{"id":161,"date":"2018-12-13T14:33:22","date_gmt":"2018-12-13T14:33:22","guid":{"rendered":"https:\/\/oidema-jp.com\/media\/2018-12-13-143322\/"},"modified":"2018-12-13T14:33:22","modified_gmt":"2018-12-13T14:33:22","slug":"2018-12-13-143322","status":"publish","type":"post","link":"https:\/\/oidema-jp.com\/media\/2018-12-13-143322\/","title":{"rendered":"\u3010Ruby\u3011\u6570\u5b57\u53d6\u308a\u6271\u3044\u6642\u306e\u6ce8\u610f\u70b9"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/oidema-jp.com\/media\/2018-12-13-143322\/#%E6%95%B4%E6%95%B0%E5%90%8C%E5%A3%AB%E3%81%AE%E5%89%B2%E3%82%8A%E7%AE%97\" >\u6574\u6570\u540c\u58eb\u306e\u5272\u308a\u7b97<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/oidema-jp.com\/media\/2018-12-13-143322\/#05%E3%81%A8%E8%A1%A8%E7%A4%BA%E3%81%95%E3%81%9B%E3%81%9F%E3%81%84%E5%A0%B4%E5%90%88\" >0.5\u3068\u8868\u793a\u3055\u305b\u305f\u3044\u5834\u5408<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/oidema-jp.com\/media\/2018-12-13-143322\/#%E6%95%B0%E5%AD%97%E3%81%8C%E5%A4%89%E6%95%B0%E3%81%AB%E6%A0%BC%E7%B4%8D%E3%81%95%E3%82%8C%E3%81%A6%E3%81%84%E3%82%8B%E6%99%82\" >\u6570\u5b57\u304c\u5909\u6570\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u6642<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/oidema-jp.com\/media\/2018-12-13-143322\/#%E3%81%AF%E4%BD%99%E3%82%8A%E3%82%92%E6%B1%82%E3%82%81%E3%82%8B%E6%BC%94%E7%AE%97%E5%AD%90\" >%\u306f\u4f59\u308a\u3092\u6c42\u3081\u308b\u6f14\u7b97\u5b50<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/oidema-jp.com\/media\/2018-12-13-143322\/#%E3%81%B9%E3%81%8D%E4%B9%97%E3%82%92%E6%B1%82%E3%82%81%E3%82%8B%E6%BC%94%E7%AE%97%E5%AD%90\" >\u3079\u304d\u4e57\u3092\u6c42\u3081\u308b\u6f14\u7b97\u5b50**<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/oidema-jp.com\/media\/2018-12-13-143322\/#%E6%9C%80%E5%BE%8C%E3%81%AB\" >\u6700\u5f8c\u306b<\/a><\/li><\/ul><\/nav><\/div>\n<h2 id=\"i-0\"><span class=\"ez-toc-section\" id=\"%E6%95%B4%E6%95%B0%E5%90%8C%E5%A3%AB%E3%81%AE%E5%89%B2%E3%82%8A%E7%AE%97\"><\/span>\u6574\u6570\u540c\u58eb\u306e\u5272\u308a\u7b97<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a class=\"keyword\" href=\"http:\/\/d.hatena.ne.jp\/keyword\/Ruby\">Ruby<\/a>\u3067\u6574\u6570\u540c\u58eb\u3092\u5272\u308a\u7b97\u3059\u308b\u5834\u5408\u3001\u4f8b\u3048\u30701\u00f72\u3068\u304b\u3002<\/p>\n<p>\u666e\u901a\u3067\u3042\u308c\u30701 \u00f7 2 = 0.5\u306b\u306a\u308b\u3068\u8003\u3048\u308b\u304c\u3001<a class=\"keyword\" href=\"http:\/\/d.hatena.ne.jp\/keyword\/Ruby\">Ruby<\/a>\u306e\u5834\u5408\u306f<b><span style=\"color: #d32f2f\">\u5c0f\u6570\u70b9\u304c\u5207\u308a\u6368\u3066\u3089\u308c\u308b<\/span><\/b>\u305f\u30810\u306b\u306a\u308b\u3002<\/p>\n<p>\u3067\u306f\u5b9f\u884c\u3057\u3066\u307f\u308b\u3002<\/p>\n<pre class=\"code\" data-lang=\"\" data-unlink=\"\">irb\nirb(main):001:0&gt; 1\/2\n=&gt; 0\n<\/pre>\n<p>\u4e0b\u8a18\u901a\u308a\u306e\u5207\u308a\u6368\u3066\u3089\u308c\u308b\u305f\u30810\u3068\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u306e\u304c\u308f\u304b\u308b\u3002<\/p>\n<h2 id=\"i-1\"><span class=\"ez-toc-section\" id=\"05%E3%81%A8%E8%A1%A8%E7%A4%BA%E3%81%95%E3%81%9B%E3%81%9F%E3%81%84%E5%A0%B4%E5%90%88\"><\/span>0.5\u3068\u8868\u793a\u3055\u305b\u305f\u3044\u5834\u5408<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6574\u6570\u540c\u58eb\u306e\u5272\u308a\u7b97\u3067\u5c0f\u6570\u70b9\u4ee5\u4e0b\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u6f14\u7b97\u306b\u5229\u7528\u3059\u308b\u3044\u305a\u308c\u304b\u306e\u6570\u5b57\u306b\u5c0f\u6570\u70b9\u4ee5\u4e0b\u3092\u8a18\u8f09\u3059\u308b\u3002<\/p>\n<p>\u3067\u306f\u5b9f\u884c\u3057\u3066\u307f\u308b\u3002<\/p>\n<p>\u4eca\u56de\u306f2\u21922.0\u306b\u5909\u66f4\u3057\u3066\u307f\u308b<\/p>\n<pre class=\"code\" data-lang=\"\" data-unlink=\"\">irb\nirb(main):002:0&gt; 1\/2.0\n=&gt; 0.5\n<\/pre>\n<h2 id=\"i-2\"><span class=\"ez-toc-section\" id=\"%E6%95%B0%E5%AD%97%E3%81%8C%E5%A4%89%E6%95%B0%E3%81%AB%E6%A0%BC%E7%B4%8D%E3%81%95%E3%82%8C%E3%81%A6%E3%81%84%E3%82%8B%E6%99%82\"><\/span>\u6570\u5b57\u304c\u5909\u6570\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u6642<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6574\u6570\u3092\u683c\u7d0d\u3059\u308b\u5909\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u308b\u6642\u3001 \u5148\u307b\u3069\u306e\u3088\u3046\u306b\u76f4\u63a5\u6570\u5b57\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u306e\u3067\u3001\u5c0f\u6570\u70b9\u306e\u5024\u3082\u8868\u793a\u3055\u305b\u305f\u3044\u6642\u3001\u3068\u3066\u3082\u56f0\u308b\u3002<\/p>\n<p>\u305d\u3093\u306a\u3068\u304d\u306f<code>to_f<\/code>\u3092\u5229\u7528\u3059\u308b\u3068\u826f\u3044\u3002<\/p>\n<p>\u3067\u306f\u30b5\u30f3\u30d7\u30eb\u3092\u5b9f\u884c\u3057\u3066\u307f\u308b<\/p>\n<pre class=\"code\" data-lang=\"\" data-unlink=\"\">irb(main):001:0&gt; n = 1\n=&gt; 1\nirb(main):002:0&gt; m = 2\n=&gt; 2\nirb(main):003:0* n.to_f \/ m\n=&gt; 0.5<\/pre>\n<h2 id=\"i-3\"><span class=\"ez-toc-section\" id=\"%E3%81%AF%E4%BD%99%E3%82%8A%E3%82%92%E6%B1%82%E3%82%81%E3%82%8B%E6%BC%94%E7%AE%97%E5%AD%90\"><\/span><code>%<\/code>\u306f\u4f59\u308a\u3092\u6c42\u3081\u308b<a class=\"keyword\" href=\"http:\/\/d.hatena.ne.jp\/keyword\/%B1%E9%BB%BB%BB%D2\">\u6f14\u7b97\u5b50<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4ed6\u306e\u8a00\u8a9e\uff1f\uff08\u3042\u307e\u308a\u8a73\u3057\u304f\u306a\u3044\u304c\uff09mod\u7684\u306a\u5f79\u5272\u3060\u308d\u3046\u304b\u3002<br \/>\n<code>%<\/code>\u306f\u5272\u308a\u7b97\u306e\u4f59\u308a\u3092\u6c42\u3081\u308b<a class=\"keyword\" href=\"http:\/\/d.hatena.ne.jp\/keyword\/%B1%E9%BB%BB%BB%D2\">\u6f14\u7b97\u5b50<\/a>\u3068\u3057\u3066\u5229\u7528\u3067\u304d\u308b\u3002<\/p>\n<p>\u3067\u306f\u5b9f\u884c\u3057\u3066\u307f\u308b\u3002<\/p>\n<pre class=\"code\" data-lang=\"\" data-unlink=\"\">irb(main):018:0* 20 % 3\n=&gt; 2<\/pre>\n<p>20\u30923\u3067\u5272\u3063\u305f\u30896\u4f59\u308a2\u306a\u306e\u3067\u3001\u4f59\u308a\u306e2\u304c\u5e30\u3063\u3066\u304d\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"i-4\"><span class=\"ez-toc-section\" id=\"%E3%81%B9%E3%81%8D%E4%B9%97%E3%82%92%E6%B1%82%E3%82%81%E3%82%8B%E6%BC%94%E7%AE%97%E5%AD%90\"><\/span>\u3079\u304d\u4e57\u3092\u6c42\u3081\u308b<a class=\"keyword\" href=\"http:\/\/d.hatena.ne.jp\/keyword\/%B1%E9%BB%BB%BB%D2\">\u6f14\u7b97\u5b50<\/a><code>**<\/code><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><code>**<\/code>\u306f\u3079\u304d\u4e57\u3092\u6c42\u3081\u308b<a class=\"keyword\" href=\"http:\/\/d.hatena.ne.jp\/keyword\/%B1%E9%BB%BB%BB%D2\">\u6f14\u7b97\u5b50<\/a>\u3067\u3059\u3002<\/p>\n<p>\u3079\u304d\u4e57\u3068\u8a00\u3046\u3068\u4f55\u6545\u304b\u96e3\u3057\u304f\u805e\u3053\u3048\u307e\u3059\u304c\u3001\u8981\u306f2\u306e3\u4e57\u3068\u304b\u305d\u3093\u306a\u3084\u3064\u3067\u3059\u3002<\/p>\n<p>\u3067\u306f\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"code\" data-lang=\"\" data-unlink=\"\">irb(main):021:0* 3**2\n=&gt; 9<\/pre>\n<p>\u4eca\u56de\u306f3\u306e2\u4e57\u3064\u307e\u308a\u30013\u00d73\u3057\u305f\u306e\u3068\u540c\u3058\u306a\u306e\u30679\u304c\u8fd4\u3063\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"i-5\"><span class=\"ez-toc-section\" id=\"%E6%9C%80%E5%BE%8C%E3%81%AB\"><\/span>\u6700\u5f8c\u306b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u3053\u306e\u8a18\u4e8b\u306f<a href=\"https:\/\/www.amazon.co.jp\/%E3%83%97%E3%83%AD%E3%82%92%E7%9B%AE%E6%8C%87%E3%81%99%E4%BA%BA%E3%81%AE%E3%81%9F%E3%82%81%E3%81%AERuby%E5%85%A5%E9%96%80-%E8%A8%80%E8%AA%9E%E4%BB%95%E6%A7%98%E3%81%8B%E3%82%89%E3%83%86%E3%82%B9%E3%83%88%E9%A7%86%E5%8B%95%E9%96%8B%E7%99%BA%E3%83%BB%E3%83%87%E3%83%90%E3%83%83%E3%82%B0%E6%8A%80%E6%B3%95%E3%81%BE%E3%81%A7-Software-Design-plus%E3%82%B7%E3%83%AA%E3%83%BC%E3%82%BA\/dp\/4774193976\">\u30d7\u30ed\u3092\u76ee\u6307\u3059\u4eba\u306e\u305f\u3081\u306eRuby\u5165\u9580<\/a>\u304b\u3089\u5b66\u3093\u3060\u3053\u3068\u3092\u53c2\u8003\u306b\u3057\u3066\u5185\u5bb9\u304c\u4f5c\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><a class=\"keyword\" href=\"http:\/\/d.hatena.ne.jp\/keyword\/Ruby\">Ruby<\/a>\u3092\u672c\u683c\u7684\u306b\u52c9\u5f37\u3057\u305f\u3044\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u308b\u65b9\u306f\u662f\u975e\u3001\u4e0b\u8a18\u30ea\u30f3\u30af\u3088\u308a\u672c\u3092\u8cfc\u5165\u3057\u3066\u52c9\u5f37\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n<p><a target=\"_blank\" href=\"https:\/\/www.amazon.co.jp\/gp\/product\/4774193976\/ref=as_li_tl?ie=UTF8&amp;camp=247&amp;creative=1211&amp;creativeASIN=4774193976&amp;linkCode=as2&amp;tag=keisukegdk-22&amp;linkId=6761ac338134e7b4b20228e093d0f356\" rel=\"noopener\"><img decoding=\"async\" border=\"0\" src=\"\/\/ws-fe.amazon-adsystem.com\/widgets\/q?_encoding=UTF8&amp;MarketPlace=JP&amp;ASIN=4774193976&amp;ServiceVersion=20070822&amp;ID=AsinImage&amp;WS=1&amp;Format=_SL250_&amp;tag=keisukegdk-22\"><\/a><img loading=\"lazy\" decoding=\"async\" src=\"\/\/ir-jp.amazon-adsystem.com\/e\/ir?t=keisukegdk-22&amp;l=am2&amp;o=9&amp;a=4774193976\" width=\"1\" height=\"1\" border=\"0\" alt=\"\" style=\"border:none !important; margin:0px !important;\"><\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/blog.hatena.ne.jp\/keisuke8925gdk\/keisuke8925gdk.hatenablog.com\/subscribe\/iframe\" allowtransparency=\"true\" frameborder=\"0\" scrolling=\"no\" width=\"150\" height=\"28\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6574\u6570\u540c\u58eb\u306e\u5272\u308a\u7b97 Ruby\u3067\u6574\u6570\u540c\u58eb\u3092\u5272\u308a\u7b97\u3059\u308b\u5834\u5408\u3001\u4f8b\u3048\u30701\u00f72\u3068\u304b\u3002 \u666e\u901a\u3067\u3042\u308c\u30701 \u00f7 2 = 0.5\u306b\u306a\u308b\u3068\u8003\u3048\u308b\u304c\u3001Ruby\u306e\u5834\u5408\u306f\u5c0f\u6570\u70b9\u304c\u5207\u308a\u6368\u3066\u3089\u308c\u308b\u305f\u30810\u306b\u306a\u308b\u3002 \u3067\u306f\u5b9f\u884c\u3057\u3066\u307f\u308b\u3002 irb irb(ma &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"footnotes":""},"categories":[11],"tags":[],"class_list":{"0":"post-161","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-ruby","7":"entry","8":"nothumb"},"acf":[],"aioseo_notices":[],"mb":[],"mfb_rest_fields":["title","aioseo_notices"],"_links":{"self":[{"href":"https:\/\/oidema-jp.com\/media\/wp-json\/wp\/v2\/posts\/161","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oidema-jp.com\/media\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/oidema-jp.com\/media\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/oidema-jp.com\/media\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/oidema-jp.com\/media\/wp-json\/wp\/v2\/comments?post=161"}],"version-history":[{"count":0,"href":"https:\/\/oidema-jp.com\/media\/wp-json\/wp\/v2\/posts\/161\/revisions"}],"wp:attachment":[{"href":"https:\/\/oidema-jp.com\/media\/wp-json\/wp\/v2\/media?parent=161"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oidema-jp.com\/media\/wp-json\/wp\/v2\/categories?post=161"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oidema-jp.com\/media\/wp-json\/wp\/v2\/tags?post=161"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}