{"author_url":"https://blog.hatena.ne.jp/rocklaakira/","description":"\u30aa\u30e9\u30a4\u30ea\u30fc\u672c\u3067\u300c\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306e\u5207\u308a\u6368\u3066\u306fMath.floor\u4f7f\u3046\u3088\u308a node\u3067\u5b9f\u884c\u3057\u3066\u307f\u308b\u3068\u3042\u3093\u307e\u308a\u5dee\u304c\u306a\u3044\u3002 pi = 3.14 bitshift = -> pi<<0 floor = -> Math.floor(pi) funk_timer =(fn)-> start = new Date for i in [0..100000000] fn() console.log (new Date - start) console.log \"bitshift -----\" funk_timer bitshift console.log \"Math.floor -----\" funk_timer f\u2026","blog_url":"https://kimoi.hatenadiary.com/","type":"rich","width":"100%","provider_url":"https://hatena.blog","image_url":null,"categories":["javascript"],"version":"1.0","provider_name":"Hatena Blog","height":"190","blog_title":"\u304d\u3082\u3044\u4ea4\u63db\u65e5\u8a18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkimoi.hatenadiary.com%2Fentry%2F20120817%2F1345203195\" title=\"node\u74b0\u5883\u3060\u3068Math.floor\u4f7f\u3046\u306e\u3068&lt;&lt;\u3067\u30d3\u30c3\u30c8\u6f14\u7b97\u3057\u3066\u3082\u3042\u3093\u307e\u5909\u308f\u3093\u306a\u3044 - \u304d\u3082\u3044\u4ea4\u63db\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"node\u74b0\u5883\u3060\u3068Math.floor\u4f7f\u3046\u306e\u3068<<\u3067\u30d3\u30c3\u30c8\u6f14\u7b97\u3057\u3066\u3082\u3042\u3093\u307e\u5909\u308f\u3093\u306a\u3044","author_name":"rocklaakira","published":"2012-08-17 20:33:15","url":"https://kimoi.hatenadiary.com/entry/20120817/1345203195"}