{"author_name":"shuzo_kino","published":"2014-11-17 23:50:07","author_url":"https://blog.hatena.ne.jp/shuzo_kino/","type":"rich","height":"190","provider_name":"Hatena Blog","url":"https://shuzo-kino.hateblo.jp/entry/2014/11/17/235007","categories":["ruby"],"width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshuzo-kino.hateblo.jp%2Fentry%2F2014%2F11%2F17%2F235007\" title=\"Active_support\u63d0\u4f9b\u306eEnumerable#sum\u3067\u5408\u7b97\u6642\u306b\u697d\u3092\u3059\u308b - Bye Bye Moore\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"version":"1.0","provider_url":"https://hatena.blog","title":"Active_support\u63d0\u4f9b\u306eEnumerable#sum\u3067\u5408\u7b97\u6642\u306b\u697d\u3092\u3059\u308b","description":"Active_support\u63d0\u4f9b\u306eEnumerable#sum\u3067\u5408\u7b97\u6642\u306b\u697d\u3092\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059 \u4f7f\u3044\u65b9 [1,2,3].sum #=> 6 (1..100).sum #=> 5050 \u30d6\u30ed\u30c3\u30af\u3092\u6e21\u3057\u3066\u3001\u3061\u3087\u3063\u3068\u5165\u308a\u7d44\u3093\u3060\u5408\u7b97\u3092\u3084\u308b\u4e8b\u3082\u53ef\u80fd\u3067\u3059\u3002 \u4e0b\u306e\u4f8b\u3067\u306f\u3001\u5404\u8981\u7d20\u306e\u4e8c\u500d\u3092\u5408\u7b97\u3059\u308b\u4f8b\u3092\u6319\u3052\u3066\u3044\u307e\u3059\u3002 (1..2).sum {|n| n * 2 } => 6 \u6587\u5b57\u5217\u3082\u540c\u3058\u3088\u3046\u306b\u5408\u7b97\u5bfe\u8c61\u3068\u306a\u308a\u307e\u3059\u3002 %w(as you like).sum => \"asyoulike\" %w(as you like).sum {|i| \" \" << i } => \" as you like\" %w(as you li\u2026","blog_title":"Bye Bye Moore","blog_url":"https://shuzo-kino.hateblo.jp/"}