{"id":4744,"date":"2014-12-04T10:00:24","date_gmt":"2014-12-04T01:00:24","guid":{"rendered":"http:\/\/www.vincentina.net\/?p=4744"},"modified":"2021-12-23T00:18:13","modified_gmt":"2021-12-22T15:18:13","slug":"10%e9%80%b2%e3%81%ae%e6%b5%ae%e5%8b%95%e5%b0%8f%e6%95%b0%e7%82%b9%e3%81%ae%e4%b8%8d%e6%80%9d%e8%ad%b0","status":"publish","type":"post","link":"https:\/\/www.vincentina.net\/?p=4744","title":{"rendered":"10\u9032\u306e\u6d6e\u52d5\u5c0f\u6570\u70b9\u306e\u4e0d\u601d\u8b70"},"content":{"rendered":"

\u6700\u8fd1Ruby\u3092\u55dc\u3080\u7a0b\u5ea6\u3067\u59cb\u3081\u305f\u306e\u3067\u3059\u304c\u3001irb\u3067\u3044\u308d\u3044\u308d\u3084\u3063\u3066\u305f\u3089\u4e0d\u601d\u8b70\u306a\u73fe\u8c61\u304c\u8d77\u3053\u3063\u305f\u300210\u9032\u306e\u6d6e\u52d5\u5c0f\u6570\u70b9\u306e\u4e0d\u601d\u8b70\u306a\u8a71\u3002\u305f\u3076\u3093\u30012\u9032\u6570<\/span><\/strong>\u3001\u5909\u6570<\/span>\u3001\u6700\u9069\u5316<\/span>\u3068\u304b\u306e\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u8abf\u3079\u3066\u3082\u3046\u3061\u3087\u3044\u7a81\u304d\u9032\u3093\u3067\u3044\u3051\u3070\u5206\u304b\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3051\u308c\u3069\u3001\u3072\u3068\u307e\u305a\u533a\u5207\u308a\u3092\u3002<\/p>\n

\u8a08\u7b97\u304b\u3089\u3002<\/p>\n

irb(main):001:0> 1+1
\n=> 2
\nirb(main):004:0* 1\/3
\n=> 0
\nirb(main):005:0> 1.000\/3.000
\n=> 0.3333333333333333<\/p>\n

\u307e\u3041\u3001\u3053\u3053\u307e\u3067\u306f\u5206\u304b\u308b\u3002<\/p>\n

3.3\u306b\u306a\u306b\u304c\u3042\u308b\u306e\u304b\u3002
\n\u8272\u3005\u8a66\u3057\u305f\u308c\u3069\u30013.3\u306b\u306a\u308b\u3082\u306e\u306f0000003\u304c\u304a\u5c3b\u306b\u3064\u304f\u3089\u3057\u3044\u3002<\/p>\n

irb(main):007:0* 1.1+2.2
\n=> 3.3000000000000003
\nirb(main):001:0> 3.3+3.3
\n=> 6.6
\nirb(main):005:0> 1.2+2.3
\n=> 3.5
\nirb(main):006:0> 2.2+3.3
\n=> 5.5
\nirb(main):008:0* 1.0+2.0
\n=> 3.0
\nirb(main):012:0* 4.4+5.5
\n=> 9.9
\nirb(main):014:0* 2.2+3.3
\n=> 5.5
\nirb(main):017:0* 1.0+2.2
\n=> 3.2
\nirb(main):018:0> 1.1+2.0
\n=> 3.1<\/p>\n

3.33\u306f\u3044\u3044\u3089\u3057\u3044\u3002<\/p>\n

irb(main):020:0> 1.11+2.22
\n=> 3.33<\/p>\n

3.30\u306f\u30c0\u30e1\u30023.3\u306f\u5f31\u70b9\u306a\u306e\u3060\u308d\u3046\u304b\u3002<\/p>\n

irb(main):021:0> 1.10+2.20
\n=> 3.3000000000000003<\/p>\n

0.3\u3082\u30c0\u30e1\u3060\u3063\u305fw<\/p>\n

irb(main):024:0> 0.1+0.1+0.1
\n=> 0.30000000000000004<\/p>\n

\u3042\u30010.3\u304c\u30c0\u30e1\u306a\u306e\u304b\uff01<\/span>\u3068\u5206\u304b\u3063\u305f\u3088\u3046\u306a\u3053\u3068\u3092\u8a00\u3063\u305f\u304c\u3002<\/p>\n

irb(main):002:0* 0.1+0.2
\n=> 0.30000000000000004<\/p>\n

 <\/p>\n

\u305d\u3046\u3067\u3082\u306a\u304b\u3063\u305f\u3000(\u00b4\u30fb\u03c9\u30fb`)<\/span><\/p>\n

irb(main):001:0> 0.09 + 0.21
\n=> 0.3<\/p>\n

\u3067\u306f\u4eca\u5ea6\u306f\uff10\u306b\u306a\u308b\u4e88\u5b9a\u306e\u3082\u306e\u3002<\/p>\n

irb(main):026:0> 0.3-0.3
\n=> 0.0<\/p>\n

\u3053\u308c\u306f0\u3058\u3083\u306a\u3044\u3089\u3057\u3044\u3002<\/p>\n

irb(main):025:0> 0.1+0.1+0.1-0.3
\n=> 5.551115123125783e-17<\/p>\n

\u3053\u3093\u306a\u3053\u3068\u3082\u8d77\u304d\u308b\u3002<\/p>\n

irb(main):004:0> 111.1 + 111.1 + 111.1
\n=> 333.29999999999995
\nirb(main):005:0> 0.1 + 0.1 + 0.1
\n=> 0.30000000000000004<\/p>\n

Tweet<\/a><\/div><\/div>\n
\n","protected":false},"excerpt":{"rendered":"

\u6700\u8fd1Ruby\u3092\u55dc\u3080\u7a0b\u5ea6\u3067\u59cb\u3081\u305f\u306e\u3067\u3059\u304c\u3001irb\u3067\u3044\u308d\u3044\u308d\u3084\u3063\u3066\u305f\u3089\u4e0d\u601d\u8b70\u306a\u73fe\u8c61\u304c\u8d77\u3053\u3063\u305f\u300210\u9032\u306e\u6d6e\u52d5\u5c0f\u6570\u70b9\u306e\u4e0d\u601d\u8b70\u306a\u8a71\u3002\u305f\u3076\u3093\u30012\u9032\u6570\u3001\u5909\u6570\u3001\u6700\u9069\u5316\u3068\u304b\u306e\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u8abf\u3079\u3066\u3082\u3046\u3061\u3087\u3044\u7a81\u304d\u9032\u3093\u3067\u3044\u3051\u3070\u5206\u304b\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3051 … “10\u9032\u306e\u6d6e\u52d5\u5c0f\u6570\u70b9\u306e\u4e0d\u601d\u8b70” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[106],"tags":[],"class_list":["post-4744","post","type-post","status-publish","format-standard","hentry","category-programming"],"_links":{"self":[{"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/posts\/4744","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4744"}],"version-history":[{"count":1,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/posts\/4744\/revisions"}],"predecessor-version":[{"id":7755,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/posts\/4744\/revisions\/7755"}],"wp:attachment":[{"href":"https:\/\/www.vincentina.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}