{"id":44212,"date":"2023-10-06T21:43:51","date_gmt":"2023-05-09T09:56:27","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90golang%e3%80%91%e8%87%aa%e5%ae%9a%e4%b9%89%e9%94%99%e8%af%af\/"},"modified":"2024-05-04T03:09:49","modified_gmt":"2024-05-03T19:09:49","slug":"%e3%80%90golang%e3%80%91%e8%87%aa%e5%ae%9a%e4%b9%89%e9%94%99%e8%af%af","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90golang%e3%80%91%e8%87%aa%e5%ae%9a%e4%b9%89%e9%94%99%e8%af%af\/","title":{"rendered":"\u3010Golang\u3011\u81ea\u5b9a\u4e49\u9519\u8bef"},"content":{"rendered":"<h1>\u3010Golang\u3011\u81ea\u5b9a\u4e49\u9519\u8bef<\/h1>\n<p>Go\u8bed\u8a00\u7684\u57fa\u7840\u5b66\u4e60\u301c\u4ece\u5b66\u4e60Web\u5e94\u7528\u5f00\u53d1\u5230\u7ed3\u675f\uff0c\u73b0\u5728\u8fdb\u884c\u590d\u4e60\u603b\u7ed3\u3002\u4ece\u57fa\u7840\u5230\u5e94\u7528\u7684\u5b66\u4e60\u3002<\/p>\n<pre class=\"post-pre\"><code>\/\/\u30ab\u30b9\u30bf\u30e0\u30a8\u30e9\u30fc\r\n\/\/Stringer\u540c\u69d8error\u3082\u3042\u308b\u3002\r\n\/\/interface3\u306e\u4f7f\u3044\u65b9\r\n\r\n\/*Error\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u578b\u3092\u307e\u3068\u3081\u3066\u3044\u308b\r\ntype error interface {\r\n    Error() string\r\n}\r\n*\/\r\n\r\npackage main \r\n\r\nimport (\r\n    \"fmt\"\r\n)\r\n\r\n\/\/4\r\n\/\/\u30ab\u30b9\u30bf\u30e0\u30a8\u30e9\u30fc\u306e\u540d\u524d\r\ntype UserNotFound struct {\r\n    Username string\r\n}\r\n\r\n\r\n\/\/5\r\n\/\/\u7279\u6b8a\u30e1\u30bd\u30c3\u30c9\r\n\/\/\u30a8\u30e9\u30fc\u306e\u51fa\u529b\u3092\u5909\u3048\u308b\r\n\/\/\u30dd\u30a4\u30f3\u30bf\u578b\u3067\u6307\u5b9a\u3059\u308b\u3002\r\nfunc (e *UserNotFound) Error() string {\r\n    \/\/\u3053\u308c\u304c\u51fa\u529b\u3055\u308c\u308b\r\n    return fmt.Sprintf(\"User not found: %v.\\n\", e.Username)\r\n}\r\n\r\n\/\/2\r\n\/\/\u30a8\u30e9\u30fc\u3092\u8fd4\u3059\u95a2\u6570\r\n\/\/\u8fd4\u308a\u5024\u3092\u30a8\u30e9\u30fc\u578b\u306b\u3059\u308b\r\nfunc MyFunc() error {\r\n    ok := false\r\n    if !ok {\r\n        \/\/3\r\n        \/\/\u30a8\u30e9\u30fc\u3092\u8fd4\u3059\r\n        \/\/\u30a8\u30e9\u30fc\u3092\u5b9a\u7fa9\u3059\u308b\u6642\u306f\u3001&amp;\u3092\u3064\u3051\u308b\r\n        \/\/&amp;\u306f\u306a\u304f\u3066\u3082\u5b9f\u884c\u306f\u3067\u304d\u308b\u304c\u3001\u30eb\u30fc\u30eb\u3068\u3057\u3066\u3064\u3051\u308b\u3002\r\n        \/\/\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3067\u30d0\u30b0\u306e\u539f\u56e0\u306b\u306a\u308b\r\n        \/\/\u30a2\u30c9\u30ec\u30b9\u3067\u6bd4\u8f03\u3059\u308b\r\n        return &amp;UserNotFound{Username: \"mike\"}\r\n    }\r\n    return nil\r\n}\r\n\r\nfunc main() {\r\n    \/\/&amp;UserNotFound{Username: \"mike\"}\u3067&amp;\u3092\u3064\u3051\u308b\u7406\u7531\r\n    e1 := &amp;UserNotFound{\"mike\"}\r\n    e2 := &amp;UserNotFound{\"mike\"}\r\n    fmt.Println(e1 == e2)\r\n    \/\/&gt;&gt;false\r\n    \/\/&amp;\u304c\u306a\u3051\u308c\u3070True\u306b\u306a\u308b\r\n    \/\/e1\u3068e2\u306f\u9055\u3046\u3068\u3044\u3046\u4e8b\u3002\u7570\u306a\u308b\u30a8\u30e9\u30fc\u3002\u30a2\u30c9\u30ec\u30b9\u3067\u6bd4\u8f03\u3057\u306a\u3044\u3068\u540c\u3058\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3002\r\n\r\n\r\n    \/\/1\r\n    \/\/\u3082\u3057\u30a8\u30e9\u30fc\u304c\u5e30\u3063\u3066\u304d\u305f\u3089\u30a8\u30e9\u30fc\u3092\u51fa\u529b\r\n    \/\/\u30a8\u30e9\u30fc\u3058\u3083\u306a\u304b\u3063\u305f\u3089nil\u3092\u8fd4\u3059\r\n    err := MyFunc()\r\n    if err != nil {\r\n        fmt.Println(err)\r\n    }\r\n}\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u3010Golang\u3011\u81ea\u5b9a\u4e49\u9519\u8bef Go\u8bed\u8a00\u7684\u57fa\u7840\u5b66\u4e60\u301c\u4ece\u5b66\u4e60Web\u5e94\u7528\u5f00\u53d1\u5230\u7ed3\u675f\uff0c\u73b0\u5728\u8fdb\u884c\u590d\u4e60\u603b\u7ed3\u3002\u4ece\u57fa\u7840\u5230\u5e94\u7528\u7684\u5b66 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-44212","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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