{"id":19467,"date":"2017-03-10T14:40:04","date_gmt":"2017-03-10T05:40:04","guid":{"rendered":"http:\/\/www.sejuku.net\/blog\/?p=19467"},"modified":"2024-05-06T11:40:50","modified_gmt":"2024-05-06T02:40:50","slug":"ruby-case%e3%82%92%e4%bd%bf%e3%81%84%e3%81%93%e3%81%aa%e3%81%99%e3%81%9f%e3%82%81%e3%81%ae9%e3%81%aetips","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/19467","title":{"rendered":"\u306f\u3058\u3081\u3066\u306eRuby\uff01case\u6587\u306e\u4f7f\u3044\u65b9\u3092\u30de\u30b9\u30bf\u30fc\u3057\u3088\u3046\uff01"},"content":{"rendered":"

Ruby\u306b\u306f\u6761\u4ef6\u6587\u3068\u3057\u3066if\u6587\u3068case\u6587\u304c\u3042\u308a\u307e\u3059\u3002<\/strong><\/span><\/p>\n

case\u6587\u306fif\u6587\u540c\u69d8\u306b\u6761\u4ef6\u5f0f\u306b\u3088\u3063\u3066\u51e6\u7406\u3092\u5206\u5c90\u3055\u305b\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n

\u300c\u8907\u6570\u306e\u6761\u4ef6\u5f0f\u3092\u7c21\u6f54\u306b\u8a18\u8ff0\u3057\u305f\u3044\u300d
\n\u300ccase\u6587\u306e\u4f7f\u3044\u65b9\u3092\u57fa\u672c\u304b\u3089\u77e5\u308a\u305f\u3044\u300d<\/strong><\/p>\n

\u3068\u3044\u3046\u65b9\u306b\u5411\u3051\u3066case\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u306b\u3064\u3044\u3066\u4ee5\u4e0b\u306e\u5185\u5bb9\u3067\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n

\n\u3010\u57fa\u790e\u3011<\/strong><\/span>ruby\u306ecase\u306e\u57fa\u672c
\n\u3010\u57fa\u790e\u3011<\/strong><\/span>case\u6587\u306e\u57fa\u672c\u3092\u307e\u305a\u306f\u7406\u89e3\u3057\u3088\u3046
\n\u3010\u57fa\u790e\u3011<\/strong><\/span>when\u306b\u8907\u6570\u306e\u6761\u4ef6\u3092\u8a2d\u5b9a\u3057\u3066\u307f\u3088\u3046
\n\u3010\u767a\u5c55\u3011<\/strong><\/span>\u7bc4\u56f2\uff08Range\uff09\u3092\u6307\u5b9a\u3059\u308b
\n\u3010\u767a\u5c55\u3011<\/strong><\/span>\u6b63\u898f\u8868\u73fe\uff08regex\uff09\u3092\u6307\u5b9a\u3059\u308b
\n\u3010\u767a\u5c55\u3011<\/strong><\/span>if\/elsif\u3068\u306e\u6bd4\u8f03
\n\u3010\u767a\u5c55\u3011<\/strong><\/span>case\u3067break\u306f\u6307\u5b9a\u3067\u304d\u308b\u306e\uff1f\n<\/div>\n

case\u6587\u306fif\u6587\u540c\u69d8\u51e6\u7406\u3092\u5206\u5c90\u3059\u308b\u3068\u304d\u306b\u3088\u304f\u4f7f\u3044\u307e\u3059\u306e\u3067\u3001\u4f7f\u3044\u65b9\u3092\u3057\u3063\u304b\u308a\u3068\u30de\u30b9\u30bf\u30fc\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n

case\u6587\u3068\u306f<\/h2>\n

case\u6587\u306f\u6bd4\u8f03\u3059\u308b\u5024\u3092\u6307\u5b9a<\/strong><\/span>\u3057\u3066\u3001\u8907\u6570\u306e\u6761\u4ef6\u5f0f\u306e\u4e2d\u304b\u3089\u4e00\u81f4\u3057\u305f\u6761\u4ef6\u306b\u8a18\u8ff0\u3055\u308c\u3066\u3044\u308b\u51e6\u7406\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n

case\u6587\u306e\u66f8\u304d\u65b9\u306f\u4ee5\u4e0b\u3068\u306a\u308a\u307e\u3059\u3002
\n\"\"<\/p>\n

\u4ed6\u306e\u8a00\u8a9e\u306e\u3088\u3046\u306bSwitch\u301ccase\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u306f\u305b\u305a\u3001case\u301cwhen<\/strong><\/span>\u3067\u8a18\u8f09\u3057\u307e\u3059\u3002<\/p>\n

case\u306b\u6307\u5b9a\u3057\u305f\u300c\u5bfe\u8c61\u300d\u304cwhen\u306b\u6307\u5b9a\u3057\u305f\u6761\u4ef6\u306e\u3069\u308c\u304b\u306b\u5f53\u3066\u306f\u307e\u308b<\/strong><\/span>\u5834\u5408\u3001\u305d\u308c\u306b\u3042\u3066\u306f\u307e\u3063\u305f\u51e6\u7406\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n

\u3082\u3057\u3069\u308c\u306b\u3082\u5f53\u3066\u306f\u307e\u3089\u306a\u3044\u5834\u5408\u306f\u3001else<\/strong><\/span>\u306b\u3042\u308b\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u308b\u6d41\u308c\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

case\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/h2>\n

\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u6307\u5b9a\u3057\u305f\u5024\u304cwhen\u306e\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u304b\u78ba\u8a8d\u3057\u3001\u4e00\u81f4\u3057\u305f\u5834\u5408\u306f\u3042\u3066\u306f\u307e\u3063\u305fwhen\u306e\u51e6\u7406\u3092\u5b9f\u884c\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

a = 2\r\n \r\ncase a\r\nwhen 1 then\r\n  puts "1st"\r\nwhen 2 then\r\n  puts "2nd"\r\nwhen 3 then\r\n  puts "3rd"\r\nelse\r\n  puts "any else"\r\nend<\/pre>\n
\u5b9f\u884c\u7d50\u679c<\/p>\n
2nd<\/pre>\n
\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001case\u306b2\u304c\u683c\u7d0d\u3055\u308c\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8a\u3092\u6307\u5b9a\u3057\u3001when\u306e\u6761\u4ef6\u3067\u5024\u30921,2,3\u3067\u305d\u308c\u305e\u308c\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
a\u306e\u5024\u306f\u300cwhen 2 then\u300d\u306b\u5f53\u3066\u306f\u307e\u308b\u306e\u3067\u3001\u5f53\u3066\u306f\u307e\u3063\u305f\u6761\u4ef6\u306e\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u6587\u5b57\u5217\u3092\u6bd4\u8f03\u3059\u308b\u5bfe\u8c61\u306b\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
fruits = "orange"\r\n \r\ncase fruits\r\nwhen "apple" then\r\n  puts "apple"\r\nwhen "orange" then\r\n  puts "orange"\r\nwhen "melon" then\r\n  puts "melon"\r\nelse\r\n  puts "any else"\r\nend<\/pre>\n
\u5b9f\u884c\u7d50\u679c<\/p>\n
orange<\/pre>\n
\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u6587\u5b57\u5217\u300corange\u300d\u304c\u683c\u7d0d\u3055\u308c\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u300cwhen \u201corange\u201d then\u300d\u306b\u4e00\u81f4\u3057\u307e\u3059\u3002<\/p>\n
when\u306b\u8907\u6570\u306e\u6761\u4ef6\u3092\u8a2d\u5b9a\u3057\u3066\u307f\u3088\u3046<\/h2>\n
case\u306ewhen\u306e\u6761\u4ef6\u306b\u306f\u3001\u30ab\u30f3\u30de\u300c,\u300d\u3067\u533a\u5207\u3063\u3066\u8907\u6570\u306e\u6761\u4ef6\u3092\u66f8\u304f<\/strong><\/span>\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u8907\u6570\u66f8\u3044\u305f\u6761\u4ef6\u306e\u3044\u305a\u308c\u304b\u304c\u300c\u5bfe\u8c61\u300d\u3068\u30de\u30c3\u30c1\u3057\u305f\u5834\u5408\u3001when\u306e\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u5b9f\u969b\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
a = 4\r\n \r\ncase a\r\nwhen 1, 2, 3 then\r\n  puts "lower then 4th"\r\nwhen 4, 5 then\r\n  puts "from 4th to 5th"\r\nwhen 6 then\r\n  puts "6th"\r\nelse\r\n  puts "any else"\r\nend<\/pre>\n
\u5b9f\u884c\u7d50\u679c<\/p>\n
from 4th to 5th<\/pre>\n
\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001when\u306b\u8907\u6570\u306e\u6761\u4ef6\u3092\u30ab\u30f3\u30de\u3067\u533a\u5207\u3063\u3066\u4e26\u3079\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u4e26\u3079\u305f\u6761\u4ef6\u5f0f\u306e\u3044\u305a\u308c\u304b\u304c\u300c\u5bfe\u8c61\u300d\u3068\u30de\u30c3\u30c1\u3057\u305f\u3068\u304d\u3001\u305d\u306ewhen\u306e\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u4e0a\u8a18\u30b3\u30fc\u30c9\u306e\u5834\u5408\u3001a\u306b4\u304c\u5165\u3063\u3066\u3044\u308b\u305f\u3081\u3001when 4, 5 then \u306b\u30de\u30c3\u30c1\u3057\u3001p \u201cfrom 4th to 5th\u201d\u3068\u3044\u3046\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
case\u6587\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9<\/h2>\n
when\u306b\u306f\u69d8\u3005\u306a\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
\u305d\u306e\u4e2d\u3067\u3082\u7279\u306b\u5b9f\u969b\u306e\u4f7f\u7528\u983b\u5ea6\u304c\u9ad8\u3044\u3082\u306e\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n
\u7bc4\u56f2\uff08Range\uff09\u3092\u6307\u5b9a\u3059\u308b<\/h3>\n
\u305f\u3068\u3048\u3070\u3001\u30b7\u30e7\u30c3\u30d4\u30f3\u30b0\u30b5\u30a4\u30c8\u306b\u3066\u30e6\u30fc\u30b6\u306e\u5e74\u9f62\u306b\u5fdc\u3058\u3066\u3001\u30aa\u30b9\u30b9\u30e1\u3059\u308b\u5546\u54c1\u3092\u308f\u3051\u308b\u51e6\u7406\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002<\/p>\n
\u305d\u306e\u969b\u3001\u5e74\u9f62\u306e\u5e45\u3092\u7bc4\u56f2\u3067\u6307\u5b9a\u3059\u308b\u3088\u3046\u306b\u6761\u4ef6\u5206\u5c90\u3092\u4f5c\u6210\u3059\u308b\u3068\u3057\u307e\u3059\u3002<\/p>\n
\u305d\u306e\u3088\u3046\u306a\u3068\u304d\u3001when\u306b\u8a18\u8f09\u3059\u308b\u6761\u4ef6\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
a = 25 #\u5e74\u9f62\r\n \r\ncase a\r\nwhen 6..22 then\r\n  puts "\u5b66\u751f\u751f\u6d3b\u306b\u5fc5\u8981\u306a\u30aa\u30b9\u30b9\u30e1\u5546\u54c1"\r\nwhen 23..59 then\r\n  puts "\u793e\u4f1a\u4eba\u751f\u6d3b\u306b\u5fc5\u8981\u306a\u30aa\u30b9\u30b9\u30e1\u5546\u54c1"\r\nwhen 60..100 then\r\n  puts "\u5b9a\u5e74\u5f8c\u306e\u4eba\u751f\u306b\u30aa\u30b9\u30b9\u30e1\u306a\u5546\u54c1"\r\nelse\r\n  puts "any else"\r\nend<\/pre>\n
\u5b9f\u884c\u7d50\u679c<\/p>\n
\u793e\u4f1a\u4eba\u751f\u6d3b\u306b\u5fc5\u8981\u306a\u30aa\u30b9\u30b9\u30e1\u5546\u54c1<\/pre>\n
\u201c..\u201d\u306f\u5e45\u3092\u8868\u3057\u3066\u304a\u308a\u3001\u5de6\u306e\u6570\u5b57\u304b\u3089\u53f3\u306e\u6570\u307e\u3067\u306e\u7bc4\u56f2<\/strong><\/span>\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u305d\u3057\u3066\u3001\u5bfe\u8c61\u306e\u5e74\u9f62\u306b\u5f53\u3066\u306f\u307e\u308b\u5e45\u306b\u3066\u51e6\u7406\u304c\u6b63\u3057\u304f\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u6b63\u898f\u8868\u73fe\uff08regex\uff09\u3092\u6307\u5b9a\u3059\u308b<\/h3>\n
\u6b63\u898f\u8868\u73fe\u3082when\u306e\u6761\u4ef6\u306b\u306f\u3088\u304f\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u5b9f\u969b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
a = "SUB-DH003-A"\r\n \r\ncase a\r\nwhen \/^A.+\/ then\r\n  puts "Item series A"\r\nwhen \/^B.+A$\/ then\r\n  puts "Item series B patch A"\r\nwhen \/^SUB.+A$\/ then\r\n  puts "Item series SUB patch A"\r\nelse\r\n  puts "any else"\r\nend<\/pre>\n
\u5b9f\u884c\u7d50\u679c<\/p>\n
Item series SUB patch A<\/pre>\n
\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001case\u306ewhen\u306e\u6761\u4ef6\u306b\u6b63\u898f\u8868\u73fe\u3092\u66f8\u304f\u3053\u3068\u3067\u3001\u6b63\u898f\u8868\u73fe\u306b\u3088\u308b\u6761\u4ef6\u691c\u7d22\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n
\u6b63\u898f\u8868\u73fe\u306f\u6163\u308c\u306a\u3044\u5185\u306f\u7406\u89e3\u304c\u96e3\u3057\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u6570\u3092\u3053\u306a\u3059\u3053\u3068\u3067\u5f37\u529b\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u6b66\u5668\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u6b63\u898f\u8868\u73fe\u3068\u306f\u305d\u3082\u305d\u3082\u4f55\u304b\u4e0d\u5b89\u306a\u65b9\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3092\u4e8b\u524d\u306b\u78ba\u8a8d\u3057\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u3010Ruby\u306e\u6b63\u898f\u8868\u73fe\uff01\u3011\u57fa\u790e\u306e\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067\u5fb9\u5e95\u89e3\u8aac\uff01<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
\u914d\u5217\uff08Array\uff09\u3092\u6307\u5b9a\u3059\u308b<\/h3>\n
\u914d\u5217\uff08Array\uff09\u306f\u305d\u306e\u307e\u307e\u3001when\u306e\u6761\u4ef6\u5f0f\u306b\u306f\u66f8\u3051\u307e\u305b\u3093\u3002<\/strong><\/span><\/p>\n
\u3067\u306f\u3001\u3069\u3046\u3059\u308c\u3070\u914d\u5217\u3092when\u306b\u66f8\u3051\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n
\u7b54\u3048\u306f\u3001\u914d\u5217\u306e\u524d\u306b\u30a2\u30b9\u30bf\u30ea\u30b9\u30af\u300c*\u300d<\/strong><\/span>\u3092\u4ed8\u3051\u3066\u3001\u914d\u5217\u3092\u5c55\u958b\u3057when\u306b\u8a8d\u8b58\u3055\u305b\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n
\u3053\u3061\u3089\u3082\u5177\u4f53\u7684\u306a\u30b5\u30f3\u30d7\u30eb\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
a = 4\r\n \r\ncase a\r\nwhen *[ 1, 2, 3 ] then\r\n  puts "lower then 4th"\r\nwhen *[ 4, 5 ] then\r\n  puts "from 4th to 5th"\r\nwhen *[ 6 ] then\r\n  puts "6th"\r\nelse\r\n  puts "any else"\r\nend<\/pre>\n
\u5b9f\u884c\u7d50\u679c<\/p>\n
from 4th to 5th<\/pre>\n
a = 4 \u3067\u3059\u306e\u3067\u3001when *[ 4, 5 ] then\u306e\u3068\u3053\u308d\u3067\u30de\u30c3\u30c1\u3057\u3001p \u201cfrom 4th to 5th\u201d \u304c\u5b9f\u884c\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002<\/p>\n
\u914d\u5217\u306f\u5c55\u958b\u3055\u308c\u308b\u3068\u3001\u30ab\u30f3\u30de\u533a\u5207\u308a\u306e\u6570\u5024\u306e\u30ea\u30b9\u30c8\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u4e0a\u8a18\u30b3\u30fc\u30c9\u306f\u3001\u5b9f\u8cea\u4e0b\u8a18\u30b3\u30fc\u30c9\u3068\u7b49\u3057\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n
a = 4\r\n \r\ncase a\r\nwhen 1, 2, 3 then\r\n  puts "lower then 4th"\r\nwhen 4, 5 then\r\n  puts "from 4th to 5th"\r\nwhen 6 then\r\n  puts "6th"\r\nelse\r\n  puts "any else"\r\nend<\/pre>\n
\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001case\u306ewhen\u306b\u914d\u5217\u3092\u3057\u3066\u3044\u3059\u308b\u6642\u306b\u306f\u3001\u5fc5\u305a\u914d\u5217\u3092\u5c55\u958b\u3057\u3066\u3001\u30ea\u30b9\u30c8\u5f62\u5f0f\u306e\u6761\u4ef6\u5f0f\u306b\u3059\u308b\u3088\u3046\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
array(\u914d\u5217)\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u3010Ruby\u306e\u914d\u5217\u3011\u57fa\u790e\u304b\u3089\u767a\u5c55\u307e\u3067\u3092\u7db2\u7f85\u3057\u307e\u3057\u305f\uff01<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
\u30af\u30e9\u30b9\uff08Class\uff09\u3092\u6307\u5b9a\u3059\u308b<\/h3>\n
ruby\u306b\u306f\u69d8\u3005\u306a\u30af\u30e9\u30b9\u304c\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n
\u6587\u5b57\u5217\u3092\u6271\u3046String\u30af\u30e9\u30b9\u3001\u6570\u5024\u3092\u6271\u3046Numeric\u30af\u30e9\u30b9\u3001\u914d\u5217\u3092\u6271\u3046Array\u30af\u30e9\u30b9\u306a\u3069\u304c\u305d\u308c\u306b\u3042\u305f\u308a\u307e\u3059\u3002<\/p>\n
\u305d\u306e\u3088\u3046\u306a\u30af\u30e9\u30b9\u306e\u7a2e\u985e\u3092when\u306e\u6761\u4ef6\u306b\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u3069\u306e\u30af\u30e9\u30b9\u306b\u8a72\u5f53\u3059\u308b\u3082\u306e\u304b\u3092\u691c\u7d22\u3059\u308b\u51e6\u7406\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
\u3067\u306f\u3001\u5177\u4f53\u7684\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
a = "\u304a\u306f\u3088\u3046"\r\n \r\ncase a\r\nwhen Numeric then\r\n  puts "\u6570\u5024\u3067\u3059\u3002"\r\nwhen String then\r\n  puts "\u6587\u5b57\u5217\u3067\u3059\u3002"\r\nwhen Array then\r\n  puts "\u914d\u5217\u3067\u3059\u3002"\r\nwhen Range then\r\n  puts "\u7bc4\u56f2\u3067\u3059\u3002"\r\nelse\r\n  puts "\u305d\u308c\u4ee5\u5916\u3067\u3059\u3002"\r\nend<\/pre>\n
\u5b9f\u884c\u7d50\u679c<\/p>\n
\u6587\u5b57\u5217\u3067\u3059\u3002<\/pre>\n
String\u3084Numeric\u306a\u3069\u30af\u30e9\u30b9\u306e\u540d\u79f0\u3092when\u306b\u6307\u5b9a\u3057\u3066\u691c\u7d22\u3067\u304d\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u5c11\u3005\u7279\u6b8a\u306a\u4f7f\u3044\u65b9\u306b\u898b\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u3044\u304b\u306bwhen\u304c\u67d4\u8edf\u306a\u66f8\u304d\u65b9\u306e\u3067\u304d\u308b\u3082\u306e\u304b\u3068\u3044\u3046\u306e\u304c\u3088\u304f\u304a\u5206\u304b\u308a\u9802\u3051\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
if\/elsif\u3068\u306e\u6bd4\u8f03<\/h2>\n
case\u6587\u3068\u3088\u304f\u6bd4\u8f03\u3055\u308c\u308b\u51e6\u7406\u3068\u3057\u3066if\/elsif\u6587<\/strong><\/span>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u51e6\u7406\u3068\u3057\u3066\u306f\u3069\u3061\u3089\u3082\u8907\u6570\u306e\u6761\u4ef6\u3092\u6271\u3046\u3082\u306e\u3068\u306a\u308a\u307e\u3059\u304c\u3001case\u6587\u306e\u65b9\u304c\u6bd4\u8f03\u7684\u898b\u901a\u3057\u306e\u826f\u3044\u30b3\u30fc\u30c9\u306b\u306a\u308a\u3084\u3059\u3044<\/strong><\/span>\u3067\u3059\u3002<\/p>\n
\u305d\u306e\u7406\u7531\u3068\u3057\u3066\u3001if\/elsif\u6587\u306e\u65b9\u304c\u51e6\u7406\u4e2d\u306b\u4f55\u5ea6\u3082\u201d\u5bfe\u8c61\u201d\u304c\u51fa\u3066\u304f\u308b\u70b9\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n
if  \u6761\u4ef61 === \u5bfe\u8c61  then\r\n  \u51e6\u74061\r\nelsif  \u6761\u4ef62  === \u5bfe\u8c61  then\r\n  \u51e6\u74062\r\nelsif \u6761\u4ef63  === \u5bfe\u8c61  then\r\n  \u51e6\u74063\r\nelsif  \u30fb\u30fb\u30fb  then\r\n \u30fb\u30fb\u30fb\r\nelse\r\n  \u3069\u306e\u6761\u4ef6\u306b\u3082\u30de\u30c3\u30c1\u3057\u306a\u3044\u5834\u5408\u306b\u5b9f\u884c\u3059\u308b\u51e6\u7406\r\nend<\/pre>\n
\u4e0a\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u4e2d\u3001\u201d\u5bfe\u8c61\u201d\u304c3\u7b87\u6240\u3067\u3066\u304d\u307e\u3059\u3002<\/p>\n
case\u6587\u3067\u306f1\u7b87\u6240\u3060\u3051\u3067\u3057\u305f\u3002<\/p>\n
\u3053\u306e\u9055\u3044\u304c\u30b3\u30fc\u30c9\u306e\u898b\u901a\u3057\u304c\u826f\u3044\u304b\u60aa\u3044\u304b\u306e\u5927\u304d\u306a\u9055\u3044\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u305d\u306e\u305f\u3081\u3001\u8907\u6570\u306e\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u3001if\/elsif\u3067\u306f\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u304c\u843d\u3061\u3066\u3057\u307e\u3044\u307e\u3059<\/strong><\/span>\u306e\u3067\u3001\u3046\u307e\u304f\u4f7f\u3044\u5206\u3051\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
if\/elsif\u6587\u542b\u3081\u305fif\u6587\u5168\u4f53\u306b\u3064\u3044\u3066\u7406\u89e3\u3092\u6df1\u3081\u305f\u3044\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u3010Ruby\u5165\u9580\u3011if\u3084if else\u306e\u57fa\u672c\u304b\u3089AND\u3084OR\u3092\u4f7f\u3046\u5fdc\u7528\u307e\u3067\u5b8c\u5168\u89e3\u8aac!!<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
case\u3067break\u306f\u6307\u5b9a\u3067\u304d\u308b\u306e\uff1f<\/h2>\n
C\u8a00\u8a9e\u306a\u3069\u3001\u4ed6\u306e\u8a00\u8a9e\u3067\u306fcase\u6587\u307e\u305f\u306f\u305d\u308c\u3068\u540c\u7b49\u306eswitch\u6587\u306b\u3066\u3001break<\/strong><\/span>\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001case\u306ewhen\u306e\u30b3\u30fc\u30c9\u3092\u9014\u4e2d\u3067\u7d42\u4e86\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u3057\u304b\u3057\u3001ruby\u306ecase\u3067\u306f\u3001break\u306f\u4f7f\u7528\u3067\u304d\u307e\u305b\u3093\u3002<\/strong><\/span><\/p>\n
\u5b9f\u969b\u306e\u30b3\u30fc\u30c9\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff1a<\/p>\n
a = 2\r\n\r\ncase a\r\nwhen 1 then\r\n  puts \"start\"\r\n  break\r\n  puts \"1st\"\r\nwhen 2 then\r\n  puts \"start\"\r\n  break\r\n  puts \"2nd\"\r\nwhen 3 then\r\n  puts \"start\"\r\n  break\r\n  puts \"3rd\"\r\nelse\r\n  puts \"start\"\r\n  break\r\n  puts \"any else\"\r\nend<\/pre>\n
\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
C:\/localhost\/ruby.rb: C:\/localhost\/ruby.rb:6: Invalid break (SyntaxError)\r\nC:\/localhost\/ruby.rb:10: Invalid break\r\nC:\/localhost\/ruby.rb:14: Invalid break\r\nC:\/localhost\/ruby.rb:18: Invalid break<\/pre>\n
\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001case\u306ewhen\u306bbreak\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u6587\u6cd5\u30a8\u30e9\u30fc\uff08SyntaxError\uff09<\/strong><\/span>\u304c\u51fa\u3066\u3044\u307e\u3059\u306d\u3002<\/p>\n
\u3082\u3068\u3082\u3068case\u3084switch\u306ebreak\u306f\u3001\u4e00\u3064\u306ewhen\u306e\u6761\u4ef6\u3092\u30b9\u30ad\u30c3\u30d7\u3057\u3066\u6b21\u306ewhen\u306e\u6761\u4ef6\u5224\u5b9a\u306b\u79fb\u884c<\/strong><\/span>\u3059\u308b\u305f\u3081\u306e\u6587\u3067\u3057\u305f\u3002<\/p>\n
\u3057\u304b\u3057\u3001ruby\u306ecase\u306ewhen\u306f\u8907\u6570\u306e\u6761\u4ef6\u5f0f\u3092\u4e26\u3079\u3089\u308c\u308b\u306e\u3067\u3001break\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/strong><\/span><\/p>\n
\u7686\u3055\u3093\u3082\u6c17\u3092\u3064\u3051\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
\u307e\u3068\u3081<\/h2>\n
\u3053\u3053\u3067\u306fcase\u6587\u306b\u3064\u3044\u3066\u3001<\/p>\n
    \n
  • ruby\u306ecase\u6587\u306e\u57fa\u672c<\/li>\n
  • when\u306b\u8907\u6570\u306e\u6761\u4ef6\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5<\/li>\n
  • \u7bc4\u56f2\uff08Range\uff09\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5<\/li>\n
  • \u6b63\u898f\u8868\u73fe\uff08regex\uff09\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5<\/li>\n
  • if\/elsif\u3068\u306e\u6bd4\u8f03<\/li>\n
  • case\u3067break\u306f\u6307\u5b9a\u3067\u304d\u308b\u306e\uff1f<\/li>\n<\/ul>\n
    \u306a\u3069\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002<\/p>\n
    case\u306e\u610f\u5473\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u307cif\/elsif<\/strong><\/span>\u3068\u540c\u3058\u3067\u3059\u3002<\/p>\n
    if\/elsif\u3092case\u3067\u3088\u308a\u7c21\u6f54\u306b\u66f8\u3051\u3001\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027\u304c\u5897\u3059\u3057\u3001\u6a5f\u80fd\u3082\u8c4a\u5bcc<\/strong><\/span>\u3068\u3044\u3046\u3053\u3068\u3092\u899a\u3048\u3089\u308c\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n
    \u307e\u305f\u3001case\u306f\u305d\u308c\u3060\u3051\u3067\u306a\u304f\u3001\u7bc4\u56f2\u3084\u6b63\u898f\u8868\u73fe\u3001\u914d\u5217\u3001\u30af\u30e9\u30b9\u3067\u3082\u3001\u7c21\u6f54\u306a\u30b3\u30fc\u30c9\u3067\u7c21\u5358\u306b\u6761\u4ef6\u5206\u5c90\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n
    \u3053\u306e\u3088\u3046\u306bruby\u306ecase\u306f\u899a\u3048\u3066\u304a\u304f\u3068\u975e\u5e38\u306b\u5f37\u529b\u306a\u6b66\u5668\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
    \u307e\u305f\u3001case\u306e\u5b9f\u884c\u7d50\u679c\u3092\u5909\u6570\u306b\u4ee3\u5165\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n
    case\u306e\u5b9f\u884c\u7d50\u679c\u3092\u3001case\u4ee5\u964d\u306e\u30b3\u30fc\u30c9\u306b\u6e21\u3059\u969b\u306b\u3088\u304f\u4f7f\u7528<\/strong><\/span>\u3057\u307e\u3059\u306e\u3067\u3001\u3053\u3061\u3089\u3082\u899a\u3048\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
    ruby\u306ecase\u306e\u4f7f\u3044\u65b9\u3092\u5fd8\u308c\u305f\u3089\u3001\u307e\u305f\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u307f\u8fd4\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    Ruby\u306b\u306f\u6761\u4ef6\u6587\u3068\u3057\u3066if\u6587\u3068case\u6587\u304c\u3042\u308a\u307e\u3059\u3002 case\u6587\u306fif\u6587\u540c\u69d8\u306b\u6761\u4ef6\u5f0f\u306b\u3088\u3063\u3066\u51e6\u7406\u3092\u5206\u5c90\u3055\u305b\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002 \u300c\u8907\u6570\u306e\u6761\u4ef6\u5f0f\u3092\u7c21\u6f54\u306b\u8a18\u8ff0\u3057\u305f\u3044\u300d \u300ccase\u6587\u306e\u4f7f\u3044\u65b9\u3092\u57fa\u672c\u304b\u3089\u77e5\u308a\u305f\u3044\u300d \u3068\u3044\u3046\u65b9\u306b\u5411 […]<\/p>\n","protected":false},"author":16433,"featured_media":68291,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"swell_btn_cv_data":"","footnotes":""},"categories":[2352],"tags":[114,68],"class_list":["post-19467","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ruby-study","tag-ruby","tag-68"],"acf":[],"yoast_head":"\n\u306f\u3058\u3081\u3066\u306eRuby\uff01case\u6587\u306e\u4f7f\u3044\u65b9\u3092\u30de\u30b9\u30bf\u30fc\u3057\u3088\u3046\uff01 | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0<\/title>\n<meta name=\"description\" content=\"\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c \u306f\u3058\u3081\u3066\u306eRuby\uff01case\u6587\u306e\u4f7f\u3044\u65b9\u3092\u30de\u30b9\u30bf\u30fc\u3057\u3088\u3046\uff01 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