{"id":14743,"date":"2017-01-26T18:36:36","date_gmt":"2017-01-26T09:36:36","guid":{"rendered":"http:\/\/www.sejuku.net\/blog\/?p=14743"},"modified":"2024-05-06T11:40:14","modified_gmt":"2024-05-06T02:40:14","slug":"%e3%80%90%e5%ae%8c%e5%85%a8%e7%b6%b2%e7%be%85%e3%80%91ruby%e6%96%87%e5%ad%97%e5%88%97%e3%81%ae%e9%80%a3%e7%b5%90%e6%96%b9%e6%b3%95%e3%81%be%e3%81%a8%e3%82%81","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/14743","title":{"rendered":"\u3010Ruby\u5165\u9580\u3011join\u306e\u4f7f\u3044\u65b9\u307e\u3068\u3081 (File map joins)"},"content":{"rendered":"

\u3053\u3093\u306b\u3061\u306f! \u30d5\u30ea\u30fc\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u9577\u702c\u3067\u3059\u3002<\/p>\n

\u307f\u306a\u3055\u3093\u306fjoin<\/strong><\/span>\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u304b\uff1f<\/p>\n

join\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3092\u4f7f\u3044\u3053\u306a\u305b\u3070\u3001\u7279\u5b9a\u306e\u6587\u5b57\u3092\u631f\u3093\u3067\u914d\u5217\u3092\u9023\u7d50\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/strong><\/span><\/p>\n

\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001ruby\u306ejoin\u306b\u3064\u3044\u3066<\/p>\n

\u30fb \u6587\u5b57\u5217\u3092\u9023\u7d50\u3059\u308b
\n\u30fb +(\u901a\u5e38\u306e\u9023\u7d50\u30e1\u30bd\u30c3\u30c9)
\n\u30fb \u6570\u5024\u3068\u306e\u9023\u7d50
\n\u30fb join(\u914d\u5217\u3092\u9023\u7d50)<\/strong><\/span><\/p>\n

\u3068\u3044\u3046\u57fa\u672c\u7684\u306a\u5185\u5bb9\u304b\u3089\u3001<\/p>\n

\u30fb push (\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u9023\u7d50)
\n\u30fb concat (\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u9023\u7d50)
\n\u30fb \u63a5\u982d\u8f9e(prefix)\u3092\u3064\u3051\u3066\u9023\u7d50
\n\u30fb \u5927\u6587\u5b57\u306b\u3057\u3066\u9023\u7d50
\n\u30fb URL\u3092\u9023\u7d50\u3059\u308b(File#join)
\n\u30fb Rails\u306ejoins\u3067\u30c6\u30fc\u30d6\u30eb\u3092\u7d50\u5408\u3059\u308b<\/strong><\/span><\/p>\n

\u3068\u3044\u3063\u305f\u5fdc\u7528\u7684\u306a\u5185\u5bb9\u306b\u3064\u3044\u3066\u3082\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n

\u6587\u5b57\u5217\u3092\u9023\u7d50\u3059\u308b<\/h2>\n

\"shutterstock_119356303\"
\n\u305d\u308c\u3067\u306f\u6587\u5b57\u5217\u306e\u9023\u7d50\u306b\u3064\u3044\u3066\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n

+(\u901a\u5e38\u306e\u9023\u7d50\u30e1\u30bd\u30c3\u30c9)<\/h3>\n

\u307e\u305a\u306f\u3058\u3081\u306b\u7d39\u4ecb\u3059\u308b\u306e\u306f\u300c+\u300d<\/strong><\/span>\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n

\u307f\u305f\u307e\u307e\u610f\u5473\u304c\u60f3\u50cf\u3067\u304d\u308b\u308f\u304b\u308a\u3084\u3059\u3044\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u9023\u7d50\u3092\u884c\u3046\u306b\u3042\u305f\u3063\u3066\u4e00\u756a\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3067\u3059\u3002<\/p>\n

p "ruby" + "python"\r\np "\u6625\u590f" + "\u79cb\u51ac"<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
 "rubypython"\r\n "\u6625\u590f\u79cb\u51ac"<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u76f4\u611f\u7684\u306b\u6587\u5b57\u5217\u3092\u9023\u7d50<\/strong><\/span>\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u6570\u5024\u3068\u306e\u9023\u7d50<\/h3>\n
\u3068\u3066\u3082\u4fbf\u5229\u306a\u300c+\u300d\u3067\u3059\u304c\u3001\u6570\u5024\u3068\u9023\u7d50\u3059\u308b\u969b\u306f\u6ce8\u610f\u304c\u5fc5\u8981<\/strong><\/span>\u3067\u3059\u3002<\/p>\n
p "ruby" + 1<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
TypeError: no implicit conversion of Integer into String<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u6570\u5b57\u3068\u9023\u7d50\u3059\u308b\u3068\u30a8\u30e9\u30fc<\/strong><\/span>\u304c\u51fa\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n
\u3053\u308c\u306finteger\u578b\u3068string\u578b\u3092\u7d50\u5408\u3057\u3088\u3046\u3068\u3057\u305f\u304b\u3089\u3067\u3059\u3002<\/p>\n
\u305d\u306e\u305f\u3081\u300cto_s\u300d\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001integer\u578b\u3092string\u578b<\/strong><\/span>\u306b\u3057\u3066\u3042\u3052\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
p "ruby" + 1.to_s<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
 "ruby1"<\/pre>\n
\u6570\u5024\u3068\u9023\u7d50\u3059\u308b\u969b\u306b\u306f\u578b\u3092\u3057\u3063\u304b\u308a\u78ba\u304b\u3081\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n
\u7834\u58ca\u7684\u9023\u7d50\u30e1\u30bd\u30c3\u30c9<\/h3>\n
\u6587\u5b57\u5217\u306e\u9023\u7d50\u30e1\u30bd\u30c3\u30c9\u306b\u306f\u30ec\u30b7\u30fc\u30d0\u3054\u3068\u5909\u66f4\u3057\u3066\u3057\u307e\u3046\u3001\u7834\u58ca\u7684\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002
\n\u305d\u308c\u304c\u300c<<\u300d\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3067\u3059\u3002<\/p>\n
string1 = "ruby"\r\nstring2 = "python"\r\n\r\nstring1 + string2 #\u975e\u7834\u58ca\u7684\u30e1\u30bd\u30c3\u30c9\r\np string1 \r\n\r\nstring1 << string2 #\u7834\u58ca\u7684\u30e1\u30bd\u30c3\u30c9\r\np string1<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
 \r\n\"ruby\"\r\n\"rubypython\"\r\n<\/pre>\n
\u300c+\u300d\u3067\u9023\u7d50\u3057\u305f\u6642\u306f\u3001\u30ec\u30b7\u30fc\u30d0\u81ea\u8eab\u306b\u5909\u66f4\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u300c<<\u300d\u3067\u9023\u7d50\u3057\u305f\u6642\u306f\u3001\u30ec\u30b7\u30fc\u30d0\u81ea\u8eab\u5909\u66f4\u3055\u308c\u3066\u3044\u308b<\/strong><\/span>\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002
\n\u3053\u306e\u3088\u3046\u306b\u540c\u3058\u9023\u7d50\u30e1\u30bd\u30c3\u30c9\u3067\u3082\u51e6\u7406\u304c\u9055\u3046\u306e\u3067\u3001\u6ce8\u610f\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n
join(\u914d\u5217\u3092\u9023\u7d50)<\/h3>\n
\u6587\u5b57\u5217\u306e\u9023\u7d50\u3068\u306f\u5c11\u3057\u96e2\u308c\u3066\u3057\u307e\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u914d\u5217\u3092\u9023\u7d50\u3057\u3066\u4e00\u3064\u306e\u6587\u5b57\u5217\u306b\u3059\u308b\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002
\n\u914d\u5217\u3092\u9023\u7d50\u3059\u308b\u969b\u306b\u4f7f\u7528\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u304c\u300cjoin\u30e1\u30bd\u30c3\u30c9\u300d<\/strong><\/span>\u3067\u3059\u3002<\/p>\n
array = ['ruby', 'python']\r\np array.join<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
 "rubypython"<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u914d\u5217\u3092\u9023\u7d50\u3057\u3066\u4e00\u3064\u306e\u6587\u5b57\u5217\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u305d\u3057\u3066\u3001join\u306b\u306f\u533a\u5207\u308a\u6587\u5b57\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n
array = ['ruby', 'python','java']\r\np array.join(',')<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
"ruby,python,java"<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001\u6307\u5b9a\u3057\u305f\u6587\u5b57\u3067\u533a\u5207\u3063\u3066<\/strong><\/span>\u9023\u7d50\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u3053\u306e\u3088\u3046\u306b\u30b3\u30f3\u30de\u3067\u533a\u5207\u308c\u3070csv\u5f62\u5f0f\u3067\u51fa\u529b\u3057\u305f\u3044<\/strong><\/span>\u3068\u304d\u306b\u4f7f\u3048\u307e\u3059\u3002<\/p>\n
\u307e\u305f\u3001\u914d\u5217\u306e\u8981\u7d20\u304c\u914d\u5217\u3067\u3042\u3063\u305f\u5834\u5408\u306f<\/p>\n
array = [['ruby','rails'],['python','django']]\r\np array.join(' ')<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
"ruby rails python django"<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001\u5e73\u5766\u5316\u3055\u308c\u3066<\/strong><\/span>\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n
push (\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u9023\u7d50)<\/h3>\n
push\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3092\u4f7f\u3048\u3070\u3001\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u9023\u7d50\u3067\u304d\u307e\u3059\u3002<\/p>\n
array = ['ruby', 'python','java']\r\np array.push("swift","php")<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
\r\n[\"ruby\", \"python\", \"java\", \"swift\", \"php\"]\r\n<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001\u914d\u5217\u306e\u672b\u5c3e\u306b"swift"\u3068"php"\u3092\u9023\u7d50\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n
\u3067\u306f\u3001\u914d\u5217\u81ea\u4f53\u3092push\u3057\u305f\u5834\u5408<\/strong><\/span>\u306f\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n
array = ['ruby', 'python','java']\r\narray2 = ["swift","php"]\r\np array.push(array2)<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
["ruby", "python", "java", ["swift", "php"]]<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001\u914d\u5217\u81ea\u4f53\u3092push\u3057\u305f\u5834\u5408\u306f\u591a\u6b21\u5143\u914d\u5217\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u306a\u306e\u3067\u3001\u3082\u3057\u3082\u5e73\u5766\u5316\u3057\u305f\u3044\u5834\u5408\u306f\u3001flatten\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
array = ['ruby', 'python','java']\r\narray2 = ["swift","php"]\r\np array.push(array2).flatten<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
["ruby", "python", "java", "swift", "php"]<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001flatten\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u3063\u3066\u8981\u7d20\u3092\u76f4\u63a5\u8ffd\u52a0\u3057\u305f\u72b6\u614b\u3068\u540c\u3058\u7d50\u679c<\/strong><\/span>\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n
concat (\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u9023\u7d50)<\/h3>\n
concat\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3092\u4f7f\u3048\u3070\u3001push\u3068\u540c\u3058\u3088\u3046\u306b\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u305f\u3060\u3001concat\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u306e\u5834\u5408\u306f\u3001push\u3068\u9055\u3063\u3066\u3001\u914d\u5217\u81ea\u4f53\u3092\u9023\u7d50\u3057\u305f\u5834\u5408\u306bflatten\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3092\u4f7f\u3063\u3066\u4e00\u6b21\u5143\u306e\u914d\u5217\u306b\u623b\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/strong><\/span><\/p>\n
array = ['ruby', 'python','java']\r\narray2 = ["swift","php"]\r\np array.concat(array2)<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
["ruby", "python", "java", "swift", "php"]<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001flatten\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3092\u4f7f\u308f\u306a\u304f\u3066\u3082\u3001\u4e00\u6b21\u5143\u306e\u914d\u5217\u3068\u3057\u3066\u9023\u7d50\u3067\u304d\u307e\u3059\u3002<\/p>\n
join\u3092map\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u3046<\/h2>\n
map\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3092\u4f7f\u3048\u3070\u3001\u914d\u5217\u306e\u5404\u8981\u7d20\u306b\u7279\u5b9a\u306e\u6f14\u7b97\u3092\u52a0\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u672c\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u3066\u3044\u308bjoin\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3068\u3082\u76f8\u6027\u304c\u3044\u3044<\/strong><\/span>\u306e\u3067\u3001\u3044\u304f\u3064\u304b\u4fbf\u5229\u306a\u4f7f\u3044\u65b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n
\u63a5\u982d\u8f9e(prefix)\u3092\u3064\u3051\u3066\u9023\u7d50<\/h3>\n
map\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3067\u63a5\u982d\u8f9e(prefix)\u3092\u3064\u3051\u3066\u304b\u3089\u3001join\u3092\u4f7f\u3063\u3066\u914d\u5217\u306e\u8981\u7d20\u3092\u9023\u7d50\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
array = ["joy","grave","rich"]\r\np array.map{|a| "en#{a}"}.join(" ")<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
"enjoy engrave enrich"<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001map\u30e1\u30bd\u30c3\u30c9\u3067\u914d\u5217\u306e\u8981\u7d20\u3092\u30d6\u30ed\u30c3\u30af\u306b\u6e21\u3057\u305f\u306e\u3061\u306b\u3001join\u3067\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u3092\u631f\u3093\u3067\u9023\u9023\u7d50\u3057\u3066\u3044\u307e\u3059\u3002
\n(\u3061\u306a\u307f\u306b\u4eca\u56de\u306fen\u304c\u5148\u982d\u306b\u4ed8\u304f\u3068\u52d5\u8a5e\u306b\u306a\u308b\u3082\u306e\u3092\u96c6\u3081\u3066\u307f\u307e\u3057\u305f\u3002)<\/p>\n
\u5927\u6587\u5b57\u306b\u3057\u3066\u9023\u7d50<\/h3>\n
\u6b21\u306f\u5927\u6587\u5b57\u306b\u5909\u63db\u3057\u3066\u304b\u3089join\u3067\u914d\u5217\u306e\u8981\u7d20\u3092\u9023\u7d50\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
array = ["joy","grave","rich"]\r\np array.map{|a| a.upcase }.join(" ")<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
"JOY GRAVE RICH"<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001upcase\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3092\u4f7f\u3048\u3070\u3001\u3059\u3079\u3066\u5927\u6587\u5b57\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u305d\u3057\u3066\u3001join\u3067\u914d\u5217\u306e\u4e2d\u8eab\u3092\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u3092\u631f\u3093\u3067\u9023\u7d50\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
URL\u3092\u9023\u7d50\u3059\u308b(File#join)<\/h2>\n
ruby\u306ejoin\u306b\u306f\u914d\u5217\u30af\u30e9\u30b9\u306ejoin\u306e\u4ed6\u306bFile\u30af\u30e9\u30b9\u306ejoin\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u3053\u3061\u3089\u306f\u914d\u5217\u306e\u8981\u7d20\u3068\u306f\u95a2\u4fc2\u304c\u306a\u304f\u3001\u305f\u3060URL\u3092\u3046\u307e\u304f\u9023\u7d50<\/strong><\/span>\u3059\u308b\u305f\u3081\u306e\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n
\u3067\u306f\u5b9f\u969b\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
base_url = 'https:\/\/www.hoge.com'\r\nendpoint1 = 'contact'\r\nendpoint2 = 'notification'\r\n\r\np File.join(base_url,endpoint1)\r\np File.join(base_url,endpoint2)<\/pre>\n
[\u5b9f\u884c\u7d50\u679c]<\/strong><\/p>\n
"https:\/\/www.hoge.com\/contact"\r\n"https:\/\/www.hoge.com\/notification"<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001\u76f8\u5bfe\u30d1\u30b9\u304b\u3089\u3001\u7d76\u5bfe\u30d1\u30b9\u306b\u5909\u63db\u3059\u308b\u969b\u306b\u306f\u975e\u5e38\u306b\u4fbf\u5229<\/strong><\/span>\u306a\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n
Rails\u306ejoins\u3067\u30c6\u30fc\u30d6\u30eb\u3092\u7d50\u5408\u3059\u308b<\/h2>\n
Rails\u306b\u306f\u3001join\u3068\u4f3c\u305f\u30e1\u30bd\u30c3\u30c9\u306bjoins\u30e1\u30bd\u30c3\u30c9<\/strong><\/span>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u3053\u3061\u3089\u306fRails\u3067\u30c6\u30fc\u30d6\u30eb\u540c\u58eb\u3092\u7d50\u5408\u3059\u308b<\/strong><\/span>\u305f\u3081\u306e\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n
Rails\u306ejoins\u30e1\u30bd\u30c3\u30c9\u306b\u95a2\u3057\u3066\u306f\u3053\u3061\u3089\u3067\u8a73\u7d30\u306b\u8aac\u660e\u3057\u3066\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u4e00\u8aad\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u3010Rails\u5165\u9580\u3011joins\u306e\u4f7f\u3044\u65b9\u307e\u3068\u3081<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
\u307e\u3068\u3081<\/h2>\n
\u4eca\u56de\u306f\u3001\u4e3b\u306b\u7279\u5b9a\u306e\u6587\u5b57\u3092\u631f\u3093\u3067\u6587\u5b57\u306e\u9023\u7d50<\/strong><\/span>\u304c\u3067\u304d\u308b\u300cjoin\u300d\u3092\u30e1\u30a4\u30f3\u306b\u5b66\u7fd2\u3092\u3057\u307e\u3057\u305f\u3002<\/p>\n
\u6700\u5f8c\u306b\u3001\u30dd\u30a4\u30f3\u30c8\u3092\u3082\u3046\u4e00\u5ea6\u304a\u3055\u3089\u3044\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n
\u30fb +(\u901a\u5e38\u306e\u9023\u7d50\u30e1\u30bd\u30c3\u30c9) \u306f\u57fa\u672c\u7684\u306a\u6587\u5b57\u306e\u9023\u7d50\u306b\u4f7f\u3046\u3002
\n\u30fb \u6570\u5024\u3068\u306e\u9023\u7d50\u3092\u3059\u308b\u5834\u5408\u306fto_s\u3067\u6570\u5024\u3092\u6587\u5b57\u306b\u5909\u63db\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002
\n\u30fb join(\u914d\u5217\u3092\u9023\u7d50)\u3067\u7279\u5b9a\u306e\u6587\u5b57\u3092\u6307\u5b9a\u3057\u3066\u914d\u5217\u3092\u9023\u7d50\u3002\u30b3\u30f3\u30de\u3067join\u3059\u308c\u3070csv\u5f62\u5f0f\u306b\u5909\u63db\u3067\u304d\u308b\u3002
\n\u30fb push\u3067\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u9023\u7d50\u3001\u914d\u5217\u81ea\u4f53\u3092\u9023\u7d50\u3059\u308b\u5834\u5408\u3001\u5e73\u5766\u5316\u3059\u308b\u305f\u3081\u306b\u306fflatten\u304c\u5fc5\u8981\u3002
\n\u30fb concat\u3067\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u9023\u7d50\u3001 \u914d\u5217\u81ea\u4f53\u3092\u9023\u7d50\u3057\u3066\u3082\u306f\u3058\u3081\u304b\u3089\u5e73\u5766\u5316\u3055\u308c\u3066\u3044\u308b\u3002
\n\u30fb \u63a5\u982d\u8f9e(prefix)\u3092\u3064\u3051\u3066\u9023\u7d50\u3001joy\u3001grave\u3001rich\u306a\u3069\u5148\u982d\u306ben\u3092\u3064\u3051\u308b\u3068\u52d5\u8a5e\u306b\u306a\u308b\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002
\n\u30fb \u5927\u6587\u5b57\u306b\u3057\u3066\u9023\u7d50\u3001upcase\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3048\u3070\u3059\u3079\u3066\u5927\u6587\u5b57\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002
\n\u30fb URL\u3092\u9023\u7d50\u3059\u308b(File#join)\u3001\u6587\u5b57\u306e\u9023\u7d50\u3067\u306f\u306a\u3044join\u3002\u7d76\u5bfe\u30d1\u30b9\u3092\u4f5c\u6210\u3059\u308b\u969b\u306b\u306f\u4f7f\u3048\u307e\u3059\u3002<\/strong><\/p>\n
\u4e0a\u8a18\u5185\u5bb9\u3092\u8e0f\u307e\u3048\u3066\u3001\u305c\u3072\u81ea\u5206\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u3082\u7a4d\u6975\u7684\u306b\u6d3b\u7528\u3057\u3066\u3044\u3051\u308b\u3088\u3046\u306b\u9811\u5f35\u308a\u307e\u3057\u3087\u3046\uff01<\/p>\n
Ruby\u306e\u6587\u5b57\u5217\u3092\u3057\u3063\u304b\u308a\u7406\u89e3\u3057\u305f\u3044\u65b9\u306b<\/h4>\n
\u3053\u306e\u8a18\u4e8b\u306f\u6587\u5b57\u5217\u3092\u4f53\u7cfb\u7684\u306b\u89e3\u8aac\u3057\u305f3\u30b9\u30c6\u30c3\u30d7\u3067\u7c21\u5358! Ruby\u306e\u6587\u5b57\u5217\u3092 \u5b8c\u5168\u7406\u89e3<\/a>\u306e\u4e00\u90e8\u3068\u306a\u308a\u307e\u3059\u3002
\n\u6587\u5b57\u5217\u3092\u3055\u3089\u306b\u7406\u89e3\u3057\u305f\u3044\u65b9\u306f\u3053\u3061\u3089\u3092\u8aad\u3093\u3067\u3069\u3093\u3069\u3093\u7406\u89e3\u3092\u6df1\u3081\u3066\u3044\u304f\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002
\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
3\u30b9\u30c6\u30c3\u30d7\u3067\u7c21\u5358! Ruby\u306e\u6587\u5b57\u5217\u3092 \u5b8c\u5168\u7406\u89e3<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2022\u5e7410\u67083\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            <\/p>\n","protected":false},"excerpt":{"rendered":"
\u3053\u3093\u306b\u3061\u306f! \u30d5\u30ea\u30fc\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u9577\u702c\u3067\u3059\u3002 \u307f\u306a\u3055\u3093\u306fjoin\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u304b\uff1f join\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u3053\u306a\u305b\u3070\u3001\u7279\u5b9a\u306e\u6587\u5b57\u3092\u631f\u3093\u3067\u914d\u5217\u3092\u9023\u7d50\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001ruby\u306ejoin\u306b\u3064\u3044\u3066 \u30fb \u6587\u5b57\u5217\u3092\u9023 […]<\/p>\n","protected":false},"author":4,"featured_media":37918,"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":[583,49,114],"class_list":["post-14743","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ruby-study","tag-join","tag-python","tag-ruby"],"acf":[],"yoast_head":"\n\u3010Ruby\u5165\u9580\u3011join\u306e\u4f7f\u3044\u65b9\u307e\u3068\u3081 (File map joins) | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0<\/title>\n<meta name=\"description\" content=\"\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c \u3010Ruby\u5165\u9580\u3011join\u306e\u4f7f\u3044\u65b9\u307e\u3068\u3081 (File map joins) \u300d\u306b\u3064\u3044\u3066\u3001\u8ab0\u3067\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u3081\u3070\u3001\u3042\u306a\u305f\u306e\u60a9\u307f\u304c\u89e3\u6c7a\u3059\u308b\u3060\u3051\u3058\u3083\u306a\u304f\u3001\u65b0\u305f\u306a\u6c17\u4ed8\u304d\u3082\u767a\u898b\u3067\u304d\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u304a\u60a9\u307f\u306e\u65b9\u306f\u305c\u3072\u3054\u4e00\u8aad\u304f\u3060\u3055\u3044\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sejuku.net\/blog\/14743\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Ruby\u5165\u9580\u3011join\u306e\u4f7f\u3044\u65b9\u307e\u3068\u3081 (File map joins) | 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content=\"https:\/\/www.facebook.com\/sejuku2013\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/sejuku2013\/\" \/>\n<meta property=\"article:published_time\" content=\"2017-01-26T09:36:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-06T02:40:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2017\/11\/ruby_join1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"700\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u7de8\u96c6\u90e8\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/samuraijuku\" \/>\n<meta name=\"twitter:site\" content=\"@samuraijuku\" \/>\n<script type=\"application\/ld+json\" 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