{"image_url":null,"provider_name":"Hatena Blog","author_name":"basyura","url":"https://blog.basyura.org/entry/20090702/p1","title":" 3 \u9031\u76ee\u3067\u9593\u9055\u3048\u305f\u554f\u984c","blog_url":"https://blog.basyura.org/","blog_title":"basyura's blog","width":"100%","type":"rich","author_url":"https://blog.hatena.ne.jp/basyura/","description":"Array#unshift list = [1,2,3,4,5] list.unshift nil #=> [nil, 1, 2, 3, 4, 5] unshift \u4f7f\u3063\u305f\u3053\u3068\u7121\u3044\u306e\u3082\u3042\u3063\u3066\u77e5\u3089\u306a\u304b\u3063\u305f\u3002 Hash#invert \u3068 Hash#sort map = {1=>\"A\",2=>\"B\",3=>\"4\"} map.invert #=> {\"A\"=>1, \"B\"=>2, \"4\"=>3} map.sort #=> [[1, \"A\"], [2, \"B\"], [3, \"4\"]] Hash#invert \u3068 Hash#sort \u306e\u4f7f\u3044\u3069\u3053\u308d\u306f\u3069\u3053\u306a\u3093\u3060\u30fb\u30fb\u30fb map.sort.each{|a,b| \u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.basyura.org%2Fentry%2F20090702%2Fp1\" title=\" 3 \u9031\u76ee\u3067\u9593\u9055\u3048\u305f\u554f\u984c - basyura&#39;s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2009-07-02 00:00:00","categories":["ruby"],"height":"190","version":"1.0","provider_url":"https://hatena.blog"}