{"id":3894,"date":"2023-08-01T16:14:14","date_gmt":"2023-08-01T07:14:14","guid":{"rendered":"https:\/\/dennie.tokyo\/it\/?p=3894"},"modified":"2023-08-01T16:14:14","modified_gmt":"2023-08-01T07:14:14","slug":"%e3%80%90go%e3%80%91%e3%82%a4%e3%83%b3%e3%82%bf%e3%83%bc%e3%83%95%e3%82%a7%e3%83%bc%e3%82%b9%e3%81%ae%e3%82%bc%e3%83%ad%e5%80%a4","status":"publish","type":"post","link":"https:\/\/dennie.tokyo\/it\/?p=3894","title":{"rendered":"\u3010Go\u3011\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30bc\u30ed\u5024"},"content":{"rendered":"\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30bc\u30ed\u5024\u306fnil\u3067\u3059\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u304cnil\u306b\u306a\u308b\u6761\u4ef6\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304cnil\u306b\u306a\u308b\u6761\u4ef6<\/h1>\n\n\n\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304cnil\u306b\u306a\u308b\u6761\u4ef6\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u578b\u304cnil\u3067\u3042\u308b\u4e8b\u3067\u3059\u3002<br>\u4ee5\u4e0b\u306fnil\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\/\/ \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9a\u7fa9\ntype myInterface interface {\n\tgetName() string\n}\n\nfunc main() {\n\n\t\/\/ \u7a7a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\n\tvar i interface{}\n\tfmt.Println(i == nil) \/\/ true \u304c\u8868\u793a\u3055\u308c\u308b\n\n\t\/\/ \u30e6\u30fc\u30b6\u5b9a\u7fa9\u578b\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\n\tvar dog myInterface\n\tfmt.Println(dog == nil) \/\/ true \u304c\u8868\u793a\u3055\u308c\u308b\n}\n<\/code><\/pre><\/div>\n\n\n\n<p>\u6b63\u78ba\u306b\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u5b9f\u88c5\u3055\u308c\u308b\u578b(\u5177\u8c61\u578b)\u3068\u5024\u3067\u69cb\u6210\u3055\u308c\u3001\u305d\u306e\u4e21\u65b9\u304cnil\u3067\u3042\u308b\u5834\u5408\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306fnil\u306b\u306a\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5177\u8c61\u578b\u304c\u5b58\u5728\u3057\u3001\u5024\u304cnil\u3067\u306f\u306a\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306fnil\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li><li>\u5177\u8c61\u578b\u304c\u5b58\u5728\u3057\u3001\u5024\u304cnil\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306fnil\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li><li>\u5177\u8c61\u578b\u304c\u5b58\u5728\u305c\u305a\u3001\u5024\u304cnil\u3067\u306f\u306a\u3044\u3053\u3068\u306f\u3042\u308a\u5f97\u307e\u305b\u3093\u3002\u5024\u304c\u5b58\u5728\u3059\u308b\u3053\u3068\u306f\u5fc5\u305a\u578b\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u72b6\u614b\u306b\u306a\u308a\u307e\u3059\u3002<\/li><li>\u5177\u8c61\u578b\u304c\u5b58\u5728\u305c\u305a\u3001\u5024\u304cnil\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306fnil\u306b\u306a\u308a\u307e\u3059\u3002<\/li><\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3068\u30e1\u30bd\u30c3\u30c8<\/h1>\n\n\n\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304cnil\u3067\u306f\u306a\u3044\u5834\u5408\u3001\u30e1\u30bd\u30c3\u30c8\u304c\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<br>\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306e\u5177\u8c61\u578b\u304c\u5b58\u5728\u3059\u308c\u3070\u3001\u5024\u304cnil\u3067\u3042\u3063\u3066\u3082\u30e1\u30bd\u30c3\u30c8\u306f\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<br>\u8a00\u3044\u63db\u3048\u308b\u3068\u3001\u30e1\u30bd\u30c3\u30c8\u304c\u5b9f\u884c\u3067\u304d\u306a\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306fnil\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30bc\u30ed\u5024\u306fnil\u3067\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":5,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-3894","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\/3894","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=3894"}],"version-history":[{"count":1,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/3894\/revisions"}],"predecessor-version":[{"id":3895,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/3894\/revisions\/3895"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/media\/5"}],"wp:attachment":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}