{"author_url":"https://blog.hatena.ne.jp/bluebirdofoz/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbluebirdofoz.hatenablog.com%2Fentry%2F2024%2F05%2F13%2F233650\" title=\"foreach\u3067\u8981\u7d20\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3059\u308b - MR\u304c\u697d\u3057\u3044\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://bluebirdofoz.hatenablog.com/","published":"2024-05-13 23:36:50","blog_title":"MR\u304c\u697d\u3057\u3044","provider_url":"https://hatena.blog","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/b/bluebirdofoz/20240513/20240513233639.jpg","url":"https://bluebirdofoz.hatenablog.com/entry/2024/05/13/233650","description":"\u672c\u65e5\u306fC#\u306e\u5c0f\u30cd\u30bf\u67a0\u3067\u3059\u3002 foreach\u3067\u8981\u7d20\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002 foreach\u3067\u8981\u7d20\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3059\u308b Enumerable.Select \u30e1\u30bd\u30c3\u30c9\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067foreach\u3067\u8981\u7d20\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u540c\u6642\u306b\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 foreach (var (value, index) in list.Select((value, index) => (value, index))) { // \u51e6\u7406 } Select\u306f\u30b7\u30fc\u30b1\u30f3\u30b9\u306e\u5404\u8981\u7d20\u3092\u6307\u5b9a\u3057\u305f\u30d5\u30a9\u30fc\u30e0\u306b\u5909\u66f4\u3057\u307e\u3059\u3002 \u307e\u305f\u5404\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3057\u3066\u30d5\u30a9\u30fc\u30e0\u306b\u7d44\u307f\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 learn.microsoft\u2026","height":"190","provider_name":"Hatena Blog","title":"foreach\u3067\u8981\u7d20\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u53d6\u5f97\u3059\u308b","author_name":"bluebirdofoz","type":"rich","version":"1.0","categories":[],"width":"100%"}