\u5316\u5e76\u53d1\u7a0b\u5e8f\u7684\u6570\u636e\u901a\u4fe1\uff1f <\/h1>\n

2024-11-03 16:07:05<\/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\u300aGo \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528\uff1a\u5982\u4f55\u5229\u7528 select \u4f18\u5316\u5e76\u53d1\u7a0b\u5e8f\u7684\u6570\u636e\u901a\u4fe1\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

<\/p>\n

go \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528<\/strong><\/p>\n

\u5728 go \u8bed\u8a00\u4e2d\uff0cchannel \u662f\u7528\u4e8e\u5728\u5e76\u53d1\u7a0b\u5e8f\u4e2d\u8fdb\u884c\u6570\u636e\u901a\u4fe1\u7684\u7ba1\u9053\u3002\u5b83\u63d0\u4f9b\u4e86\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u7684\u673a\u5236\uff0c\u800c select \u5219\u662f\u7528\u4e8e\u4ece\u591a\u4e2a channel \u4e2d\u9009\u62e9\u8fdb\u884c\u63a5\u6536\u6216\u53d1\u9001\u64cd\u4f5c\u7684\u4e00\u9879\u673a\u5236\u3002<\/p>\n

\u5982\u4f60\u6240\u63d0\u5230\u7684\u793a\u4f8b\u4e2d\uff0c\u4e24\u79cd\u5199\u6cd5\u5728 myselect \u51fd\u6570\u4e2d\u4e4d\u770b\u4e4b\u4e0b\u53ef\u80fd\u6ca1\u6709\u533a\u522b\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0cselect \u7684\u4f7f\u7528\u53ef\u4ee5\u5e26\u6765\u663e\u7740\u7684\u597d\u5904\u3002<\/p>\n

select \u7684\u597d\u5904<\/strong><\/p>\n

    \n
  • \u975e\u963b\u585e\u63a5\u6536\uff1a<\/strong>select \u63d0\u4f9b\u4e86\u4e00\u79cd\u975e\u963b\u585e\u7684\u65b9\u5f0f\u6765\u63a5\u6536 channel \u4e2d\u7684\u6570\u636e\u3002\u4f7f\u7528 <-ch \u53ef\u80fd\u4f1a\u963b\u585e\u5f53\u524d\u6267\u884c\uff0c\u800c select \u5141\u8bb8\u5728\u8bfb\u53d6\u4e00\u4e2a channel \u7684\u540c\u65f6\u7ee7\u7eed\u6267\u884c\u540e\u7eed\u4ee3\u7801\u3002<\/li>\n
  • \u5904\u7406\u591a\u4e2a channel\uff1a<\/strong>select \u53ef\u4ee5\u7528\u4e8e\u4ece\u591a\u4e2a channel \u4e2d\u9009\u62e9\u7b2c\u4e00\u4e2a\u5177\u6709\u53ef\u63a5\u6536\u6570\u636e\u7684 channel\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5e0c\u671b\u76d1\u542c\u6765\u81ea\u591a\u4e2a\u6765\u6e90\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528 select \u540c\u65f6\u4ece\u8fd9\u4e9b channel \u4e2d\u8bfb\u53d6\uff0c\u800c\u4e0d\u5fc5\u4e3a\u6bcf\u4e2a channel \u4f7f\u7528\u5355\u72ec\u7684 for \u5faa\u73af\u3002<\/li>\n
  • \u907f\u514d\u7ade\u4e89\u6761\u4ef6\uff1a<\/strong>\u5728\u9ad8\u5e76\u53d1\u7684\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528\u591a\u4e2a for \u5faa\u73af\u8bfb\u53d6\u591a\u4e2a channel \u53ef\u80fd\u4f1a\u5bfc\u81f4\u7ade\u4e89\u6761\u4ef6\u3002\u4f7f\u7528 select \u53ef\u4ee5\u9632\u6b62\u8fd9\u79cd\u60c5\u51b5\uff0c\u56e0\u4e3a\u5b83\u5141\u8bb8\u5728\u534f\u8c03\u8bfb\u53d6\u64cd\u4f5c\u7684\u60c5\u51b5\u4e0b\u516c\u5e73\u5730\u8bbf\u95ee channel\u3002<\/li>\n<\/ul>\n

    \u793a\u4f8b<\/strong><\/p>\n

    \u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u4f7f\u7528 select \u5904\u7406\u591a\u4e2a channel \u7684\u597d\u5904\uff1a<\/p>\n

    func MySelect(ch1 chan int, ch2 chan int) {\n    for {\n        select {\n        case a := <-ch1:\n            fmt.Println(\"Received from channel 1:\", a)\n        case b := <-ch2:\n            fmt.Println(\"Received from channel 2:\", b)\n        default:\n            \/\/ \u5982\u679c\u6ca1\u6709 channel \u51c6\u5907\u597d\u88ab\u8bfb\u53d6\uff0c\u5219\u6267\u884c\u6b64\u4ee3\u7801\u5757\n        }\n    }\n}<\/pre>\n
    \u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cmyselect \u51fd\u6570\u4e0d\u65ad\u76d1\u542c\u6765\u81ea ch1 \u548c ch2 channel \u7684\u6570\u636e\u3002\u5f53\u5176\u4e2d\u4efb\u4f55\u4e00\u4e2a channel \u51c6\u5907\u597d\u88ab\u8bfb\u53d6\u65f6\uff0c\u51fd\u6570\u90fd\u4f1a\u7acb\u5373\u5904\u7406\u8be5\u6570\u636e\uff0c\u4ece\u800c\u907f\u514d\u963b\u585e\u6216\u7ade\u4e89\u6761\u4ef6\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662f\u300aGo \u8bed\u8a00\u4e2d channel \u4e0e select \u7684\u534f\u540c\u4f7f\u7528\uff1a\u5982\u4f55\u5229\u7528 select \u4f18\u5316\u5e76\u53d1\u7a0b\u5e8f\u7684\u6570\u636e\u901a\u4fe1\uff1f \u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff01<\/p>\n
    \n
    \n <\/dt>\n
    \n   \u8d2d\u4e70 LinkedIn \u5e10\u6237\n <\/dd>\n<\/dl>\n
    \n
    \n <\/dt>\n
    \n   \u5408\u540c\u6d4b\u8bd5\uff1a\u73b0\u4ee3\u8f6f\u4ef6\u56e2\u961f\u7684\u7efc\u5408\u6307\u5357\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
    \u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60 GOLA...<\/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-206100","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206100","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=206100"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206100\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}