{"published":"2026-06-17 23:10:23","categories":["TypeScript"],"url":"https://tech.fun-toy-life.com/entry/2026/06/17/231023","provider_url":"https://hatena.blog","height":"190","provider_name":"Hatena Blog","author_name":"plarail_hangout","type":"rich","version":"1.0","blog_url":"https://tech.fun-toy-life.com/","width":"100%","author_url":"https://blog.hatena.ne.jp/plarail_hangout/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftech.fun-toy-life.com%2Fentry%2F2026%2F06%2F17%2F231023\" title=\"TypeScript \u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u5165\u9580\uff1a`&lt;T&gt;` \u306e\u57fa\u672c\u3068\u578b\u5236\u7d04\u306e\u66f8\u304d\u65b9 - Engineering Tech Dojo\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"Engineering Tech Dojo","image_url":null,"description":"TypeScript \u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u5165\u9580\uff1a<T> \u306e\u57fa\u672c\u3068\u578b\u5236\u7d04\u306e\u66f8\u304d\u65b9 \u30b8\u30a7\u30cd\u30ea\u30af\u30b9\uff08Generics\uff09\u306f\u3001\u578b\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308c\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u540c\u3058\u51e6\u7406\u3092\u7570\u306a\u308b\u578b\u306b\u5bfe\u3057\u3066\u578b\u5b89\u5168\u306b\u4f7f\u3044\u56de\u305b\u307e\u3059\u3002 \u306a\u305c\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u304c\u5fc5\u8981\u304b any \u3092\u4f7f\u3046\u3068\u578b\u306e\u6069\u6075\u304c\u306a\u304f\u306a\u308a\u307e\u3059\u3002 // any \u3092\u4f7f\u3046\u5834\u5408\uff1a\u578b\u30c1\u30a7\u30c3\u30af\u304c\u52b9\u304b\u306a\u3044 function identity(arg: any): any { return arg } const result = identity(42) result.toUpperCase() // \u5b9f\u884c\u6642\u30a8\u30e9\u30fc\u3060\u304c TypeScript \u306f\u6c17\u3065\u3051\u306a\u3044 \u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u3092\u4f7f\u3046\u3068\u3001\u578b\u3092\u4fdd\u3063\u305f\u307e\u307e\u2026","title":"TypeScript \u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u5165\u9580\uff1a`<T>` \u306e\u57fa\u672c\u3068\u578b\u5236\u7d04\u306e\u66f8\u304d\u65b9"}