{"id":18564,"date":"2025-10-24T08:04:19","date_gmt":"2025-10-24T08:04:19","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=18564"},"modified":"2025-10-24T08:04:19","modified_gmt":"2025-10-24T08:04:19","slug":"go-conference-2025%e3%81%ae%e3%83%8f%e3%82%a4%e3%83%a9%e3%82%a4%e3%83%88-yappli-tech-blog","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/18564\/","title":{"rendered":"Go Conference 2025\u306e\u30cf\u30a4\u30e9\u30a4\u30c8 &#8211; Yappli Tech Blog"},"content":{"rendered":"\n<\/p>\n<div>\n<p>\u3053\u3093\u306b\u3061\u306f\u3002CX\u958b\u767a\u90e8\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30b0\u30eb\u30fc\u30d7\u3067\u3001\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3092\u3057\u3066\u3044\u308b\u52a0\u7d0d\u3067\u3059\u3002<br \/>\n\u5c11\u3057\u3001\u671f\u9593\u304c\u7a7a\u3044\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u304c\u3001\u5148\u65e5\u3001Go Conference 2025\u304c\u958b\u50ac\u3055\u308c\u3001\u5f0a\u793e\u3082\u30b9\u30dd\u30f3\u30b5\u30fc\u3068\u3057\u3066\u30a4\u30d9\u30f3\u30c8\u306e\u76db\u308a\u4e0a\u3052\u306e\u4e00\u7aef\u3092\u62c5\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u5f0a\u793e\u306eGo\u30a8\u30f3\u30b8\u30cb\u30a2\u3082\u4f55\u540d\u304b\u53c2\u6226\u3057\u307e\u3057\u305f\u306e\u3067\u3001\u4eca\u56de\u306f\u305d\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u305f\u3061\u304c\u3001\u6c17\u306b\u306a\u3063\u305f\u30bb\u30c3\u30b7\u30e7\u30f3\u7b49\u3092\u30d4\u30c3\u30af\u30a2\u30c3\u30d7\u3057\u3066\u7d39\u4ecb\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u3093\u306b\u3061\u306f\u3001\u30b5\u30fc\u30d0\u30b5\u30a4\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u4e2d\u5ddd(@tkdev0728)\u3067\u3059\u3002<\/p>\n<p>\u666e\u6bb5\u306e\u696d\u52d9\u3067\u3088\u304fGo\u3092\u66f8\u3044\u3066\u3044\u308b\u306e\u3067\u3059\u304c\u77e5\u3089\u306a\u3044\u3053\u3068\u3082\u591a\u304f\u3001\u3082\u3063\u3068\u8272\u3005\u306a\u3053\u3068\u3092\u77e5\u308a\u305f\u3044\u3068\u601d\u3063\u3066Go Conflence\u306b\u53c2\u52a0\u3057\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u5b66\u3073\u304c\u591a\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u4eca\u56de\u306f\u7279\u306b\u500b\u4eba\u7684\u306b\u8208\u5473\u3092\u6301\u3063\u305f\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"\u6982\u8981\">\u6982\u8981<\/h2>\n<p><a target=\"_blank\" href=\"https:\/\/speakerdeck.com\/shohata\/panictoxiang-kihe-ugokai-fa-nilawaydetan-rujian-tao-sarerunilcan-zhao-tosonodui-ce\">https:\/\/speakerdeck.com\/shohata\/panictoxiang-kihe-ugokai-fa-nilawaydetan-rujian-tao-sarerunilcan-zhao-tosonodui-ce<\/a><\/p>\n<p>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306bnil\u53c2\u7167\u306b\u3088\u308bpanic\u3092\u691c\u77e5\u3057\u3066\u304f\u308c\u308b\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30ebnilaway\u306e\u7d39\u4ecb\u3067\u3057\u305f\u3002<\/p>\n<p>\u6ce8\u610f\u70b9\u3068\u3057\u3066nilaway\u306f\u73fe\u5728\u958b\u767a\u4e2d\u3067\u3042\u308a\u3001\u8aa4\u691c\u77e5\u3084\u4e92\u63db\u6027\u3092\u7834\u308b\u5909\u66f4\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2 id=\"\u8208\u5473\u3092\u6301\u3063\u305f\u304d\u3063\u304b\u3051\">\u8208\u5473\u3092\u6301\u3063\u305f\u304d\u3063\u304b\u3051<\/h2>\n<p>Go\u3092\u66f8\u3044\u3066\u3044\u308b\u4eba\u306a\u3089\u4e00\u5ea6\u306f\u610f\u56f3\u3057\u306a\u3044nil\u53c2\u7167\u306b\u906d\u9047\u3057\u3066\u3057\u307e\u3063\u305f\u3053\u3068\u306f\u3042\u308b\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002\u3082\u3061\u308d\u3093\u79c1\u3082\u305d\u306e\u4e00\u4eba\u3067\u3059\u3002<\/p>\n<p>\u610f\u56f3\u3057\u306a\u3044nil\u53c2\u7167\u3092\u3057\u3066\u3057\u307e\u3046\u3068panic\u304c\u8d77\u304d\u3066\u3057\u307e\u3046\u306e\u3067\u3001\u30ea\u30ea\u30fc\u30b9\u524d\u3084\u5b9f\u88c5\u6bb5\u968e\u3067\u691c\u77e5\u3057\u305f\u3044\u3068\u601d\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u305d\u306e\u305f\u3081\u7279\u306b\u3053\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u304c\u6c17\u306b\u306a\u3063\u3066\u805e\u3044\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"\u4ed5\u7d44\u307f\">\u4ed5\u7d44\u307f<\/h2>\n<p>\u524d\u63d0\u3068\u3057\u3066nil\u53c2\u7167\u3092\u5b8c\u5168\u306b\u691c\u51fa\u3059\u308b\u3053\u3068\u306f\u96e3\u3057\u3044\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u81ea\u5206\u3082\u3069\u3046\u3044\u3046\u4ed5\u7d44\u307f\u3067\u5b9f\u73fe\u3057\u3066\u3044\u308b\u306e\u304b\u8208\u5473\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u8a73\u3057\u304f\u306f\u767a\u8868\u8005\u306e\u65b9\u306e\u30b9\u30e9\u30a4\u30c9\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u8a73\u7d30\u306f\u5272\u611b\u3057\u307e\u3059\u304c\u3001\u8981\u7d04\u3059\u308b\u3068nil\u304c\u3069\u3053\u3067\u751f\u6210\u3055\u308c\u3066\u3069\u3053\u306b\u3044\u304f\u306e\u304b\u306e\u4f1d\u642c\u7d4c\u8def\u3092\u8ffd\u8de1\u3057\u3001nil\u751f\u6210\u7b87\u6240\u304b\u3089nil\u53c2\u7167\u7b87\u6240\u307e\u3067\u306e\u7d4c\u8def\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306b\u5831\u544a\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<h2 id=\"\u5b9f\u969b\u306b\u52d5\u304b\u3057\u3066\u307f\u305f\">\u5b9f\u969b\u306b\u52d5\u304b\u3057\u3066\u307f\u305f<\/h2>\n<p>nilaway\u306e\u73fe\u6642\u70b9\u3067\u306e\u7cbe\u5ea6\u304c\u6c17\u306b\u306a\u308a\u3001\u5b9f\u969b\u306b\u5f0a\u793e\u306e\u30ea\u30dd\u30b8\u30c8\u30ea\u3067\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u7d5e\u3063\u3066\u5b9f\u884c\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<p>\u3042\u304f\u307e\u3067\u4f53\u611f\u30ec\u30d9\u30eb\u3067\u306f\u78ba\u304b\u306b\u8aa4\u691c\u77e5\u3082\u3042\u308a\u307e\u3057\u305f\u304c\u5b9f\u969b\u306bnil\u53c2\u7167\u304c\u8d77\u304d\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u90e8\u5206\u3082\u691c\u77e5\u3067\u304d\u3066\u3088\u304b\u3063\u305f\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u3053\u308c\u306f\u500b\u4eba\u7684\u306a\u8003\u3048\u306b\u306f\u306a\u308a\u307e\u3059\u304c\u3001panic\u306b\u306a\u308a\u5f97\u308b\u90e8\u5206\u3092\u691c\u77e5\u3057\u3066\u304f\u308c\u308b\u3053\u3068\u3092\u601d\u3046\u3068\u3001\u898b\u9003\u3057\u3088\u308a\u3082\u7a7a\u632f\u308a\u306e\u65b9\u304c\u3044\u3044\u3068\u601d\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>claude code\u306a\u3069\u3092\u4f7f\u3063\u3066\u9664\u5916\u8a2d\u5b9a\u3092\u5165\u308c\u305f\u308a\u3001reviewdog\u3092\u6d3b\u7528\u3057\u3066\u9069\u7528\u7bc4\u56f2\u3092PR\u306e\u5dee\u5206\u306b\u7d5e\u308b\u306a\u3069\u5de5\u592b\u3059\u308b\u3053\u3068\u3067\u6d3b\u7528\u3067\u304d\u308b\u3068\u611f\u3058\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"\u611f\u60f3\">\u611f\u60f3<\/h2>\n<p>\u3082\u3063\u3068\u8272\u3005\u306a\u3053\u3068\u3092\u77e5\u308a\u305f\u3044\u3068\u3044\u3046\u6f20\u7136\u3068\u3057\u305f\u601d\u3044\u3067\u53c2\u52a0\u3057\u305fGo Conflence\u3067\u3057\u305f\u304c\u3001\u307e\u3055\u306b\u8ab2\u984c\u306b\u601d\u3063\u3066\u3044\u305f\u90e8\u5206\u306b\u3064\u3044\u3066\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3068\u305d\u306e\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u77e5\u308c\u305f\u306e\u3067\u6700\u9ad8\u3067\u3057\u305f\u3002<\/p>\n<p>\u3068\u540c\u6642\u306b\u805e\u304f\u3060\u3051\u3058\u3083\u306a\u304f\u3066\u5b9f\u969b\u306b\u52d5\u304b\u3057\u3066\u307f\u308b\u3053\u3068\u306e\u5927\u5207\u3055\u3082\u611f\u3058\u307e\u3057\u305f\u3002<\/p>\n<hr\/>\n<p>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u897f\u6751\u3067\u3059\u3002Go\u8a00\u8a9e\u597d\u304d\u306a\u5272\u306bGo Conference\u521d\u53c2\u6226\u3067\u3057\u305f\u304c\u3001\u3044\u308d\u3044\u308d\u5fa9\u7fd2\u3057\u305f\u3044\u5185\u5bb9\u6301\u3061\u5e30\u308c\u305f\u306e\u3067\u3001\u4eca\u56de\u305d\u306e\u4e00\u90e8\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h2 id=\"\u79c1\u304c\u6c17\u306b\u306a\u3063\u305f\u5185\u5bb9\">\u79c1\u304c\u6c17\u306b\u306a\u3063\u305f\u5185\u5bb9<\/h2>\n<p><a target=\"_blank\" href=\"https:\/\/speakerdeck.com\/kaorumuta\/go-conference-2025\">https:\/\/speakerdeck.com\/kaorumuta\/go-conference-2025<\/a><\/p>\n<p>modernize package\u306f\u30e2\u30c0\u30f3\u306a\u66f8\u304d\u65b9\u306b\u4fee\u6b63\u3057\u3066\u304f\u308c\u305f\u308a\u63d0\u6848\u3057\u3066\u304f\u308c\u305f\u308a\u3059\u308bpackage\u3067\u3059\u3002\u6700\u65b0\u306e\u8a18\u6cd5\u3092\u968f\u6642\u53d6\u308a\u5165\u308c\u308b\u3068\u5404\u6240\u3067\u66f8\u304d\u65b9\u304c\u6563\u3089\u3070\u3063\u3066\u304f\u308b\u306e\u3067\u3001\u3053\u306epackage\u3067\u66f8\u304d\u65b9\u3092\u7d71\u4e00\u3067\u304d\u308b\u306e\u304b\u306a\u3068\u3044\u3046\u671f\u5f85\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u306a\u306e\u3067\u500b\u4eba\u7684\u306b\u3042\u3068\u3067\u5fa9\u7fd2\u3057\u3088\u3046\u3068\u601d\u3063\u3066\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u805e\u3044\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<h3 id=\"modernize-package\u3068\u306f\">modernize package\u3068\u306f<\/h3>\n<p><a target=\"_blank\" href=\"https:\/\/pkg.go.dev\/golang.org\/x\/tools\/gopls\/internal\/analysis\/modernize\">https:\/\/pkg.go.dev\/golang.org\/x\/tools\/gopls\/internal\/analysis\/modernize<\/a><\/p>\n<p>modernize \u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u3001gopls\uff08Go\u516c\u5f0f\u306e\u8a00\u8a9e\u30b5\u30fc\u30d0\u30fc\uff09\u306e analysis \u30d1\u30c3\u30b1\u30fc\u30b8\u7fa4\u306e\u4e2d\u306b\u542b\u307e\u308c\u308b\u30a2\u30ca\u30e9\u30a4\u30b6\u30fc\u306e1\u3064\u3067\u3001Go\u30b3\u30fc\u30c9\u3092\u3088\u308a\u30e2\u30c0\u30f3\u306a\u69cb\u6587\u30fbAPI\u306e\u66f8\u304d\u65b9\u306b\u81ea\u52d5\u4fee\u6b63\u30fb\u63d0\u6848\u3057\u3066\u304f\u308c\u308b\u30c4\u30fc\u30eb\u3067\u3059\u3002<\/p>\n<h3 id=\"\u3069\u3046\u4fee\u6b63\u3057\u3066\u304f\u308c\u308b\u304b\">\u3069\u3046\u4fee\u6b63\u3057\u3066\u304f\u308c\u308b\u304b<\/h3>\n<p>\u5177\u4f53\u7684\u306b\u3069\u3046\u4fee\u6b63\u3057\u3066\u304f\u308c\u308b\u304b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306fslide\u306e9\u30da\u30fc\u30b8\u306b\u3042\u3063\u305f\u3082\u306e\u3067\u3059\u304c\u3053\u3093\u306a\u611f\u3058\u3067\u3059\u3002<br \/>\n\u4f8b\u3048\u3070<br \/>\n\u3053\u308c\u3092<\/p>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\">\ns := []<span class=\"synType\">string<\/span>{<span class=\"synConstant\">\"A\"<\/span>, <span class=\"synConstant\">\"B\"<\/span>, <span class=\"synConstant\">\"C\"<\/span>}\n<span class=\"synStatement\">for<\/span> _, v = <span class=\"synStatement\">range<\/span> s {\n    v := v \n    \n        <span class=\"synStatement\">go<\/span> <span class=\"synType\">func<\/span>() {\n            fmt.Println(v)<span class=\"synError\"> <\/span>\n        }()\n}\n\n\n\n\n\n\n\n\n\n\n\n<\/pre>\n<p>\u3053\u3046<\/p>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\">\ns := []<span class=\"synType\">string<\/span>{<span class=\"synConstant\">\"A\"<\/span>, <span class=\"synConstant\">\"B\"<\/span>, <span class=\"synConstant\">\"C\"<\/span>}\n<span class=\"synStatement\">for<\/span> _, v = <span class=\"synStatement\">range<\/span> s {\n     \n        <span class=\"synStatement\">go<\/span> <span class=\"synType\">func<\/span>() {\n            fmt.Println(v)<span class=\"synError\"> <\/span>\n        }()\n}\n\n\n\n\n\n\nA\nB\nC\n<\/pre>\n<p>\u4fee\u6b63\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u306f\u3001\u4e0a\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306b\u3042\u308b\u3088\u3046\u306a\u3001for\u6587\u306e\u8981\u7d20\u306e\u30dd\u30a4\u30f3\u30bf\u3092\u53d6\u5f97\u3059\u308b\u5fc5\u8981\u306a\u304f\u306a\u3063\u305fGo1.22\u304b\u3089\u306e\u5909\u66f4\u306e\u66f8\u304d\u65b9\u3092\u4fee\u6b63\u3057\u3066\u304f\u308c\u308b\u30a2\u30ca\u30e9\u30a4\u30b6\u30fc\u306e\u4e00\u90e8\u306eforvar\u30b3\u30fc\u30c9\u304c\u89e3\u8aac\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u5192\u982d\u306b\u300cmodernize \u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u3001gopls\u306e analysis \u30d1\u30c3\u30b1\u30fc\u30b8\u7fa4\u306e\u4e2d\u306b\u542b\u307e\u308c\u308b\u30a2\u30ca\u30e9\u30a4\u30b6\u30fc\u306e1\u3064\u300d\u3068\u8aac\u660e\u3057\u307e\u3057\u305f\u304c\u3001<\/p>\n<p>\u500b\u4eba\u7684\u306b\u5fa9\u7fd2\u3059\u308b\u306b\u3042\u305f\u3063\u3066\u53c2\u8003\u306b\u306a\u3063\u305f\u306e\u304c\u3001 <a target=\"_blank\" href=\"https:\/\/prtimes.jp\/main\/html\/rd\/p\/000000079.000007187.html\">\u5f0a\u793e\u306e\u6280\u8853\u9867\u554f\u3092\u3057\u3066\u3044\u305f\u3060\u3044\u3066\u308btenntenn\u3055\u3093<\/a> \u306e <a target=\"_blank\" href=\"https:\/\/zenn.dev\/tenntenn\/books\/d168faebb1a739\/viewer\/9d590e\">\u3053\u3061\u3089\u306e\u8a18\u4e8b<\/a> \u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>analysis \u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30eb\u304c\u62b1\u3048\u308b\u554f\u984c\u3092\u89e3\u6c7a\u3067\u304d\u308b\n<ul>\n<li>\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30eb\u306e\u591a\u304f\u306f\u3001\u62bd\u8c61\u69cb\u6587\u6728\u3084\u578b\u60c5\u5831\u3092\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u3082\u3068\u306b\u53d6\u5f97\u3059\u308b\u90e8\u5206\u306f\u5171\u901a\u3057\u3066\u3044\u308b<\/li>\n<li>\u91cd\u8907\u3057\u305f\u51e6\u7406\u304c\u3042\u308b\u3068\u8907\u6570\u306e\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30eb\u3092\u5b9f\u884c\u3059\u308b\u3068\u305d\u306e\u5206\u3060\u3051\u7121\u99c4\u306b\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30eb\u306e\u5b9f\u884c\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u3068\u3001\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30eb\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u5104\u52ab\u306b\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u308a\u3001CI\u3078\u306e\u5c0e\u5165\u8ae6\u3081\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308b<\/li>\n<li>\u5404\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30eb\u304c\u72ec\u81ea\u306e\u65b9\u5f0f\u3067\u958b\u767a\u3057\u3001\u305d\u308c\u304c\u4e71\u7acb\u3057\u3066\u3057\u307e\u3046\u3068\u8907\u6570\u306e\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30eb\u3067\u540c\u3058\u3088\u3046\u51e6\u7406\u3092\u3057\u3066\u3044\u305f\u3068\u3057\u3066\u3082\u518d\u5229\u7528\u6027\u304c\u4f4e\u304f\u3001\u3046\u307e\u304f\u4f7f\u3044\u307e\u308f\u305b\u306a\u3044\u3002\u3059\u3079\u3066\u30a4\u30c1\u304b\u3089\u4f5c\u308b\u3053\u3068\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3068\u3001\u65b0\u305f\u306b\u9759\u7684\u89e3\u6790\u30c4\u30fc\u30eb\u3092\u4f5c\u308a\u305f\u3044\u3068\u8003\u3048\u308b\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u3082\u30cf\u30fc\u30c9\u30eb\u304c\u9ad8\u304f\u306a\u3063\u3066\u3057\u307e\u3046<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u307e\u305f\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u767b\u58c7\u8005\u306e\u4e0b\u8a18\u306e\u6240\u611f\u306b\u3082\u5171\u611f\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>\u751f\u6210AI\u3067\u30b3\u30fc\u30c9\u3092\u66f8\u304b\u305b\u3066\u3044\u308b\u304c\u3001\u5b66\u7fd2\u3057\u3066\u3044\u308b\u30b3\u30fc\u30c9\u306f\u6700\u65b0\u306e\u30b3\u30fc\u30c9\u3067\u306f\u306a\u3044\u5834\u5408\u3082\u3042\u308b\u306e\u3067\u305d\u3046\u3044\u3046\u5834\u5408\u306b\u5f79\u7acb\u3061\u305d\u3046<\/li>\n<li>\u307e\u3060\u5b9f\u884c\u6642\u306bpanic\u8d77\u3053\u308b\u3068\u3044\u3046issue\u3082\u4e0a\u304c\u3063\u3066\u304a\u308a\u3001\u6b63\u3057\u3044\u5909\u66f4\u304b\u306f\u5404\u3005\u3067\u898b\u6975\u3081\u308b\u3079\u304d<\/li>\n<\/ul>\n<p>\u5168\u4f53\u3092\u901a\u3057\u3066Go Conference\u306f\u7d50\u69cb\u96e3\u3057\u3044\u306a\u3068\u3044\u3046\u5370\u8c61\u3067\u3057\u305f\u3002<\/p>\n<p>\u305d\u308c\u3068\u540c\u6642\u306b\u5fa9\u7fd2\u3057\u305f\u3044\u3053\u3068\u3084\u3001\u5b66\u3076\u304d\u3063\u304b\u3051\u3082\u305f\u304f\u3055\u3093\u3067\u304d\u3001\u5f15\u304d\u7d9a\u304d\u7cbe\u9032\u3057\u3088\u3046\u3068\u601d\u3044\u307e\u3057\u305f\u3002<\/p>\n<hr\/>\n<p>\u203b \u6b8b\u5ff5\u306a\u304c\u3089\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u8cc7\u6599\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f<\/p>\n<p>\u3053\u3093\u306b\u3061\u306f\uff01\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u539f\u3067\u3059\u3002<\/p>\n<p>\u4eca\u5e74\u306e4\u6708\u306b\u30e4\u30d7\u30ea\u3078\u5165\u793e\u3057\u3001\u30d7\u30ed\u30c0\u30af\u30c8\u958b\u767a\u76ee\u7684\u3068\u3057\u3066\u306f\u521d\u3081\u3066 Go \u3092\u4f7f\u3044\u59cb\u3081\u305f\u3070\u304b\u308a\u3067\u3059\u3002<\/p>\n<p>\u305d\u3093\u306a\u79c1\u304c Go Conference\u306b\u53c2\u52a0\u3057\u3066\u307f\u3066\u3001Go \u306b\u307e\u3064\u308f\u308b\u3053\u3068\u304b\u3089\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306e\u96f0\u56f2\u6c17\u307e\u3067\u3001\u5b9f\u306b\u69d8\u3005\u306a\u3053\u3068\u3092\u77e5\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u4eca\u56de\u306f\u3001\u6570\u3042\u308b\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u4e2d\u3067\u3082\u3001\u6700\u521d\u306b\u8074\u8b1b\u3057\u3001\u6700\u3082\u5370\u8c61\u306b\u6b8b\u3063\u305f\u767a\u8868\u306e\u4e00\u3064\u3067\u3042\u3063\u305f\u300cGo1.24\u3067\u9032\u5316\u3057\u305fmap\u578b\u306b\u3064\u3044\u3066\u7406\u89e3\u3059\u308b\u300d\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u7d39\u4ecb\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3059\u3002<\/p>\n<h2 id=\"\u6982\u8981-1\">\u6982\u8981<\/h2>\n<p>\u3053\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u306f\u3001Go 1.24 \u304b\u3089\u5909\u66f4\u3055\u308c\u305f map \u306e\u5b9f\u88c5\u3084\u3001\u5f93\u6765\u306e\u5b9f\u88c5\u3068\u306e\u9055\u3044\u306a\u3069\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"\u30dd\u30a4\u30f3\u30c8\">\u30dd\u30a4\u30f3\u30c8<\/h2>\n<p>map \u306f\u30cf\u30c3\u30b7\u30e5\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u3063\u3066\u8868\u73fe\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5f93\u6765\u306e\u5b9f\u88c5\u3067\u306f\u3001\u5185\u90e8\u306b 8 \u3064\u306e\u30b9\u30ed\u30c3\u30c8\u3092\u6301\u3064 Bucket \u306e\u914d\u5217\u306b\u60c5\u5831\u3092\u683c\u7d0d\u3057\u3066\u3044\u304d\u3001\u57cb\u307e\u3063\u305f\u5834\u5408\u306f Overflow Bucket \u3092\u30c1\u30a7\u30fc\u30f3\u3055\u305b\u308b\u3088\u3046\u306a\u65b9\u5f0f\u3067\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u4e00\u65b9\u3067\u3001Go 1.24 \u304b\u3089\u306f\u30aa\u30fc\u30d7\u30f3\u30a2\u30c9\u30ec\u30b9\u6cd5\u3092\u7528\u3044\u308b Swiss Table \u306b\u3088\u308b\u5b9f\u88c5\u306b\u7f6e\u304d\u63db\u308f\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u65b0\u3057\u3044\u5b9f\u88c5\u3067\u306f\u3001Directory \u3068\u547c\u3070\u308c\u308b Table \u3078\u306e\u30dd\u30a4\u30f3\u30bf\u306e\u914d\u5217\u306b\u3088\u3063\u3066\u8907\u6570\u306e Table \u3092\u7ba1\u7406\u3057\u3001\u5404 Table \u304c\u8907\u6570\u306e Group \u3067\u69cb\u6210\u3055\u308c\u308b\u968e\u5c64\u69cb\u9020\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Group \u306f\u5f93\u6765\u306e Bucket \u306b\u76f8\u5f53\u3059\u308b\u3082\u306e\u3067\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30ef\u30fc\u30c9\u3068\u547c\u3070\u308c\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u4f7f\u3063\u3066\u3001\u8907\u6570\u306e\u30b9\u30ed\u30c3\u30c8\u3092\u52b9\u7387\u7684\u306b\u691c\u7d22\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u5909\u66f4\u306b\u3088\u3063\u3066\u3001\u30de\u30a4\u30af\u30ed\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3067\u306f\u6700\u5927 60% \u306e\u9ad8\u901f\u5316\u304c\u5b9f\u73fe\u3055\u308c\u307e\u3057\u305f\u304c\u3001map \u306e\u30b5\u30a4\u30ba\u304c\u5c0f\u3055\u3044\u5834\u5408\u306b\u306f\u3001\u5f93\u6765\u306e\u5b9f\u88c5\u306e\u65b9\u304c\u52b9\u7387\u7684\u306a\u30b1\u30fc\u30b9\u3082\u3042\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u4e2d\u3067\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u65b0\u65e7 map \u306e\u5b9f\u88c5\u65b9\u6cd5\u3084\u305d\u308c\u3089\u306e\u9055\u3044\u306a\u3069\u306b\u95a2\u3057\u3066\u3001\u56f3\u3092\u7528\u3044\u3066\u975e\u5e38\u306b\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"\u611f\u60f3-1\">\u611f\u60f3<\/h2>\n<p>\u3053\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u901a\u3058\u3066\u3001\u6539\u3081\u3066\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u9762\u767d\u3055\u3084\u91cd\u8981\u6027\u3092\u5b9f\u611f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u5f93\u6765\u306e\u5b9f\u88c5\u306f\u30c7\u30fc\u30bf\u69cb\u9020\u3082\u30b7\u30f3\u30d7\u30eb\u3067\u7406\u89e3\u3057\u3084\u3059\u304b\u3063\u305f\u3060\u3051\u306b\u3001\u65b0\u3057\u3044\u624b\u6cd5\u304c\u3044\u304b\u306b\u3088\u304f\u5de5\u592b\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u611f\u3058\u307e\u3057\u305f\u3002<\/p>\n<p>\u307e\u305f\u3001\u6570\u5024\u3068\u3057\u3066\u306e\u6210\u679c\u3082\u304b\u306a\u308a\u5927\u304d\u304f\u3001\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u6539\u5584\u304c\u5b9f\u969b\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u306e\u91cd\u8981\u6027\u3092\u518d\u8a8d\u8b58\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30cf\u30c3\u30b7\u30e5\u30c6\u30fc\u30d6\u30eb\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u3084\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30ef\u30fc\u30c9\u306e\u5f79\u5272\u3001\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u3078\u306e\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\u306a\u3069\u304c\u56f3\u3092\u7528\u3044\u3066\u89e3\u8aac\u3055\u308c\u3066\u304a\u308a\u3001\u8996\u899a\u7684\u306b\u7406\u89e3\u3057\u3084\u3059\u304f\u3001\u975e\u5e38\u306b\u7406\u89e3\u3057\u3084\u3059\u3044\u5185\u5bb9\u3067\u3057\u305f\u3002<\/p>\n<p>\u666e\u6bb5\u304b\u3089\u3001 map \u306e\u7279\u6027\u306b\u3064\u3044\u3066\u306f\u628a\u63e1\u3057\u3066\u3044\u3066\u3001\u62e1\u5f35\u51e6\u7406\u304c\u3067\u304d\u308b\u3060\u3051\u767a\u751f\u3057\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u306a\u3069\u306f\u610f\u8b58\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u3053\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u6a5f\u306b\u5185\u90e8\u5b9f\u88c5\u306b\u3082\u76ee\u3092\u5411\u3051\u3066\u307f\u3088\u3046\u3068\u601d\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u7279\u306b\u3001Go \u306f Go \u3067\u66f8\u304b\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u5185\u90e8\u5b9f\u88c5\u3092\u8aad\u3080\u3053\u3068\u3067\u5f97\u3089\u308c\u308b\u3082\u306e\u306f\u591a\u3044\u306e\u3067\u306f\u3068\u8003\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n<hr\/>\n<p>\u3069\u3046\u3082\u3001SRE\u30b0\u30eb\u30fc\u30d7\u306e\u4f0a\u85e4\uff08@icchy_san\uff09\u3067\u3059\u3002<\/p>\n<p>\u6700\u8fd1\u306fGo\u8a00\u8a9e\u3092\u666e\u6bb5\u306e\u958b\u767a\u3067\u306f\u5229\u7528\u3057\u3066\u3044\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u3053\u308c\u307e\u3067Go\u8a00\u8a9e\u3067\u958b\u767a\u3092\u884c\u3063\u3066\u304d\u305f\u8eab\u3068\u3057\u3066\u3001\u305d\u3057\u3066\u73fe\u5728\u3082Go\u63a1\u7528\u3057\u3066\u3044\u308b\u4f01\u696d\u3067\u50cd\u3044\u3066\u3044\u308b\u8eab\u3068\u3057\u3066\u3001<a target=\"_blank\" href=\"https:\/\/gocon.jp\/2025\/\">Go Conference 2025<\/a>\u306f\u975e\u5e38\u306b\u697d\u3057\u307f\u306b\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u4eca\u56de\u306f\u6570\u3042\u308b\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u4e2d\u3067\u3082 <code>encoding\/json\/v2<\/code>\u3092\u8074\u8b1b\u3057\u305f\u611f\u60f3\u3092\u8ff0\u3079\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"\u8074\u8b1b\u3057\u305f\u80cc\u666f\">\u8074\u8b1b\u3057\u305f\u80cc\u666f<\/h2>\n<p>v2\u3068\u6539\u3081\u3066\u8868\u8a18\u3055\u308c\u308b\u3068\u3001Go\u8a00\u8a9e\u3068\u306f\u3044\u3048\u7834\u58ca\u7684\u5909\u66f4\u304c\u542b\u307e\u308c\u308b\u3088\u3046\u306a\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u304c\u5165\u3063\u3066\u3044\u308b\u3093\u3058\u3083\u306a\u3044\u304b\uff1f\u3068\u8003\u3048\u3001\u305d\u306e\u8fba\u304c\u3069\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u304b\u3092\u77e5\u308a\u305f\u304b\u3063\u305f\u3001\u3068\u3044\u3046\u306e\u304c\u4e3b\u306a\u7406\u7531\u3067\u3059\u3002<\/p>\n<h2 id=\"\u6982\u8981-2\">\u6982\u8981<\/h2>\n<p><code>encoding\/json\/v2<\/code>\u3067\u306e\u500b\u4eba\u7684\u306b\u8208\u5473\u3092\u6301\u3063\u305f\u90e8\u5206\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002\uff08\u8a73\u7d30\u306a\u90e8\u5206\u306f\u767a\u8868\u8005\u306e\u30b9\u30e9\u30a4\u30c9\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\uff09<\/p>\n<ul>\n<li>\u4e8c\u5c64\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\uff08jsontext\uff1d\u69cb\u6587\u5c64\u3001json\/v2\uff1d\u610f\u5473\u5c64\uff09\u3067\u518d\u8a2d\u8a08\u3055\u308c\u3001\u76f8\u4e92\u306b\u72ec\u7acb\u3057\u3066\u52d5\u4f5c\u3059\u308b\u305f\u3081\u3001\u9ad8\u3044\u67d4\u8edf\u6027\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308b\u3002<\/li>\n<li>JSON\u6a19\u6e96\u4ed5\u69d8\uff08<a target=\"_blank\" href=\"https:\/\/datatracker.ietf.org\/doc\/html\/rfc8259\">RFC 8259<\/a>\uff09\u306b\u53b3\u683c\u306b\u6e96\u62e0\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u91cd\u8907\u30ad\u30fc\u30fbUTF-8\u4e0d\u6b63\u30fb\u5927\u6587\u5b57\u5c0f\u6587\u5b57\u306e\u533a\u5225\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002<\/li>\n<li>\u4e92\u63db\u306f\u9ad8\u3081\u3067\u306f\u3042\u308b\u3082\u306e\u306e\u3001\u30bc\u30ed\u5024\/omitempty\u5468\u308a\u306b\u5165\u3063\u305f\u5909\u66f4\u306b\u3088\u308a\u82e5\u5e72\u4e92\u63db\u6027\u3092\u4fdd\u3066\u306a\u3044\u90e8\u5206\u3082\u51fa\u3066\u304f\u308b\u3002\n<ul>\n<li><code>GOEXPERIMENT=jsonv2<\/code>\u3092\u3064\u3051\u3066Build\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u65e2\u5b58\u306ev1\u306e\u30b3\u30fc\u30c9\u3067\u4e92\u63db\u6027\u30c1\u30a7\u30c3\u30af\u3092\u5b9f\u65bd\u3067\u304d\u308b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2 id=\"\u611f\u60f3-2\">\u611f\u60f3<\/h2>\n<p>\u624b\u7656\u306e\u3088\u3046\u306b\u4f7f\u3063\u3066\u3044\u305f <code>encoding\/json<\/code> \u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3059\u304c\u3001\u672c\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u805e\u3044\u3066\u521d\u3081\u3066\u77e5\u308b\u3088\u3046\u306a\u3053\u3068\u3084\u3001\u904e\u53bb\u306b\u56f0\u3063\u305f\u3053\u3068\u304c\u5bfe\u5fdc\u3055\u308c\u3066\u3044\u3066\u3001 <code>encoding\/json\/v2<\/code>\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067v1\u3088\u308a\u6271\u3044\u3084\u3059\u304f\u306a\u308a\u305d\u3046\u3060\u3068\u611f\u3058\u307e\u3057\u305f\u3002<\/p>\n<p>JSON\u306f\u7279\u6b8a\u306a\u64cd\u4f5c\uff08Go\u3067\u5225\u306e\u8a00\u8a9e\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u751f\u6210\u3057\u3066\u3001\u305d\u306e\u307e\u307e\u305d\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u5b9f\u884c\u3059\u308b\u3068\u304b\uff09\u3067\u5229\u7528\u3057\u3066\u3044\u305f\u3053\u3068\u304c\u3042\u308a\u3001\u5165\u529b\u6642\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3092 <code>Unmarshal<\/code> \u524d\u306b\u884c\u3063\u3066\u3044\u305f\u305f\u3081\u3001\u91cd\u8907\u3057\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u304d\u305f\u6642\u306b\u5f8c\u306e\u5024\u304c\u5229\u7528\u3055\u308c\u308b\u3001\u3068\u3044\u3063\u305f\u30d1\u30c3\u30b1\u30fc\u30b8\u7279\u6709\u306e\u4ed5\u69d8\u306f\u77e5\u3089\u306a\u304b\u3063\u305f\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u81ea\u5206\u306e\u7d4c\u9a13\u3068\u3057\u3066\u56f0\u3063\u305f\u3053\u3068\u306e\u3042\u308b\u4f8b\u3068\u3057\u3066\u3001\u767a\u8868\u8005\u306e\u65b9\u3082\u6319\u3052\u3066\u3044\u307e\u3059\u304c\u3001<code>omitempty<\/code>\u8a2d\u5b9a\u3092\u3057\u3066\u3044\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u7a7a\u306e\u5024\u306f\u7121\u8996\u3055\u308c\u308b\u4ed5\u69d8\u3067\u7a7a\u306a\u306e\u304b\u3001\u6e21\u3063\u3066\u304d\u3066\u306a\u3044\u3060\u3051\u306a\u306e\u304b\u306e\u5224\u5225\u304c\u3067\u304d\u306a\u304b\u3063\u305f\u70b9\u3067\u3059\u3002\u3053\u3061\u3089\u304c\u3001v2\u304b\u3089\u306f\u7a7a\u5024\u3067\u521d\u671f\u5316+JSON\u306b\u51fa\u529b\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u306e\u306f\u975e\u5e38\u306b\u3042\u308a\u304c\u305f\u3044\u3067\u3059\u3002\uff08\u9006\u306b\u7121\u8996\u524d\u63d0\u306e\u5b9f\u88c5\u3092\u3057\u3066\u3044\u305f\u5834\u5408\u306b\u554f\u984c\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u70b9\u306b\u306f\u6ce8\u610f\u3057\u305f\u3044\u3002\uff09<\/p>\n<p>\u5b9f\u969b\u306b\u624b\u5143\u3067\u3082\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\"><span class=\"synStatement\">package<\/span> main\n\n<span class=\"synStatement\">import<\/span> (\n    <span class=\"synConstant\">\"encoding\/json\"<\/span>\n    jsonv2 <span class=\"synConstant\">\"encoding\/json\/v2\"<\/span>\n    <span class=\"synConstant\">\"fmt\"<\/span>\n    <span class=\"synConstant\">\"os\"<\/span>\n)\n\n<span class=\"synStatement\">type<\/span> Test <span class=\"synStatement\">struct<\/span> {\n    T <span class=\"synType\">bool<\/span> <span class=\"synConstant\">`json:\",omitempty\"`<\/span> # Boolean\u304c\u7a7a\u306e\u5834\u5408\u306bfalse\u304c\u5165\u308b\n}\n\n<span class=\"synStatement\">func<\/span> main() {\n    t := Test{}\n\n    m, err := json.Marshal(t)\n    <span class=\"synStatement\">if<\/span> err != <span class=\"synStatement\">nil<\/span> {\n        fmt.Fprintln(os.Stderr, err)\n        <span class=\"synStatement\">return<\/span>\n    }\n\n    m2, err := jsonv2.Marshal(t)\n    <span class=\"synStatement\">if<\/span> err != <span class=\"synStatement\">nil<\/span> {\n        fmt.Fprintln(os.Stderr, err)\n        <span class=\"synStatement\">return<\/span>\n    }\n\n    fmt.Printf(<span class=\"synConstant\">\"v1: %s<\/span><span class=\"synSpecial\">\\n<\/span><span class=\"synConstant\">\"<\/span>, <span class=\"synType\">string<\/span>(m))\n    fmt.Printf(<span class=\"synConstant\">\"v2: %s<\/span><span class=\"synSpecial\">\\n<\/span><span class=\"synConstant\">\"<\/span>, <span class=\"synType\">string<\/span>(m2))\n\n    <span class=\"synStatement\">return<\/span>\n}\n\n\n# GOEXPERIMENT=jsonv2 <span class=\"synStatement\">go<\/span> run main.<span class=\"synStatement\">go<\/span>\n# v1: {}\n# v2: {<span class=\"synConstant\">\"T\"<\/span>:<span class=\"synStatement\">false<\/span>}\n<\/pre>\n<p>v1\u306ejson package\u306e\u5834\u5408\u306f\u3001 <code>omitempty<\/code>\u306b\u3088\u3063\u3066\u7a7a\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u304c\u3001v2\u306e\u65b9\u306f <code>{\u201cT\u201d:false}<\/code> \u304c\u8fd4\u3063\u3066\u304d\u3066\u304a\u308a\u521d\u671f\u5024\u304c\u5165\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p><code>GOEXPERIMENT=jsonv2<\/code>\u8a2d\u5b9a\u306b\u3088\u308b<code>encoding\/json<\/code>\u306e<code>omitempty<\/code>\u306e\u6319\u52d5\u306e\u9055\u3044\u306f\u767a\u751f\u3057\u307e\u305b\u3093\u3067\u3057\u305f\u304c\u3001<code>encoding\/json\/v2<\/code>\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u306f\u524d\u8ff0\u306e\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u7d50\u679c\u306e\u901a\u308a\u7d50\u679c\u304c\u7570\u306a\u308b\u306e\u3067\u3001\u4eee\u306bv2\u306e\u30b3\u30fc\u30c9\u304c\u6a19\u6e96\u5316\u3055\u308c\u305f\u5834\u5408\u306b\u5099\u3048\u3066\u3001\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u542b\u3081\u691c\u8a3c\u304c\u3067\u304d\u308b\u72b6\u614b\u306b\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308b\u3068\u601d\u3044\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"\u6700\u5f8c\u306b\">\u6700\u5f8c\u306b<\/h2>\n<p>\u3068\u3066\u3082\u6fc3\u3044\u30bb\u30c3\u30b7\u30e7\u30f3\u3068\u3044\u3046\u3053\u3068\u3082\u3042\u308a\u3001\u591a\u304f\u306e\u5b66\u3073\u306e\u3042\u308b\u5185\u5bb9\u3060\u3063\u305f\u306e\u3067\u3059\u304c\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u767b\u58c7\u8005\u306e\u30b9\u30e9\u30a4\u30c9\u3092\u62dd\u898b\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u3068\u8003\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>v2\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u306e\u8a71\u3001\u62e1\u5f35\u3055\u308c\u305f\u30bf\u30b0\u306e\u8a71\u3001\u305d\u3057\u3066\u307f\u3093\u306a\u304c\u6c17\u306b\u306a\u308b\u3067\u3042\u308d\u3046v1\u3068v2\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306e\u6bd4\u8f03\u306a\u3069\u306a\u3069\u8f09\u305b\u304d\u308c\u306a\u3044\u5185\u5bb9\u304c\u76db\u308a\u3060\u304f\u3055\u3093\u306a\u306e\u3067\u3001\u305c\u3072\u6c17\u306b\u306a\u3063\u305f\u65b9\u306f<a target=\"_blank\" href=\"https:\/\/speakerdeck.com\/nagano\/v2dehe-gabian-waruka\">\u767b\u58c7\u8005\u3055\u3093\u306eSpeakerDeck<\/a>\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u30bb\u30c3\u30b7\u30e7\u30f3\u3060\u3051\u3067\u306a\u304f\u3001<a target=\"_blank\" href=\"https:\/\/gocon.jp\/2025\/\">Go Conference 2025<\/a>\u81ea\u4f53\u697d\u3057\u304b\u3063\u305f\u306e\u3067\u307e\u305f\u6765\u5e74\u3082\u53c2\u52a0\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"\u53c2\u7167\">\u53c2\u7167<\/h2>\n<hr\/>\n<p>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u8ca1\u5b9d\u3067\u3059\u3002<\/p>\n<p>Go Conference 2025\u3067\u300c\u5168\u3066Go\u3067\u4f5c\u308bP2P\u5bfe\u6226\u30b2\u30fc\u30e0\u5165\u9580\u300d\u3068\u3044\u3046\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u805e\u304d\u307e\u3057\u305f\u3002Go\u3067\u5b9f\u88c5\u3057\u305f1\u5bfe1\u5bfe\u6226\u30b2\u30fc\u30e0\u306e\u8a71\u3067\u3001\u7279\u306bEbitengine\u3068\u3044\u3046\u30b2\u30fc\u30e0\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u6c17\u306b\u306a\u308a\u3001\u300cGo\u3067GUI\u3082&#8230;\u4f5c\u308c\u308b\u306e\uff1f\u300d\u3068\u885d\u6483\u3092\u53d7\u3051\u3001\u81ea\u5206\u3067\u3082\u8a66\u3057\u3066\u307f\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"\u6982\u8981-3\">\u6982\u8981<\/h2>\n<p>\u3053\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u306f\u3001\u4ee5\u4e0b\u306e5\u3064\u306e\u8981\u7d20\u3067P2P\u5bfe\u6226\u30b2\u30fc\u30e0\u3092\u69cb\u7bc9\u3059\u308b\u65b9\u6cd5\u304c\u89e3\u8aac\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>Ebitengine: wasm\u30d3\u30eb\u30c9\u3067\u30d6\u30e9\u30a6\u30b6\u30b2\u30fc\u30e0\u3092\u5b9f\u73fe<\/li>\n<li>WebSocket\u30b5\u30fc\u30d0: \u8efd\u91cf\u30de\u30c3\u30c1\u30f3\u30b0\u3068\u30b7\u30b0\u30ca\u30ea\u30f3\u30b0<\/li>\n<li>Ayame: \u30b7\u30b0\u30ca\u30ea\u30f3\u30b0\u30fb\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5b9f\u88c5<\/li>\n<li>Pion\/WebRTC: P2P\u901a\u4fe1\u306e\u5b9f\u73fe<\/li>\n<li>\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b5\u30fc\u30d0: \u30b9\u30b3\u30a2\u7ba1\u7406<\/li>\n<\/ul>\n<p>\u7279\u306b\u5370\u8c61\u7684\u3060\u3063\u305f\u306e\u306f\u3001Ebitengine\u3067macOS\u3084Windows\u3001Linux\u306f\u3082\u3061\u308d\u3093\u3001Nintendo Switch\u2122\u3067\u3082\u52d5\u304f\u3068\u3044\u3046\u70b9\u3067\u3057\u305f\u3002<\/p>\n<h2 id=\"\u304a\u8a66\u3057\">\u304a\u8a66\u3057<\/h2>\n<p>Ebitengine\u3092\u4f7f\u3063\u3066\u3069\u3046\u3084\u3063\u3066\u30b2\u30fc\u30e0\u753b\u9762\u304c\u63cf\u753b\u3055\u308c\u308b\u306e\u304b\u6c17\u306b\u306a\u3063\u3066\u3001\u7c21\u5358\u306a\u30b2\u30fc\u30e0\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u305f\u3002<br \/>\n\u5b9f\u969b\u306b\u4f5c\u6210\u3057\u305f\u3082\u306e\u306f\u3053\u3061\u3089\u3067\u3059\u3002<\/p>\n<p><span itemscope=\"\" itemtype=\"http:\/\/schema.org\/Photograph\"><img decoding=\"async\" src=\"https:\/\/cdn-ak.f.st-hatena.com\/images\/fotolife\/z\/zain78\/20251022\/20251022171528.png\" width=\"801\" height=\"626\" loading=\"lazy\" title=\"\" class=\"hatena-fotolife\" style=\"width:300px\" itemprop=\"image\"\/><\/span><\/p>\n<p><span itemscope=\"\" itemtype=\"http:\/\/schema.org\/Photograph\"><img decoding=\"async\" src=\"https:\/\/cdn-ak.f.st-hatena.com\/images\/fotolife\/z\/zain78\/20251022\/20251022171544.png\" width=\"796\" height=\"625\" loading=\"lazy\" title=\"\" class=\"hatena-fotolife\" style=\"width:300px\" itemprop=\"image\"\/><\/span><\/p>\n<p>\u30af\u30ea\u30c3\u30af\u3057\u305f\u3089\u98a8\u8eca\u304c\u56de\u8ee2\u3059\u308b\u3068\u3044\u3046\u7c21\u5358\u306a\u30b2\u30fc\u30e0\u3092\u4f5c\u308a\u307e\u3057\u305f\u304c\u3001\u5168\u4f53\u3067\u306f300\u884c\u3082\u306a\u304f\u3001\u30b3\u30fc\u30c9\u3082\u3059\u3063\u304d\u308a\u3057\u305f\u3082\u306e\u306b\u306a\u308a\u307e\u3057\u305f\u3002<br \/>\n\u30b2\u30fc\u30e0\u753b\u9762\u306f\u4ee5\u4e0b\u306e\u8a18\u8ff0\u3060\u3051\u3067\u3059\u3002<\/p>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\"><span class=\"synStatement\">func<\/span> (g *Game) drawGame(screen *ebiten.Image) {\n     \n     screen.Fill(color.RGBA{<span class=\"synConstant\">30<\/span>, <span class=\"synConstant\">30<\/span>, <span class=\"synConstant\">40<\/span>, <span class=\"synConstant\">255<\/span>})\n\n     \n     op := &amp;ebiten.DrawImageOptions{}\n\n     \n     imgWidth, imgHeight := g.spriteImage.Size()\n     op.GeoM.Translate(-<span class=\"synType\">float64<\/span>(imgWidth)\/<span class=\"synConstant\">2<\/span>, -<span class=\"synType\">float64<\/span>(imgHeight)\/<span class=\"synConstant\">2<\/span>)\n\n     \n     op.GeoM.Rotate(g.rotation)\n\n     \n     op.GeoM.Translate(<span class=\"synType\">float64<\/span>(screenWidth)\/<span class=\"synConstant\">2<\/span>, <span class=\"synType\">float64<\/span>(screenHeight)\/<span class=\"synConstant\">2<\/span>)\n\n     screen.DrawImage(g.spriteImage, op)\n\n     \n     clickText := fmt.Sprintf(<span class=\"synConstant\">\"\u30af\u30ea\u30c3\u30af\u6570: %d\"<\/span>, g.clickCount)\n     text.Draw(screen, clickText, g.font, <span class=\"synConstant\">10<\/span>, <span class=\"synConstant\">30<\/span>, color.White)\n\n     \n     degrees := <span class=\"synType\">int<\/span>(g.rotation*<span class=\"synConstant\">180<\/span>\/math.Pi) % <span class=\"synConstant\">360<\/span>\n     rotationText := fmt.Sprintf(<span class=\"synConstant\">\"\u56de\u8ee2\u89d2\u5ea6: %d\u00b0\"<\/span>, degrees)\n     text.Draw(screen, rotationText, g.font, <span class=\"synConstant\">10<\/span>, <span class=\"synConstant\">60<\/span>, color.White)\n\n     \n     backText := <span class=\"synConstant\">\"ESC: \u30e1\u30cb\u30e5\u30fc\u306b\u623b\u308b\"<\/span>\n     text.Draw(screen, backText, g.font, <span class=\"synConstant\">10<\/span>, screenHeight-<span class=\"synConstant\">30<\/span>, color.RGBA{<span class=\"synConstant\">150<\/span>, <span class=\"synConstant\">150<\/span>,\n <span class=\"synConstant\">150<\/span>, <span class=\"synConstant\">255<\/span>})\n }\n<\/pre>\n<p>\u7c21\u5358\u306a\u5185\u5bb9\u306e\u30b2\u30fc\u30e0\u3068\u306f\u3044\u3048\u3001\u52d5\u304f\u3082\u306e\u3092Go\u3067\u4f5c\u308c\u308b\u306e\u306b\u3073\u3063\u304f\u308a\u3057\u307e\u3057\u305f\u3002Ebitengine\u306e\u63cf\u753b\u306f\u3001\u753b\u50cf\u304b\u3089\u753b\u50cf\u3078\u306e\u63cf\u753b\u3068\u3057\u3066\u8868\u73fe\u3057\u3066\u3044\u308b\u3089\u3057\u304f\u304b\u306a\u308a\u30b7\u30f3\u30d7\u30eb\u306a\u3082\u306e\u3089\u3057\u3044\u3067\u3059\u3002<br \/>\n\u3069\u3053\u307e\u3067\u3067\u304d\u308b\u306e\u304b\u6c17\u306b\u306a\u3063\u305f\u306e\u3067\u6642\u9593\u3042\u308b\u6642\u306b\u3057\u3063\u304b\u308a\u89e6\u3063\u3066\u307f\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"\u307e\u3068\u3081\">\u307e\u3068\u3081<\/h2>\n<p>Go Conference 2025\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u304d\u3063\u304b\u3051\u306b\u3001Ebitengine\u3092\u4f7f\u3063\u305f\u7c21\u5358\u306a\u30b2\u30fc\u30e0\u958b\u767a\u306b\u6311\u6226\u3057\u3066\u307f\u307e\u3057\u305f\u3002Go\u3067\u3053\u308c\u307b\u3069\u624b\u8efd\u306b\u30b2\u30fc\u30e0\u304c\u4f5c\u308c\u308b\u3053\u3068\u306b\u9a5a\u304d\u3001\u540c\u6642\u306bGo\u306e\u53ef\u80fd\u6027\u3092\u518d\u8a8d\u8b58\u3057\u307e\u3057\u305f\u3002<br \/>\n\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u306f\u3001Ebitengine\u4ee5\u5916\u306b\u3082WebSocket\u3092\u7528\u3044\u305f\u30de\u30c3\u30c1\u30f3\u30b0\u5b9f\u88c5\u3084\u3001P2P\u63a5\u7d9a\u306a\u3069\u6280\u8853\u7684\u306b\u9762\u767d\u3044\u5185\u5bb9\u3092\u8a71\u3055\u308c\u3066\u3044\u305f\u306e\u3067\u3001\u305c\u3072\u6c17\u306b\u306a\u3063\u305f\u65b9\u306f\u3053\u3061\u3089\u306e<a target=\"_blank\" href=\"https:\/\/t.co\/Dw9EUc0GdP\">SpeakerDeck\u306e\u30da\u30fc\u30b8<\/a>\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n<hr\/>\n<p>\u4eca\u56de\u3001\u30e4\u30d7\u30ea\u304b\u3089\u306f\u30d7\u30ed\u30dd\u30fc\u30b6\u30eb\u306b\u306f\u5fdc\u52df\u3057\u305f\u3082\u306e\u306e\u3001\u5916\u308c\u3066\u3057\u307e\u3063\u305f\u306e\u3067\u767b\u58c7\u8005\u306f\u3044\u307e\u305b\u3093\u3067\u3057\u305f\u3002<br \/>\n\u3067\u3059\u304c\u3001Go\u3092\u4f7f\u3063\u3066\u3044\u308b\u4e00\u4f01\u696d\u3068\u3057\u3066\u3053\u308c\u304b\u3089\u3082\u767a\u4fe1\u3057\u3066\u3044\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3057\u3001\u6765\u5e74\u306eGo Conference\u306b\u306f\u30ea\u30d9\u30f3\u30b8\u3067\u304d\u308c\u3070\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u300c\u3082\u3063\u3068\u30e4\u30d7\u30ea\u306b\u3064\u3044\u3066\u8a71\u805e\u304d\u305f\u3044\uff01\u300d\u3068\u3044\u3046\u4eba\u3001\u300c\u30e4\u30d7\u30ea\u306eGo\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u8a71\u3057\u305f\u3044\uff01\u300d\u3068\u3044\u3046\u4eba\u306f\u3001\u305c\u3072\u30aa\u30d5\u30a3\u30b9\u306b\u904a\u3073\u306b\u6765\u305f\u308a\u3001\u30ab\u30b8\u30e5\u30a2\u30eb\u9762\u8ac7\u306b\u304a\u8d8a\u3057\u304f\u3060\u3055\u3044\uff01<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/open.talentio.com\/r\/1\/c\/yappli\/embed\/pages\/59642\" width=\"100%\" height=\"300\" frameborder=\"0\" title=\"%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BE%E3%83%A4%E3%83%97%E3%83%AA+%7C+%E3%82%AB%E3%82%B8%E3%83%A5%E3%82%A2%E3%83%AB%E9%9D%A2%E8%AB%87\"><\/iframe><cite class=\"hatena-citation\"><a target=\"_blank\" href=\"https:\/\/open.talentio.com\/r\/1\/c\/yappli\/pages\/59642\">open.talentio.com<\/a><\/cite><\/p>\n<\/div>\n<p><script>(function(d, s, id) {\n  var js, fjs = d.getElementsByTagName(s)[0];\n  if (d.getElementById(id)) return;\n  js = d.createElement(s); js.id = id;\n  js.src=\"https:\/\/connect.facebook.net\/ja_JP\/sdk.js#xfbml=1&version=v3.2\";\n  fjs.parentNode.insertBefore(js, fjs);\n}(document, 'script', 'facebook-jssdk'));<\/script><script>(function(d, s, id) {\n  var js, fjs = d.getElementsByTagName(s)[0];\n  if (d.getElementById(id)) return;\n  js = d.createElement(s); js.id = id;\n  js.src = \"\/\/connect.facebook.net\/ja_JP\/sdk.js#xfbml=1&appId=719729204785177&version=v17.0\";\n  fjs.parentNode.insertBefore(js, fjs);\n}(document, 'script', 'facebook-jssdk'));<\/script><br \/>\n<br \/>\n<br \/><a href=\"https:\/\/tech.yappli.io\/entry\/go_conference_2025\">\u5143\u306e\u8a18\u4e8b\u3092\u78ba\u8a8d\u3059\u308b <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"\u3053\u3093\u306b\u3061\u306f\u3002CX\u958b\u767a\u90e8\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30b0\u30eb\u30fc\u30d7\u3067\u3001\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3092\u3057\u3066\u3044\u308b\u52a0\u7d0d\u3067\u3059\u3002 \u5c11\u3057\u3001\u671f\u9593\u304c\u7a7a\u3044\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u304c\u3001\u5148\u65e5\u3001Go Conference 2025\u304c\u958b\u50ac\u3055\u308c\u3001\u5f0a\u793e\u3082\u30b9\u30dd\u30f3\u30b5\u30fc\u3068\u3057\u3066\u30a4\u30d9\u30f3\u30c8\u306e\u76db\u308a\u4e0a\u3052\u306e\u4e00\u7aef\u3092\u62c5 [&hellip;]","protected":false},"author":1,"featured_media":18565,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-18564","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-company-tec"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Go Conference 2025\u306e\u30cf\u30a4\u30e9\u30a4\u30c8 - Yappli Tech Blog - \u30dd\u30b1\u30b3\u30f3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tech.yappli.io\/entry\/go_conference_2025\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Go Conference 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