{"id":3949,"date":"2023-08-23T16:19:20","date_gmt":"2023-08-23T07:19:20","guid":{"rendered":"https:\/\/dennie.tokyo\/it\/?p=3949"},"modified":"2025-07-10T19:23:53","modified_gmt":"2025-07-10T10:23:53","slug":"%e3%80%90go%e3%80%91%e3%83%9d%e3%82%a4%e3%83%b3%e3%82%bf%e3%83%ac%e3%82%b7%e3%83%bc%e3%83%90%e3%81%a8nil","status":"publish","type":"post","link":"https:\/\/dennie.tokyo\/it\/?p=3949","title":{"rendered":"\u3010Go\u3011nil\u30dd\u30a4\u30f3\u30bf\u306e\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057"},"content":{"rendered":"\n<p>Go\u306fnil\u30dd\u30a4\u30f3\u30bf\u304b\u3089\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u4e8b\u304c\u51fa\u6765\u307e\u3059\u3002\u547c\u3073\u51fa\u3057\u305f\u969b\u306e\u6319\u52d5\u306b\u3064\u3044\u3066\u78ba\u8a8d\u3057\u3066\u884c\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<h1 class=\"wp-block-heading\">\u30dd\u30a4\u30f3\u30bf\u30ec\u30b7\u30fc\u30d0\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057<\/h1>\n\n\n\n<p>nil\u30dd\u30a4\u30f3\u30bf\u304b\u3089\u30dd\u30a4\u30f3\u30bf\u30ec\u30b7\u30fc\u30d0\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u4e8b\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>package main\n\nimport (\n\t&quot;fmt&quot;\n)\n\n\/\/ \u69cb\u9020\u4f53\u5b9a\u7fa9\ntype myStruct struct {\n\tname string\n}\n\n\/\/ \u30e1\u30bd\u30c3\u30c8\u5b9a\u7fa9\nfunc (m *myStruct) greet() {\n\tfmt.Println(&quot;\u30cf\u30ed\u30fc&quot;)\n}\n\nfunc main() {\n\tvar m *myStruct \/\/ \u30dd\u30a4\u30f3\u30bf\u578b\u306e\u30bc\u30ed\u5024\u306enil\u306b\u306a\u308b\u3002\n\tm.greet() \/\/ \u30cf\u30ed\u30fc \u304c\u8868\u793a\u3055\u308c\u308b\u3002\n}\n<\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">nil\u30dd\u30a4\u30f3\u30bf\u306e\u6ce8\u610f\u70b9<\/h2>\n\n\n\n<p>nil\u30dd\u30a4\u30f3\u30bf\u306e\u5834\u5408\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u53c2\u7167\u3059\u308b\u4e8b\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>package main\n\nimport (\n\t&quot;fmt&quot;\n)\n\n\/\/ \u69cb\u9020\u4f53\u5b9a\u7fa9\ntype myStruct struct {\n\tname string\n}\n\n\/\/ \u30e1\u30bd\u30c3\u30c8\u5b9a\u7fa9\nfunc (m *myStruct) greet() {\n\tfmt.Println(m.name) \/\/ \u5b9f\u884c\u3059\u308b\u3068\u30d1\u30cb\u30c3\u30af\u306b\u306a\u308a\u307e\u3059\u3002\n}\n\nfunc main() {\n\tvar m *myStruct \/\/ \u30dd\u30a4\u30f3\u30bf\u578b\u306e\u30bc\u30ed\u5024\u306enil\u306b\u306a\u308b\u3002\n\tm.greet()\n}\n<\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">nil\u5224\u5b9a<\/h2>\n\n\n\n<p>\u30dd\u30a4\u30f3\u30bf\u578b\u304c\u30dd\u30a4\u30f3\u30bf\u30ec\u30b7\u30fc\u30d0\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u305f\u5834\u5408\u3001\u30e1\u30bd\u30c3\u30c9\u5185\u3067\u30ec\u30b7\u30fc\u30d0\u306e\u5024\u304cnil\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u51fa\u6765\u307e\u3059\u3002\u30dd\u30a4\u30f3\u30bf\u578b\u306e\u30bc\u30ed\u5024\u306fnil\u306a\u306e\u3067\u3001\u30ec\u30b7\u30fc\u30d0\u3092nil\u5224\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>package main\n\nimport (\n\t&quot;fmt&quot;\n)\n\n\/\/ \u69cb\u9020\u4f53\u5b9a\u7fa9\ntype myStruct struct {\n\tname string\n}\n\n\/\/ \u30e1\u30bd\u30c3\u30c8\u5b9a\u7fa9\nfunc (m *myStruct) setName(name string) {\n\tm.name = name\n}\n\nfunc (m *myStruct) getName() string {\n\n\tif m == nil {\n\t\treturn &quot;\u540d\u524d\u3092\u8a2d\u5b9a\u3057\u3066\u4e0b\u3055\u3044&quot;\n\t}\n\n\treturn m.name\n}\n\nfunc main() {\n\tvar m *myStruct          \/\/ \u30dd\u30a4\u30f3\u30bf\u578b\u306e\u30bc\u30ed\u5024\u306enil\u306b\u306a\u308b\u3002\n\tfmt.Println(m.getName()) \/\/ \u540d\u524d\u3092\u8a2d\u5b9a\u3057\u3066\u4e0b\u3055\u3044 \u304c\u8868\u793a\u3055\u308c\u308b\u3002\n}<\/code><\/pre><\/div>\n\n\n\n<p>\u306a\u304a\u3001\u5ba3\u8a00\u3059\u308b\u69cb\u9020\u4f53\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u30dd\u30a4\u30f3\u30bf\u578b\u306b\u6307\u5b9a\u3057\u306a\u3044\u5834\u5408\u3001nil\u5224\u5b9a\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>package main\n\nimport (\n\t&quot;fmt&quot;\n)\n\n\/\/ \u69cb\u9020\u4f53\u5b9a\u7fa9\ntype myStruct struct {\n\tname string\n}\n\n\/\/ \u30e1\u30bd\u30c3\u30c8\u5b9a\u7fa9\nfunc (m *myStruct) setName(name string) {\n\tm.name = name\n}\n\nfunc (m *myStruct) getName() string {\n\n\tif m == nil {\n\t\treturn &quot;\u540d\u524d\u3092\u8a2d\u5b9a\u3057\u3066\u4e0b\u3055\u3044&quot;\n\t}\n\n\treturn m.name\n}\n\nfunc main() {\n\tvar m myStruct           \/\/ \u69cb\u9020\u4f53\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u3057\u3066\u5ba3\u8a00\u3002\n\tfmt.Println(m.getName()) \/\/ \u4f55\u3082\u8868\u793a\u3055\u308c\u306a\u3044\u3002\n}<\/code><\/pre><\/div>\n\n\n\n<h1 class=\"wp-block-heading\">\u5024\u30ec\u30b7\u30fc\u30d0\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057<\/h1>\n\n\n\n<p>nil\u30dd\u30a4\u30f3\u30bf\u304b\u3089\u5024\u30ec\u30b7\u30fc\u30d0\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3068\u30d1\u30cb\u30c3\u30af\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>package main\n\nimport (\n\t&quot;fmt&quot;\n)\n\n\/\/ \u69cb\u9020\u4f53\u5b9a\u7fa9\ntype myStruct struct {\n\tname string\n}\n\n\/\/ \u30e1\u30bd\u30c3\u30c8\u5b9a\u7fa9\nfunc (m myStruct) greet() {\n\tfmt.Println(&quot;\u30cf\u30ed\u30fc&quot;)\n}\n\nfunc main() {\n\tvar m *myStruct\n\tm.greet() \/\/ \u30d1\u30cb\u30c3\u30af\u304c\u767a\u751f\u3059\u308b\u3002\n}\n<\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Go\u306fnil\u30dd\u30a4\u30f3\u30bf\u304b\u3089\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u4e8b\u304c\u51fa\u6765\u307e\u3059\u3002\u547c\u3073\u51fa\u3057\u305f\u969b\u306e\u6319\u52d5\u306b\u3064\u3044\u3066\u78ba\u8a8d\u3057\u3066\u884c\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":968,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-3949","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-go"],"_links":{"self":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/3949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3949"}],"version-history":[{"count":15,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/3949\/revisions"}],"predecessor-version":[{"id":3982,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/3949\/revisions\/3982"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/media\/968"}],"wp:attachment":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}