{"height":"190","author_url":"https://blog.hatena.ne.jp/susisu/","type":"rich","provider_name":"Hatena Blog","author_name":"susisu","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsusisu.hatenablog.com%2Fentry%2F2020%2F01%2F30%2F015224\" title=\"TypeScript \u3067\u30cd\u30b9\u30c8\u3055\u308c\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u578b\u306e\u66f8\u304d\u63db\u3048 - Object.create(null)\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","published":"2020-01-30 01:52:24","categories":["TypeScript","\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0","\u5c0f\u30cd\u30bf"],"provider_url":"https://hatena.blog","version":"1.0","url":"https://susisu.hatenablog.com/entry/2020/01/30/015224","image_url":null,"blog_url":"https://susisu.hatenablog.com/","blog_title":"Object.create(null)","description":"\u2193 \u306b\u5bfe\u3059\u308b\u30a2\u30f3\u30b5\u30fc\u30bd\u30f3\u30b0\u3067\u3059. blog.3qe.us \u4f8b\u3048\u3070\u3053\u3046\u3044\u3046\u611f\u3058\u306e\u578b T \u304c\u3042\u3063\u3066, \u30cd\u30b9\u30c8\u3055\u308c\u305f\u5185\u5074\u306b\u3042\u308b baz \u306e\u578b\u3092 number \u304b\u3089 string \u306b\u66f8\u304d\u63db\u3048\u305f\u3044\u3068\u3057\u307e\u3059\u306d. type T = { foo: { bar: { baz: number, }, }, }; \u3082\u3057\u3053\u308c\u304c, \u66f8\u304d\u63db\u3048\u308b\u5bfe\u8c61\u306e\u30d1\u30b9\u3092 [\"foo\", \"bar\", \"baz\"] \u306e\u3088\u3046\u306a\u30bf\u30d7\u30eb\u578b\u3067\u8868\u73fe\u3057\u3066, Rewrite<T, [\"foo\", \"bar\", \"baz\"], string> \u306e\u3088\u3046\u306b\u66f8\u3051\u305f\u3089\u7d20\u6575\u3060\u3068\u601d\u3044\u307e\u305b\u3093\u304b? \u79c1\u306f\u601d\u3044\u307e\u3059. \u3068\u3044\u3046\u308f\u3051\u3067\u3084\u3063\u3066\u3044\u304d\u307e\u3057\u3087\u3046. \u307e\u305a\u306f\u30bf\u30d7\u30eb\u578b\u306b\u5bfe\u3059\u2026","title":"TypeScript \u3067\u30cd\u30b9\u30c8\u3055\u308c\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u578b\u306e\u66f8\u304d\u63db\u3048"}