{"id":8618,"date":"2019-12-18T21:03:00","date_gmt":"2019-12-18T12:03:00","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=8618"},"modified":"2023-05-27T22:32:35","modified_gmt":"2023-05-27T13:32:35","slug":"%e3%80%90ruby%e3%80%91%e6%9d%a1%e4%bb%b6%e5%88%86%e5%b2%90","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=8618","title":{"rendered":"\u3010Ruby\u3011\u6761\u4ef6\u5206\u5c90\/\u7e70\u308a\u8fd4\u3057\u51e6\u7406"},"content":{"rendered":"<h2>\u6761\u4ef6\u5206\u5c90<\/h2>\n<h3>\u57fa\u672c<\/h3>\n<pre class=\"lang:default decode:true\">if \u6761\u4ef61\r\n  \u6761\u4ef61\u306b\u8a72\u5f53\u3059\u308b\u51e6\u7406\r\nelsif \u6761\u4ef62\r\n  \u6761\u4ef62\u306b\u8a72\u5f53\u3059\u308b\u51e6\u7406\r\nelse\r\n  \u305d\u308c\u4ee5\u5916\u306e\u51e6\u7406\r\nend<\/pre>\n<p>\u6ce8\u610f\u70b9\u3068\u3057\u3066\u306f\u4ed6\u306e\u8a00\u8a9e\u3067\u306f\u5f53\u305f\u308a\u524d\u306e\u300celseif\u300d\u3067\u306f\u306a\u304f<span style=\"color: #ff0000;\"><strong>\u300celsif\u300d<\/strong><\/span>\u3068\u306a\u308b\u70b9\u3067\u3059\u3002<\/p>\n<h3>unless<\/h3>\n<p>if\u3068\u306f\u53cd\u5bfe\u306e\u610f\u5473\u3067\u4f7f\u308f\u308c\u308b<span style=\"color: #ff0000;\"><strong>\u300cunless\u300d<\/strong><\/span>\u304c\u3042\u308a\u307e\u3059\u3002\uff08\u306a\u304a\u3001\u7121\u7406\u306bunless\u3092\u4f7f\u3046\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u57fa\u672c\u7684\u306b\u306fif\u3067OK\u3067\u3059\u304c\u4eba\u304c\u3082\u3057unless\u3092\u4f7f\u3063\u3066\u3044\u305f\u5834\u5408\u306b\u610f\u5473\u3092\u628a\u63e1\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\uff09<\/p>\n<pre class=\"lang:default decode:true\">unless \u6761\u4ef6\r\n  \u6761\u4ef6\u306b\u8a72\u5f53\u3057\u306a\u3044\u5834\u5408\u306b\u5b9f\u884c\u3057\u305f\u3044\u51e6\u7406\r\nelse\r\n  \u6761\u4ef6\u306b\u8a72\u5f53\u3059\u308b\u5834\u5408\u306b\u5b9f\u884c\u3057\u305f\u3044\u51e6\u7406\r\nend<\/pre>\n<p>unless\u3067\u306f<span style=\"color: #ff0000;\"><strong>elsif\u306b\u8a72\u5f53\u3059\u308b\u3082\u306e\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/strong><\/span><\/p>\n<h3>\u5f8c\u7f6eif\u3001\u5f8c\u7f6eunless<\/h3>\n<p>if\u6587\u3084unless\u6587\u3092\u5f8c\u65b9\u306b\u6301\u3063\u3066\u304d\u3066\u8a55\u4fa1\u3055\u305b\u308b\u65b9\u6cd5\u3067Ruby\u3067\u306f\u3088\u304f\u898b\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true \">a = 'test'\r\nputs a if a == 'test'<\/pre>\n<h3>\u4e09\u9805\u6f14\u7b97\u5b50<\/h3>\n<p>\u5358\u7d14\u306a\u5206\u5c90\u306e\u5834\u5408\u306f\u7a4d\u6975\u7684\u306b\u4f7f\u3046\u3002<\/p>\n<pre class=\"lang:default decode:true\">\u6761\u4ef6 ? '\u771f\u3060\u3063\u305f\u5834\u5408\u306e\u7d50\u679c' : '\u507d\u3060\u3063\u305f\u5834\u5408\u306e\u7d50\u679c'<\/pre>\n<h3>case<\/h3>\n<pre class=\"lang:default decode:true\">case \u5bfe\u8c61\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3084\u5f0f\r\nwhen \u50241\r\n  \u50241\u306b\u4e00\u81f4\u3059\u308b\u51e6\u7406\r\nwhen \u50242\r\n  \u50242\u306b\u4e00\u81f4\u3059\u308b\u51e6\u7406\r\nelse\r\n  \u3069\u306e\u5024\u306b\u3082\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u306e\u51e6\u7406\r\nend<\/pre>\n<p>\u7528\u9014\u3068\u3057\u3066\u306f\u3001if\u3067<span style=\"color: #ff0000;\"><strong>\u591a\u304f\u306eelsif\u3092\u7a4d\u307f\u91cd\u306d\u308b\u3088\u308a\u306fcase\u3067\u66f8\u3044\u305f\u65b9\u304c\u3088\u308a\u3059\u3063\u304d\u308a\u898b\u3084\u3059\u304f\u306a\u308b\u306e\u3067\u4f7f\u3044\u307e\u3059\u3002<\/strong><\/span><\/p>\n<h4>\u5024\u306e\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3<\/h4>\n<p>\u5358\u306b\u5358\u4e00\u306e\u5024\u3060\u3051\u3067\u306a\u304f\u4e0b\u8a18\u306e\u3088\u3046\u306a\u7a2e\u985e\u3082\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<h5>Range\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/h5>\n<pre class=\"lang:default decode:true\">when (1..5)<\/pre>\n<h5>\u8907\u6570\u306e\u5024<\/h5>\n<pre class=\"lang:default decode:true\">when '\u50241','\u50242','\u50243'<\/pre>\n<h2>\u7e70\u308a\u8fd4\u3057\u51e6\u7406<\/h2>\n<h3>each<\/h3>\n<pre class=\"lang:default decode:true\">\u914d\u5217\u3084\u30cf\u30c3\u30b7\u30e5 .each do |\u5909\u6570|\uff08\u30cf\u30c3\u30b7\u30e5\u306e\u5834\u5408\u306f|k,v|\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002\uff09\r\n\u3000\u3000#\u7e70\u308a\u8fd4\u3057\u305f\u3044\u51e6\u7406\r\nend<\/pre>\n<p>\u5168\u304f\u540c\u3058\u3067\u3059\u304c\u66f8\u304d\u65b9\u3092\u5909\u3048\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">\u914d\u5217\u3084\u30cf\u30c3\u30b7\u30e5.each do { |\u5909\u6570|\r\n\u3000\u3000#\u7e70\u308a\u8fd4\u3057\u305f\u3044\u51e6\u7406\r\n}<\/pre>\n<h3>times<\/h3>\n<p>\u6c7a\u3081\u3089\u308c\u305f\u56de\u6570\u5206\u3060\u3051\u30eb\u30fc\u30d7\u3055\u305b\u305f\u3044\u5834\u5408\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">\u7e70\u308a\u8fd4\u3057\u56de\u6570.times do |i|(i\u306f\u7701\u7565\u53ef\u80fd\u3067\u3059\u3002\uff09\r\n  #\u7e70\u308a\u8fd4\u3057\u305f\u3044\u51e6\u7406\r\nend<\/pre>\n<p>\u540c\u3058\u3088\u3046\u306b\u66f8\u304d\u65b9\u3092\u5909\u3048\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">\u7e70\u308a\u8fd4\u3057\u56de\u6570.times { |i|(i\u306f\u7701\u7565\u53ef\u80fd\u3067\u3059\u3002\uff09\r\n  #\u7e70\u308a\u8fd4\u3057\u305f\u3044\u51e6\u7406\r\n}<\/pre>\n<h3>while<\/h3>\n<pre class=\"lang:default decode:true\">while \u5b9f\u884c\u3059\u308b\u6761\u4ef6 do\r\n#\u7e70\u308a\u8fd4\u3057\u5b9f\u884c\u3057\u305f\u3044\u51e6\u7406\r\nend<\/pre>\n<h3>upto<\/h3>\n<p>\u958b\u59cb\u5024\u304b\u3089\u7d42\u4e86\u5024\u307e\u30671\u305a\u3064\u30ab\u30a6\u30f3\u30c8\u30a2\u30c3\u30d7\u3055\u305b\u308b\u3002<\/p>\n<pre class=\"lang:default decode:true\">\u958b\u59cb\u5024.upto(\u7d42\u4e86\u5024) { |\u5909\u6570| \u7e70\u308a\u8fd4\u3057\u305f\u3044\u51e6\u7406}<\/pre>\n<h3>downto<\/h3>\n<p>\u958b\u59cb\u5024\u304b\u3089\u7d42\u4e86\u5024\u307e\u30671\u305a\u3064\u30ab\u30a6\u30f3\u30c8\u30c0\u30a6\u30f3\u3055\u305b\u308b\u3002<\/p>\n<pre class=\"lang:default decode:true\">\u958b\u59cb\u5024.downto(\u7d42\u4e86\u5024) { |\u5909\u6570| \u7e70\u308a\u8fd4\u3057\u305f\u3044\u51e6\u7406}<\/pre>\n<h3>step<\/h3>\n<pre class=\"lang:default decode:true\">\u958b\u59cb\u5024.step(\u4e0a\u9650\u5024,\u4e00\u5ea6\u306b\u5897\u6e1b\u3059\u308b\u5927\u304d\u3055){}<\/pre>\n<h3>loop<\/h3>\n<pre class=\"lang:default decode:true\">loop do\r\n  #\u7e70\u308a\u8fd4\u3057\u51e6\u7406\r\nend<\/pre>\n<p>\u7121\u9650\u30eb\u30fc\u30d7\u306b\u306a\u308b\u306e\u3067\u3001break\u7b49\u306e\u30eb\u30fc\u30d7\u5185\u5236\u5fa1\u69cb\u6587\u3092\u4f7f\u3063\u3066\u5236\u5fa1\u3092\u884c\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u306e\u5236\u5fa1\u69cb\u6587<\/h3>\n<h4>break<\/h4>\n<p>\u5185\u5074\u306e\u30eb\u30fc\u30d7\u3060\u3051\u8131\u51fa\u3067\u304d\u307e\u3059\u3002<\/p>\n<h4>throw \u301c catch<\/h4>\n<p>\u591a\u91cd\u30eb\u30fc\u30d7\u306b\u306a\u3063\u3066\u3044\u305f\u969b\u306b\u3001\u4e00\u6c17\u306b\u5916\u5074\u306b\u8131\u51fa\u3059\u308b\u305f\u3081\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">catch \u30bf\u30b0 do\r\n  #\u7e70\u308a\u8fd4\u3057\u51e6\u7406\r\n  throw \u30bf\u30b0\r\nend<\/pre>\n<h4>next<\/h4>\n<pre class=\"lang:default decode:true\">next if \u6761\u4ef6\uff08\u771f\u306a\u3089\u6b21\u306e\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u306b\u9032\u3080\uff09<\/pre>\n<p>\u6761\u4ef6\u306b\u5408\u81f4\u3057\u305f\u5834\u5408\u306b\u3001\u6b21\u306e\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u306b\u9032\u3081\u307e\u3059\u3002<\/p>\n<h4>redo<\/h4>\n<p><span style=\"color: #ff0000;\"><strong>\u5b8c\u5168\u306b\u521d\u56de\u304b\u3089\u3084\u308a\u76f4\u3059\u306e\u3067\u306a\u304f\u3001\u73fe\u5728\u306e\u30eb\u30fc\u30d7\u306e\u6700\u521d\u304b\u3089\u3084\u308a\u76f4\u3059\u5834\u5408<\/strong><\/span>\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u6761\u4ef6\u5206\u5c90 \u57fa\u672c if \u6761\u4ef61 \u6761\u4ef61\u306b\u8a72\u5f53\u3059\u308b\u51e6\u7406 elsif \u6761\u4ef62 \u6761\u4ef62\u306b\u8a72\u5f53\u3059\u308b\u51e6\u7406 else \u305d\u308c\u4ee5\u5916\u306e\u51e6\u7406 end \u6ce8\u610f\u70b9\u3068\u3057\u3066\u306f\u4ed6\u306e\u8a00\u8a9e\u3067\u306f\u5f53\u305f\u308a\u524d\u306e\u300celseif\u300d\u3067\u306f\u306a\u304f\u300celsif\u300d\u3068\u306a\u308b\u70b9\u3067\u3059\u3002 u [&hellip;]","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[48],"tags":[],"_links":{"self":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/8618"}],"collection":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8618"}],"version-history":[{"count":18,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/8618\/revisions"}],"predecessor-version":[{"id":20472,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/8618\/revisions\/20472"}],"wp:attachment":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8618"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}