{"type":"rich","author_url":"https://blog.hatena.ne.jp/nainaistar/","published":"2022-08-01 12:00:00","description":"Java\u3060\u3068Map\u306evalue\u3092\u53d6\u5f97\u3059\u308b\u969b\u306b\u3001\u53d6\u5f97\u3067\u304d\u306a\u304b\u3063\u305f\u5834\u5408\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8fd4\u3059getOrElse\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001JavaScript\u306b\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306f\u3001\u305d\u306e\u540c\u7b49\u306e\u6319\u52d5\u3092\u7c21\u6f54\u306b\u66f8\u3051\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002 \u74b0\u5883 TypeScript 4.7.4 CodeSandbox\u3067\u691c\u8a3c \u5bfe\u5fdc Null\u5408\u4f53\u6f14\u7b97\u5b50\uff08??\uff09\u3092\u7d44\u307f\u5408\u308f\u305b\u308c\u3070\u3001getOrElse\u3068\u540c\u7b49\u306e\u6319\u52d5\u3055\u305b\u3089\u308c\u307e\u3059\u3002 // Map\u306e\u5b9a\u7fa9 const actionMap: Map<String, number> = new Map<String, number>([ [\"a\", 1], [\"b\", 2], [\"c\", 3\u2026","version":"1.0","title":"JavaScript\uff08TypeScript\uff09\u306eMap\u3067gerOrElse\u3068\u540c\u7b49\u306e\u52d5\u304d\u3092\u7c21\u6f54\u306b\u66f8\u304f","categories":["Javascript","TypeScript","\u6280\u8853"],"provider_name":"Hatena Blog","author_name":"nainaistar","blog_title":"\u304d\u308a\u4e38\u306e\u6280\u8853\u65e5\u8a18","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/n/nainaistar/20220717/20220717184739.png","height":"190","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnainaistar.hatenablog.com%2Fentry%2F2022%2F08%2F01%2F120000\" title=\"JavaScript\uff08TypeScript\uff09\u306eMap\u3067gerOrElse\u3068\u540c\u7b49\u306e\u52d5\u304d\u3092\u7c21\u6f54\u306b\u66f8\u304f - \u304d\u308a\u4e38\u306e\u6280\u8853\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://nainaistar.hatenablog.com/entry/2022/08/01/120000","provider_url":"https://hatena.blog","blog_url":"https://nainaistar.hatenablog.com/"}