{"author_url":"https://blog.hatena.ne.jp/plarail_hangout/","description":"Ruby \u306e\u7e70\u308a\u8fd4\u3057\u51e6\u7406\uff1aeach\u30fbtimes\u30fbmap \u306e\u4f7f\u3044\u5206\u3051 Ruby \u306e\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u306f each\u30fbtimes\u30fbmap \u306a\u3069\u306e\u30e1\u30bd\u30c3\u30c9\u3067\u66f8\u304d\u307e\u3059\u3002for \u6587\u3088\u308a\u7c21\u6f54\u3067 Ruby \u3089\u3057\u3044\u66f8\u304d\u65b9\u306b\u306a\u308a\u307e\u3059\u3002 \u65e9\u308f\u304b\u308a\u307e\u3068\u3081 \u30e1\u30bd\u30c3\u30c9 \u5411\u3044\u3066\u3044\u308b\u7528\u9014 each \u914d\u5217\u30fb\u30cf\u30c3\u30b7\u30e5\u306e\u5168\u8981\u7d20\u3092\u51e6\u7406\u3059\u308b times n \u56de\u7e70\u308a\u8fd4\u3059 upto / downto \u6570\u5024\u306e\u7bc4\u56f2\u3092\u9806\u306b\u51e6\u7406\u3059\u308b map / collect \u5909\u63db\u3057\u305f\u65b0\u3057\u3044\u914d\u5217\u3092\u4f5c\u308b each_with_index \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3082\u4f7f\u3044\u306a\u304c\u3089\u7e70\u308a\u8fd4\u3059 each_with_object \u7d50\u679c\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u7a4d\u307f\u4e0a\u3052\u308b each\uff1a\u914d\u5217\u306e\u5168\u8981\u7d20\u3092\u51e6\u7406\u3059\u308b n\u2026","image_url":null,"version":"1.0","width":"100%","height":"190","type":"rich","blog_url":"https://tech.fun-toy-life.com/","title":"Ruby \u306e\u7e70\u308a\u8fd4\u3057\u51e6\u7406\uff1aeach\u30fbtimes\u30fbmap \u306e\u4f7f\u3044\u5206\u3051","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftech.fun-toy-life.com%2Fentry%2F2026%2F06%2F30%2F215319\" title=\"Ruby \u306e\u7e70\u308a\u8fd4\u3057\u51e6\u7406\uff1aeach\u30fbtimes\u30fbmap \u306e\u4f7f\u3044\u5206\u3051 - 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","author_name":"plarail_hangout","published":"2026-06-30 21:53:19","url":"https://tech.fun-toy-life.com/entry/2026/06/30/215319","provider_name":"Hatena Blog","categories":["Ruby"]}