{"title":"\u914d\u5217\u3092\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u5206\u5272\u3059\u308b","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","image_url":null,"categories":[],"blog_title":"Ruby Tips!","author_url":"https://blog.hatena.ne.jp/rubytips86/","version":"1.0","blog_url":"https://rubytips86.hatenablog.com/","width":"100%","published":"2014-03-23 06:18:52","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frubytips86.hatenablog.com%2Fentry%2F2014%2F03%2F23%2F061852\" title=\"\u914d\u5217\u3092\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u5206\u5272\u3059\u308b - Ruby Tips!\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"rubytips86","description":"Array#partition\u3092\u4f7f\u3048\u3070\u3001\u914d\u5217\u3092\u30d6\u30ed\u30c3\u30af\u3092\u6e80\u305f\u3059\u8981\u7d20\u3068\u3001\u305d\u3046\u3067\u306a\u3044\u8981\u7d20\u306b\u5206\u5272\u3057\u305f\u65b0\u3057\u3044\u914d\u5217\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 p [1, 2, 3, 4, 5, 6].partition{|i| i % 2 == 0 } #=> [[2, 4, 6], [1, 3, 5]] \u3088\u308a\u9ad8\u5ea6\u306a\u5206\u5272\u306fArray#group_by\u3067\u884c\u3048\u308b\u3002\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30d6\u30ed\u30c3\u30af\u3092\u8a55\u4fa1\u3057\u305f\u7d50\u679c\u306b\u57fa\u3065\u3044\u3066\u3001\u914d\u5217\u3092\u8907\u6570\u306e\u914d\u5217\u306b\u5206\u5272\u3057\u30cf\u30c3\u30b7\u30e5\u3068\u3057\u3066\u8fd4\u3059\u3002 p [1, 2, 3, 4, 5, 6].group_by{|i| i % 3 } #=> {1=>[1, 4], 2=>[2, 5], 0=>[3, 6]}","height":"190","url":"https://rubytips86.hatenablog.com/entry/2014/03/23/061852","type":"rich"}