{"title":"\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ad\u30fc\u306e\u578b\u306f PropertyKey \u578b","height":"190","author_name":"panda_noir","width":"100%","url":"https://www.pandanoir.info/entry/2021/02/28/131203","published":"2021-02-28 13:12:03","blog_title":"Panda Noir","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/panda_noir/","image_url":null,"version":"1.0","type":"rich","provider_url":"https://hatena.blog","description":"Mapped types\u3092\u6271\u3046\u6642\u3001\u3088\u304fstring | number | symbol\u304c\u51fa\u3066\u304d\u307e\u3059\u3088\u306d\uff1f\u5b9f\u306f\u3053\u308c\u3068\u540c\u3058\u578b\u304c PropertyKey\u3068\u3044\u3046\u30d3\u30eb\u30c8\u30a4\u30f3\u578b\u3067\u3042\u308a\u307e\u3059\u3002 type keys = PropertyKey; // string | number | symbol \u5b9f\u306f\u3001\u3053\u308c\u3068\u540c\u3058\u3082\u306e\u306f keyof any \u304b\u3089\u5c0e\u51fa\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3001\u5fae\u5999\u306b\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002 keyofStringsOnly \u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u6709\u7121\u306b\u3088\u3063\u3066 keyof any \u306e\u6319\u52d5\u304c\u7570\u306a\u308a\u307e\u3059\u3002 // \"keyofStringsOnly\": true type keys1 = keyof any; // string\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.pandanoir.info%2Fentry%2F2021%2F02%2F28%2F131203\" title=\"\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ad\u30fc\u306e\u578b\u306f PropertyKey \u578b - Panda Noir\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":[],"blog_url":"https://www.pandanoir.info/"}