{"provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/sinsoku/","published":"2019-01-01 23:56:28","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsinsoku.hatenablog.com%2Fentry%2F2019%2F01%2F01%2F235628\" title=\"ruby\u306eflat_map\u3092\u3061\u3083\u3093\u3068\u7406\u89e3\u3057\u305f - \u30a2\u30b8\u30e3\u30a4\u30ebSE\u306e\u6182\u9b31\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","description":"2019\u5e74\u306e\u6700\u521d\u3060\u3057\u3001\u30d6\u30ed\u30b0\u3067\u3082\u66f8\u3044\u3066\u307f\u3088\u3046\u3068\u3044\u3046\u8a66\u307f\u3002 \u4e8b\u306e\u767a\u7aef\u306e\u30c4\u30a4\u30fc\u30c8 \u30b3\u30fc\u30c9\u8aad\u3093\u3067\u3044\u3066\u9055\u548c\u611f\u3042\u308b\u3051\u3069\u3001\u4fee\u6b63\u3057\u306a\u304f\u3066\u3082\u52d5\u3044\u3066\u3044\u308b\u5834\u5408\u306e\u30ec\u30d3\u30e5\u30fc\u304c\u96e3\u3057\u3044\u3002\u4f8b\u3048\u3070\u3001\u7121\u99c4\u306a\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u3068\u304b\u3002def foo(x) a = x.flat_map(&:bar) (a + [1]).flattenend\u2014 \u795e\u901f (@sinsoku_listy) 2018\u5e7412\u670831\u65e5 \u3053\u306e\u4f8b\u306f\u300cflat_map\u4f7f\u3063\u3066\u3044\u308b\u3057\u3001flatten\u8981\u3089\u306a\u3044\u3088\u306d\u300d\u3063\u3066\u610f\u56f3\u3060\u3063\u305f\u3051\u3069\u3001@kamipo\u3055\u3093\u3084@hanachin_\u3055\u3093\u304b\u3089bar\u304c\u30cd\u30b9\u30c8\u3057\u305f\u914d\u5217\u3092\u8fd4\u3059\u3068\u304d\u306f\u5fc5\u8981\u3068\u3044\u3046\u30ea\u30d7\u30e9\u30a4\u3092\u9802\u3044\u305f\u3002 flat_map\u3088\u304f\u5206\u304b\u3089\u306a\u304f\u306a\u2026","title":"ruby\u306eflat_map\u3092\u3061\u3083\u3093\u3068\u7406\u89e3\u3057\u305f","image_url":null,"blog_title":"\u30a2\u30b8\u30e3\u30a4\u30ebSE\u306e\u6182\u9b31","categories":["ruby"],"version":"1.0","width":"100%","height":"190","blog_url":"https://sinsoku.hatenablog.com/","author_name":"sinsoku","provider_url":"https://hatena.blog","url":"https://sinsoku.hatenablog.com/entry/2019/01/01/235628"}