{"action":"created","issue":{"url":"https://api.github.com/repos/asciidwango/js-primer/issues/100","repository_url":"https://api.github.com/repos/asciidwango/js-primer","labels_url":"https://api.github.com/repos/asciidwango/js-primer/issues/100/labels{/name}","comments_url":"https://api.github.com/repos/asciidwango/js-primer/issues/100/comments","events_url":"https://api.github.com/repos/asciidwango/js-primer/issues/100/events","html_url":"https://github.com/asciidwango/js-primer/issues/100","id":167180350,"number":100,"title":"Number/Math","user":{"login":"azu","id":19714,"avatar_url":"https://avatars.githubusercontent.com/u/19714?v=3","gravatar_id":"","url":"https://api.github.com/users/azu","html_url":"https://github.com/azu","followers_url":"https://api.github.com/users/azu/followers","following_url":"https://api.github.com/users/azu/following{/other_user}","gists_url":"https://api.github.com/users/azu/gists{/gist_id}","starred_url":"https://api.github.com/users/azu/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/azu/subscriptions","organizations_url":"https://api.github.com/users/azu/orgs","repos_url":"https://api.github.com/users/azu/repos","events_url":"https://api.github.com/users/azu/events{/privacy}","received_events_url":"https://api.github.com/users/azu/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/asciidwango/js-primer/labels/%E5%9F%BA%E7%A4%8E%E6%96%87%E6%B3%95","name":"基礎文法","color":"1d76db"}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2016-07-23T11:28:26Z","updated_at":"2016-07-23T11:29:26Z","closed_at":null,"body":"#17 基本文法のNumberについて\r\n\r\n[Number](https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Number \"Number\")は使うところが限られているけど、\r\nJavaScriptが浮動小数点数を使うという説明をしようと思ったら結構使う値が定義されている。\r\nなので、 `0.1 + 0.2 === 0.3 ; // => false` を説明するという流れでNumberの話をしてみるとかは面白いのかも。\r\n\r\n- [You-Dont-Know-JS/ch2.md at master · getify/You-Dont-Know-JS](https://github.com/getify/You-Dont-Know-JS/blob/master/types%20&%20grammar/ch2.md \"You-Dont-Know-JS/ch2.md at master · getify/You-Dont-Know-JS\")\r\n\r\nもう一つは Math の方は数学的な計算に便利なものが色々あるよぐらいの話で終わると思う。\r\n\r\nこの辺を頑張ってるライブラリとしてはmath.jsとか。\r\n\r\n- [math.js | an extensive math library for JavaScript and Node.js](http://mathjs.org/ \"math.js | an extensive math library for JavaScript and Node.js\")\r\n"},"comment":{"url":"https://api.github.com/repos/asciidwango/js-primer/issues/comments/234713492","html_url":"https://github.com/asciidwango/js-primer/issues/100#issuecomment-234713492","issue_url":"https://api.github.com/repos/asciidwango/js-primer/issues/100","id":234713492,"user":{"login":"azu","id":19714,"avatar_url":"https://avatars.githubusercontent.com/u/19714?v=3","gravatar_id":"","url":"https://api.github.com/users/azu","html_url":"https://github.com/azu","followers_url":"https://api.github.com/users/azu/followers","following_url":"https://api.github.com/users/azu/following{/other_user}","gists_url":"https://api.github.com/users/azu/gists{/gist_id}","starred_url":"https://api.github.com/users/azu/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/azu/subscriptions","organizations_url":"https://api.github.com/users/azu/orgs","repos_url":"https://api.github.com/users/azu/repos","events_url":"https://api.github.com/users/azu/events{/privacy}","received_events_url":"https://api.github.com/users/azu/received_events","type":"User","site_admin":false},"created_at":"2016-07-23T11:29:26Z","updated_at":"2016-07-23T11:29:26Z","body":"イマイチ JavaScriptでBigNumberとか精度が必要な計算をする定番の方法を知らない。\r\n何が定番何だろ?"}}
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