{"id":26,"date":"2022-12-28T14:49:35","date_gmt":"2023-03-25T12:38:05","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/ruby%e3%82%92%e6%8e%a2%e7%b4%a2%e3%81%99%e3%82%8b%e3%81%9f%e3%82%81%e3%81%abirb%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2025-07-31T10:53:59","modified_gmt":"2025-07-31T01:53:59","slug":"ruby%e3%82%92%e6%8e%a2%e7%b4%a2%e3%81%99%e3%82%8b%e3%81%9f%e3%82%81%e3%81%abirb%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/ruby%e3%82%92%e6%8e%a2%e7%b4%a2%e3%81%99%e3%82%8b%e3%81%9f%e3%82%81%e3%81%abirb%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"Ruby\u3092\u63a2\u7d22\u3059\u308b\u305f\u3081\u306bIRB\u3092\u4f7f\u7528\u306e\u65b9\u6cd5"},"content":{"rendered":"

\u4ee5\u4e0b\u306e\u6587\u7ae0\u3092\u65e5\u672c\u8a9e\u3067\u81ea\u7136\u306b\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002\uff11\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u69cb\u3044\u307e\u305b\u3093\u3002<\/h3>\n

– Introduction<\/p>\n

\u30a4\u30f3\u30c8\u30ed\u30c0\u30af\u30b7\u30e7\u30f3<\/p>\n

IRB\uff08\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u30fb\u30eb\u30d3\u30fc\uff09\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u306a\u304f\u3001Ruby\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3092\u63a2\u7d22\u3057\u3001\u30b3\u30fc\u30c9\u3092\u8a66\u3059\u305f\u3081\u306e\u8fc5\u901f\u306a\u65b9\u6cd5\u3067\u3059\u3002IRB\u306f\u3001\u591a\u304f\u306e\u8fd1\u4ee3\u7684\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u3001Read-Eval-Print Loop\uff08REPL\uff09\u3068\u3044\u3046\u30c4\u30fc\u30eb\u3067\u3059\u3002\u4f7f\u7528\u3059\u308b\u306b\u306f\u3001irb\u306e\u5b9f\u884c\u53ef\u80fd\u30d5\u30a1\u30a4\u30eb\u3092\u8d77\u52d5\u3057\u3001\u30d7\u30ed\u30f3\u30d7\u30c8\u3067Ruby\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002IRB\u306f\u3001\u5165\u529b\u3057\u305f\u30b3\u30fc\u30c9\u3092\u8a55\u4fa1\u3057\u3001\u7d50\u679c\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n

IRB\u306f\u3001Ruby\u306e\u7d44\u307f\u8fbc\u307f\u6a5f\u80fd\u3060\u3051\u3067\u306a\u304f\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u3084gem\u306b\u3082\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u3001IRB\u3092\u8a2d\u5b9a\u3057\u3066\u30b3\u30de\u30f3\u30c9\u5c65\u6b74\u3092\u4fdd\u5b58\u3057\u305f\u308a\u3001\u30b3\u30fc\u30c9\u306e\u81ea\u52d5\u88dc\u5b8c\u3092\u6709\u52b9\u306b\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001IRB\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3001\u51fa\u529b\u3092\u78ba\u8a8d\u3057\u3001\u5916\u90e8\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u53d6\u308a\u8fbc\u3093\u3067IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u307e\u3059\u3002<\/p>\n

IRB\u306e\u958b\u59cb\u3068\u505c\u6b62<\/h2>\n

\u3082\u3057Ruby\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308c\u3070\u3001IRB\u3092\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002Ruby\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305f\u4efb\u610f\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3067\u3001\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304b\u3089irb\u3068\u3044\u3046\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001IRB\u3092\u8d77\u52d5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

<\/code><\/pre>\n
    \n
  1. irb<\/li>\n<\/ol>\n
    <\/code><\/pre>\n
     <\/p>\n
    <\/code><\/pre>\n
    IRB\u30d7\u30ed\u30f3\u30d7\u30c8\u3067\u304a\u51fa\u8fce\u3048\u3055\u308c\u307e\u3059:<\/p>\n
    <\/code><\/pre>\n
    IRB session<\/div>\n
    <\/code><\/pre>\n
    irb(main):001:0><\/p>\n
    <\/code><\/pre>\n
    \u3053\u308c\u306f\u3001IRB\u3092\u5b9f\u884c\u3057\u3066\u304a\u308a\u3001\u5b9f\u884c\u3057\u305f\u3082\u306e\u306fRuby\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u6700\u4e0a\u4f4d\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u3042\u308b\u30e1\u30a4\u30f3\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u5b9f\u884c\u3055\u308c\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u884c\u756a\u53f7\u3082\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
    \n
    Note<\/p>\n
    \u6ce8\u610f\uff1a\u3082\u3057RVM\u3067Ruby\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u30d7\u30ed\u30f3\u30d7\u30c8\u306f\u82e5\u5e72\u7570\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u304c\u8868\u793a\u3055\u308c\u308b\u4ee3\u308f\u308a\u306b\u3001
    \nRVM2.4.0\u304b\u3089\u306eIRB\u30bb\u30c3\u30b7\u30e7\u30f3:001><\/div>\n
    \u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u5168\u4f53\u3067\u8868\u793a\u3055\u308c\u308b\u30d7\u30ed\u30f3\u30d7\u30c8\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u306f\u3001irb –prompt inf-ruby\u3067IRB\u3092\u8d77\u52d5\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div>\n
    IRB\u306fRuby\u306e\u69cb\u6587\u3092\u53d7\u3051\u5165\u308c\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u30d7\u30ed\u30f3\u30d7\u30c8\u306b\u5165\u529b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u30022\u3064\u306e\u6570\u5b57\u3092\u8db3\u3057\u3066\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
    <\/code><\/pre>\n
      \n
    1. 2<\/span> + 2<\/span><\/li>\n<\/ol>\n
      <\/code><\/pre>\n
       <\/p>\n
      <\/code><\/pre>\n
      \u30a8\u30f3\u30bf\u30fc\u30ad\u30fc\u3092\u62bc\u3059\u3068\u3001IRB\u304c\u7d50\u679c\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n
      <\/code><\/pre>\n
      IRB session<\/div>\n
      <\/code><\/pre>\n
      => 4<\/p>\n
      <\/code><\/pre>\n
      \u300c= >\u300d\u8a18\u53f7\u306f\u3001\u3053\u308c\u304cRuby\u5f0f\u304b\u3089\u306e\u8fd4\u308a\u5024\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
      IRB\u3092\u7d42\u4e86\u3059\u308b\u306b\u306f\u3001\u30d7\u30ed\u30f3\u30d7\u30c8\u3067\u300cexit\u300d\u3068\u5165\u529b\u3059\u308b\u304b\u3001CTRL+D\u3092\u62bc\u3057\u307e\u3059\u3002\u305d\u3046\u3059\u308b\u3068\u3001\u30b7\u30a7\u30eb\u306e\u30d7\u30ed\u30f3\u30d7\u30c8\u306b\u623b\u308a\u307e\u3059\u3002<\/p>\n
      IRB\u3092\u8a73\u3057\u304f\u6398\u308a\u4e0b\u3052\u3066\u3001\u30b3\u30fc\u30c9\u3092\u63a2\u7d22\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
      IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b<\/h2>\n
      IRB\u306f\u3001\u3042\u306a\u305f\u306e\u554f\u984c\u306b\u5bfe\u3059\u308b\u826f\u3044\u89e3\u6c7a\u7b56\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u7d20\u6674\u3089\u3057\u3044\u65b9\u6cd5\u3067\u3059\u3002Ruby\u3067\u306f\u307b\u3068\u3093\u3069\u3059\u3079\u3066\u304c\u5024\u3092\u8fd4\u3057\u3001IRB\u3067\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u5b9f\u884c\u3059\u308b\u305f\u3073\u306b\u3001\u305d\u306e\u8fd4\u308a\u5024\u304c\u753b\u9762\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
      \u3053\u308c\u3092\u5b9f\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001\u65b0\u3057\u3044IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u3053\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
      <\/code><\/pre>\n
        \n
      1. puts “Hello World”<\/span><\/li>\n<\/ol>\n
        <\/code><\/pre>\n
         <\/p>\n
        <\/code><\/pre>\n
        \u30a8\u30f3\u30bf\u30fc\u30ad\u30fc\u3092\u62bc\u3059\u3068\u3001IRB\u304b\u30892\u3064\u306e\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
        <\/code><\/pre>\n
        OUTPUT<\/div>\n
        <\/code><\/pre>\n
        Hello World => nil<\/p>\n
        <\/code><\/pre>\n
        \u6700\u521d\u306e\u7d50\u679c\u306fputs\u30e1\u30bd\u30c3\u30c9\u306e\u51fa\u529b\u3067\u3042\u308a\u3001\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u3092\u6539\u884c\u3057\u305f\u3082\u306e\u3067\u3059\u3002puts\u30e1\u30bd\u30c3\u30c9\u306f\u30c6\u30ad\u30b9\u30c8\u3092\u6a19\u6e96\u51fa\u529b\u30c7\u30d0\u30a4\u30b9\u3067\u3042\u308b\u753b\u9762\u306b\u8868\u793a\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001puts\u30e1\u30bd\u30c3\u30c9\u306b\u306f\u623b\u308a\u5024\u304c\u3042\u308a\u307e\u3059\u3002\u3068\u3044\u3046\u306e\u3082\u3001Ruby\u306e\u3059\u3079\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u306b\u306f\u623b\u308a\u5024\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002puts\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u306fnil\u3067\u3042\u308a\u3001\u305d\u308c\u304cIRB\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
        \u4e00\u3064\u306e\u547d\u4ee4\u3092\u5b9f\u884c\u3059\u308b\u305f\u3073\u306b\u3001\u30d7\u30ed\u30f3\u30d7\u30c8\u304c\u5909\u308f\u308a\u3001\u65b0\u3057\u3044\u884c\u756a\u53f7\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
        irb(main):001:0> puts \"Hello World\"\r\nHello World\r\n=> nil\r\nirb(main):002:0>\r\n<\/code><\/pre>\n
        IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u8907\u96d1\u306a\u5f0f\u3092\u51e6\u7406\u3059\u308b\u969b\u306b\u3001\u3053\u306e\u6a5f\u80fd\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u884c\u756a\u53f7\u3092\u53c2\u7167\u3059\u308b\u305f\u3081\u3001\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u30c7\u30d0\u30c3\u30b0\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
        \u3042\u306a\u305f\u306f\u3001\u72ec\u7acb\u3057\u305fRuby\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u3088\u3046\u306b\u3001IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u5909\u6570\u306b\u5024\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u5165\u529b\u3057\u3066ENTER\u30ad\u30fc\u3092\u62bc\u3057\u3066\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
        <\/code><\/pre>\n
          \n
        1. birth_year =<\/span> 1868<\/span><\/li>\n<\/ol>\n
          <\/code><\/pre>\n
           <\/p>\n
          <\/code><\/pre>\n
          \u3053\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u623b\u308a\u5024\u304c\u30a8\u30b3\u30fc\u3055\u308c\u3066\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
          <\/code><\/pre>\n
          IRB session<\/div>\n
          <\/code><\/pre>\n
          => 1868<\/p>\n
          <\/code><\/pre>\n
          \u5909\u6570birth_year\u306b\u306f\u3053\u306e\u5024\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001Ruby\u306e\u307b\u3068\u3093\u3069\u306e\u6587\u306f\u5024\u3092\u8fd4\u3059\u305f\u3081\u3001IRB\u3067\u306f\u3053\u3053\u3067\u3082\u8fd4\u308a\u5024\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
          2\u3064\u306e\u5909\u6570\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6700\u521d\u306b\u3001death_year\u3068\u3044\u3046\u5909\u6570\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
          <\/code><\/pre>\n
            \n
          1. death_year =<\/span> 1921<\/span><\/li>\n<\/ol>\n
            <\/code><\/pre>\n
             <\/p>\n
            <\/code><\/pre>\n
            \u305d\u308c\u3067\u306f\u3001\u51fa\u751f\u5e74\u304b\u3089\u6b7b\u4ea1\u5e74\u3092\u5f15\u3044\u3066\u5909\u6570\u300cage_at_death\u300d\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
            <\/code><\/pre>\n
              \n
            1. age_at_death =<\/span> death_year – birth_year<\/li>\n<\/ol>\n
              <\/code><\/pre>\n
               <\/p>\n
              <\/code><\/pre>\n
              IRB\u306f\u5909\u6570\u306b\u5024\u3092\u5272\u308a\u5f53\u3066\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u7d50\u679c\u3082\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n
              <\/code><\/pre>\n
              IRB session<\/div>\n
              <\/code><\/pre>\n
              => 53<\/p>\n
              <\/code><\/pre>\n
              IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u3044\u308b\u5834\u5408\u3001\u660e\u793a\u7684\u306aputs\u3084print\u6587\u3092\u4f7f\u308f\u306a\u304f\u3066\u3082\u304b\u307e\u3044\u307e\u305b\u3093\u3002\u306a\u305c\u306a\u3089\u3001\u8fd4\u308a\u5024\u304c\u8868\u793a\u3055\u308c\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n
              \u6642\u306b\u306f\u8907\u6570\u884c\u306b\u308f\u305f\u308b\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u305f\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002IRB\u306f\u3053\u308c\u3092\u76f4\u611f\u7684\u306b\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002IRB\u306f\u69cb\u6587\u7684\u306b\u5b8c\u5168\u306a\u30b3\u30fc\u30c9\u306e\u307f\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306eRuby\u30b3\u30fc\u30c9\u306f\u3001\u30cd\u30fc\u30e0\u306b\u6587\u5b57 “a” \u3092\u542b\u3080\u30cd\u30b3\u30b6\u30e1\u3060\u3051\u3092\u9078\u629e\u3057\u3066\u8fd4\u3059\u305f\u3081\u306b\u3001\u30cd\u30b3\u30b6\u30e1\u306e\u914d\u5217\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30b3\u30fc\u30c9\u3092IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u5165\u529b\u3057\u3001\u5404\u884c\u306e\u5f8c\u306bENTER\u30ad\u30fc\u3092\u62bc\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
              [<\/span>\"Tiger\"<\/span><\/span>,<\/span> \"Great White\"<\/span><\/span>,<\/span> \"Angel\"<\/span><\/span>]<\/span>.<\/span>select do<\/span> |<\/span>shark|<\/span>\r\nshark.<\/span>include<\/span>?<\/span>(<\/span>\"a\"<\/span><\/span>)<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
              IRB\u306f\u8907\u6570\u884c\u306e\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u30b3\u30fc\u30c9\u304c\u69cb\u6587\u7684\u306b\u5b8c\u5168\u3067\u3042\u308b\u3068\u5224\u65ad\u3055\u308c\u305f\u5834\u5408\u306b\u306e\u307f\u3001\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002IRB\u306f\u3001\u30b3\u30fc\u30c9\u306e\u8a55\u4fa1\u304c\u307e\u3060\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u793a\u3059\u305f\u3081\u306b\u30a2\u30b9\u30bf\u30ea\u30b9\u30af\uff08*\uff09\u3092\u4f7f\u7528\u3057\u3001\u7570\u306a\u308b\u30b9\u30b3\u30fc\u30d7\u3092\u793a\u3059\u305f\u3081\u306b\u6700\u5f8c\u306e\u30bc\u30ed\u30921\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30f3\u30d7\u30c8\u304c\u5909\u5316\u3059\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
              <\/code><\/pre>\n
              IRB session<\/div>\n
              <\/code><\/pre>\n
              irb(main):005:0> [“Tiger”, “Great White”, “Angel”].select do |shark| irb(main):006:1*<\/mark> shark.include?(“a”) irb(main):007:1<\/mark>> end<\/p>\n
              <\/code><\/pre>\n
              \u6700\u521d\u306e\u884c\u306bdo\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u305f\u3081\u3001IRB\u306fend\u30ad\u30fc\u30ef\u30fc\u30c9\u306b\u906d\u9047\u3059\u308b\u307e\u3067\u4f55\u3082\u5b9f\u884c\u3057\u307e\u305b\u3093\u3002\u305d\u306e\u5f8c\u3001\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
              <\/code><\/pre>\n
              IRB session<\/div>\n
              <\/code><\/pre>\n
              => [“Great White”]<\/p>\n
              <\/code><\/pre>\n
              IRB\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u81ea\u5206\u81ea\u8eab\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u53d6\u308a\u5165\u308c\u308b\u524d\u306b\u3001\u30b3\u30fc\u30c9\u306e\u4e00\u90e8\u3092\u30c6\u30b9\u30c8\u3057\u3066\u52d5\u4f5c\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u5916\u90e8\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u4e00\u7dd2\u306b\u4f7f\u7528\u3059\u308b\u305f\u3081\u306b\u3082IRB\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
              \u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u30b8\u30a7\u30e0\u3092\u4f7f\u7528\u3059\u308b<\/h2>\n
              IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u5185\u3067\u3001Ruby\u30d7\u30ed\u30b0\u30e9\u30e0\u3068\u540c\u69d8\u306brequire\u6587\u3092\u4f7f\u3063\u3066\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u306f\u3001Ruby\u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u542b\u307e\u308c\u308b\u3082\u306e\u3001\u81ea\u5206\u81ea\u8eab\u3067\u4f5c\u6210\u3057\u305f\u3082\u306e\u3001\u307e\u305f\u306fRubygems.org\u3092\u901a\u3058\u3066\u914d\u5e03\u3055\u308c\u308bgem\uff08Ruby\u30e9\u30a4\u30d6\u30e9\u30ea\uff09\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n
              Ruby\u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u306f\u3001Web\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u4f5c\u6210\u3057\u7d50\u679c\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u3001Ruby\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u884c\u3046\u306e\u3068\u540c\u3058\u3088\u3046\u306b\u3001IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u3082\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
              Ruby\u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u304b\u3089Net\/HTTP\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306brequire\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u5165\u529b\u3057\u3001ENTER\u3092\u62bc\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
              require<\/span> 'net\/http'<\/span><\/span>\r\n<\/code><\/pre>\n
              IRB\u306f\u3001\u3053\u306e\u6587\u304c\u771f\u3092\u8fd4\u3059\u3053\u3068\u3092\u793a\u3057\u3066\u304a\u308a\u3001\u3053\u308c\u306f\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6b63\u5e38\u306a\u8aad\u307f\u8fbc\u307f\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u4eca\u3001icanhazip.com\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3057\u3066\u5916\u90e8IP\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u3001\u3053\u306e\u30b3\u30fc\u30c9\u3092IRB\u306b\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
              uri =<\/span> URI<\/span>.<\/span>parse(<\/span>\"http:\/\/icanhazip.com\"<\/span><\/span>)<\/span>\r\nresponse =<\/span> Net::<\/span>HTTP<\/span>.<\/span>get_response uri\r\nresponse.<\/span>body\r\n<\/code><\/pre>\n
              \u5404\u884c\u3092\u5165\u529b\u3059\u308b\u305f\u3073\u306b\u3001IRB\u306f\u623b\u308a\u5024\u3092\u8868\u793a\u3057\u3066\u304f\u308c\u308b\u306e\u3067\u3001\u5404\u30b9\u30c6\u30c3\u30d7\u3092\u30c7\u30d0\u30c3\u30b0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
              <\/code><\/pre>\n
              IRB session<\/div>\n
              <\/code><\/pre>\n
              irb(main):010:0> uri = URI.parse(“http:\/\/icanhazip.com”) => #<URI::HTTP http:\/\/icanhazip.com><\/mark> irb(main):011:0> response = Net::HTTP.get_response uri => #<Net::HTTPOK 200 OK readbody=true><\/mark> irb(main):012:0> response.body => 203.0.113.52\\n<\/mark><\/p>\n
              <\/code><\/pre>\n
              \u3082\u3057\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u898b\u3064\u304b\u3089\u306a\u304b\u3063\u305f\u5834\u5408\u3001\u7570\u306a\u308b\u5fdc\u7b54\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u51e6\u7406\u3092\u5c11\u3057\u7c21\u5358\u306b\u3059\u308bHTTParty\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
              require<\/span> 'httparty'<\/span><\/span>\r\n<\/code><\/pre>\n
              \u3053\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
              <\/code><\/pre>\n
              IRB session<\/div>\n
              <\/code><\/pre>\n
              LoadError: cannot load such file — httparty<\/p>\n
              <\/code><\/pre>\n
              \u3053\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001\u304a\u63a2\u3057\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u5229\u7528\u3067\u304d\u306a\u3044\u3053\u3068\u3092\u4f1d\u3048\u3066\u3044\u307e\u3059\u3002HTTParty\u306fgem\u3068\u3057\u3066\u914d\u5e03\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3092CTRL+D\u3067\u7d42\u4e86\u3059\u308b\u304b\u3001exit\u3068\u5165\u529b\u3057\u3066\u30d7\u30ed\u30f3\u30d7\u30c8\u306b\u623b\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u3057\u3066\u3001gem\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3057\u3066httparty\u306egem\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
              <\/code><\/pre>\n
                \n
              1. gem install<\/span> httparty<\/li>\n<\/ol>\n
                <\/code><\/pre>\n
                 <\/p>\n
                <\/code><\/pre>\n
                \u4eca\u3059\u3050irb\u3092\u518d\u5ea6\u8d77\u52d5\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                <\/code><\/pre>\n
                  \n
                1. irb<\/li>\n<\/ol>\n
                  <\/code><\/pre>\n
                   <\/p>\n
                  <\/code><\/pre>\n
                  \u518d\u3073\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3067\u307f\u3066\u304f\u3060\u3055\u3044\u3002IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u3001\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                  require<\/span> 'httparty`\r\n<\/code><\/pre>\n
                  \u4eca\u56de\u306f\u3001IRB\u304ctrue\u3092\u8868\u793a\u3057\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30ed\u30fc\u30c9\u3067\u304d\u305f\u3053\u3068\u304c\u5206\u304b\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002IRB\u306b\u3053\u306e\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3057\u3066\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                  response =<\/span> HTTParty.<\/span>get(<\/span>\"http:\/\/icanhazip.com\"<\/span><\/span>)<\/span>\r\nresponse.<\/span>body\r\n<\/code><\/pre>\n
                  \u753b\u9762\u306b\u51fa\u529b\u3055\u308c\u305f\u7d50\u679c\u3092\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 (Gamen ni shutsuryoku sareta kekka o miru koto ga dekimasu.)<\/p>\n
                  <\/code><\/pre>\n
                  IRB session<\/div>\n
                  <\/code><\/pre>\n
                  => 203.0.113.52\\n<\/mark><\/p>\n
                  <\/code><\/pre>\n
                  \u3067\u306f\u3001IRB\u3092\u4f7f\u3063\u3066\u81ea\u5206\u81ea\u8eab\u306eRuby\u30b3\u30fc\u30c9\u3092\u63a2\u7d22\u3057\u30c6\u30b9\u30c8\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
                  IRB\u306b\u81ea\u5206\u306e\u30b3\u30fc\u30c9\u3092\u8aad\u307f\u8fbc\u3080<\/h2>\n
                  IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u958b\u59cb\u3057\u3001-r\u30b9\u30a4\u30c3\u30c1\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001IRB\u304c\u8d77\u52d5\u3059\u308b\u969b\u306b\u30ed\u30fc\u30c9\u3059\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3084\u30b8\u30a7\u30e0\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001irb -r httparty\u306e\u3088\u3046\u306b\u3059\u308b\u3068\u3001httparty\u30b8\u30a7\u30e0\u304c\u3059\u3067\u306b\u30ed\u30fc\u30c9\u3055\u308c\u305f\u72b6\u614b\u3067IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u304c\u8d77\u52d5\u3057\u307e\u3059\u306e\u3067\u3001\u660e\u793a\u7684\u306arequire httparty\u6587\u3092\u7701\u7565\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                  \u305f\u3060\u3057\u3001\u81ea\u5206\u81ea\u8eab\u306e\u30b3\u30fc\u30c9\u3092\u65b0\u3057\u3044\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u8aad\u307f\u8fbc\u3080\u305f\u3081\u306b\u3082\u3053\u308c\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u305d\u308c\u3092\u63a2\u7d22\u3057\u305f\u308a\u30c6\u30b9\u30c8\u3057\u305f\u3044\u3068\u304d\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n
                  IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u7d42\u4e86\u3055\u305b\u308b\u306b\u306f\u3001exit\u3068\u5165\u529b\u3059\u308b\u304b\u3001CTRL+D\u3092\u62bc\u3057\u3066\u7d42\u4e86\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                  ip_grabber.rb\u3068\u3044\u3046\u65b0\u3057\u3044Ruby\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3001\u305d\u308c\u306b\u306fURL\u3092\u63d0\u4f9b\u3059\u308b\u3068\u30de\u30b7\u30f3\u306e\u5916\u90e8IP\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3059get\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064IPGrabber\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002icanhazip.com\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306bHTTParty\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u81ea\u5206\u81ea\u8eab\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3053\u306eIPGrabber\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5916\u90e8\u306e\u5909\u66f4\u304b\u3089\u30b3\u30fc\u30c9\u3092\u4fdd\u8b77\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u57fa\u306b\u306a\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3084IP\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u30b5\u30a4\u30c8\u3092\u5909\u66f4\u3059\u308b\u969b\u306b\u3001\u4ed6\u306e\u30b3\u30fc\u30c9\u306e\u52d5\u4f5c\u3092\u5909\u3048\u305a\u306b\u6e08\u3080\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
                  \u3053\u306e\u30b3\u30fc\u30c9\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u8ffd\u52a0\u3057\u3066\u3001\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                  \u30a2\u30a4\u30d4\u30fc\u30b0\u30e9\u30d0\u30fc.rb<\/div>\n
                  require<\/span> 'httparty'<\/span><\/span>\r\nclass<\/span> IPGrabber<\/span>\r\n\r\ndef<\/span> initialize<\/span><\/span>(<\/span>)<\/span>\r\n@url<\/span> =<\/span> \"http:\/\/icanhazip.com\"<\/span><\/span>\r\nend<\/span>\r\n\r\ndef<\/span> get<\/span><\/span>\r\nresponse =<\/span> HTTParty.<\/span>get(<\/span>@url<\/span>)<\/span>\r\nresponse.<\/span>body.<\/span>chomp # remove the \\n if it exists<\/span>\r\nend<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
                  \u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3057\u3066\u3001\u30a8\u30c7\u30a3\u30bf\u3092\u7d42\u4e86\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                  IRB\u3092\u8d77\u52d5\u3057\u3066\u3001\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u30ed\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306f\u3001\u30b8\u30a7\u30e0\u3084\u7d44\u307f\u8fbc\u307f\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u306f\u306a\u304f\u3001\u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb\u306a\u306e\u3067\u3001\u30d1\u30b9\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u62e1\u5f35\u5b50\u300c.rb\u300d\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u3082\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
                  <\/code><\/pre>\n
                    \n
                  1. irb -r<\/span> .\/ip_grabber<\/li>\n<\/ol>\n
                    <\/code><\/pre>\n
                     <\/p>\n
                    <\/code><\/pre>\n
                    IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u304c\u30ed\u30fc\u30c9\u3055\u308c\u3001\u3053\u306e\u65b0\u3057\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n
                    ip =<\/span> IPGrabber<\/span>.<\/span>new<\/span>\r\nip.<\/span>get\r\n<\/code><\/pre>\n
                    \u3053\u306e\u51fa\u529b\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
                    <\/code><\/pre>\n
                    IRB session<\/div>\n
                    <\/code><\/pre>\n
                    => 203.0.113.52<\/mark><\/p>\n
                    <\/code><\/pre>\n
                    \u81ea\u5206\u81ea\u8eab\u306e\u30b3\u30fc\u30c9\u3092IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u8aad\u307f\u8fbc\u3080\u3053\u3068\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u5168\u4f53\u306b\u7d44\u307f\u8fbc\u3080\u524d\u306b\u30b3\u30fc\u30c9\u3092\u691c\u67fb\u3057\u3001\u81ea\u5206\u81ea\u8eab\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u4f5c\u696d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                    IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u30b3\u30fc\u30c9\u3092\u6271\u3046\u65b9\u6cd5\u3092\u5b66\u3093\u3060\u306e\u3067\u3001IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
                    IRB\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba<\/h2>\n
                    IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u305f\u3081\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u308b.irbrc\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u81ea\u52d5\u88dc\u5b8c\u3001\u30a4\u30f3\u30c7\u30f3\u30c8\u3001\u30b3\u30de\u30f3\u30c9\u5c65\u6b74\u306b\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                    \u3042\u306a\u305f\u306e\u30db\u30fc\u30e0\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                    <\/code><\/pre>\n
                      \n
                    1. nano<\/span> ~\/.irbrc<\/li>\n<\/ol>\n
                      <\/code><\/pre>\n
                       <\/p>\n
                      <\/code><\/pre>\n
                      \u6700\u521d\u306b\u3001IRB\u3067\u81ea\u52d5\u88dc\u5b8c\u30b5\u30dd\u30fc\u30c8\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001TAB\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3001\u5909\u6570\u540d\u3001\u304a\u3088\u3073\u30e1\u30bd\u30c3\u30c9\u540d\u3092IRB\u3067\u81ea\u52d5\u88dc\u5b8c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                      \n
                      \u4ee5\u4e0b\u306f\u65e5\u672c\u8a9e\u306b\u81ea\u7136\u306a\u8a00\u3044\u63db\u3048\u3092\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305f\u3060\u3057\u3001\u4e00\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3060\u3051\u3067\u69cb\u3044\u307e\u305b\u3093\u3002<\/p>\n
                      \u300c~\/.irbrc\u300d<\/p>\n<\/div>\n
                      require<\/span> 'irb\/completion'<\/span><\/span>\r\n<\/code><\/pre>\n
                      \u6b21\u306b\u3001\u30b3\u30de\u30f3\u30c9\u5c65\u6b74\u3092\u5916\u90e8\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\u3059\u308b\u30b5\u30dd\u30fc\u30c8\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                      \u4ee5\u4e0b\u306e\u3082\u306e\u3092\u65e5\u672c\u8a9e\u3067\u81ea\u7136\u306b\u518d\u8868\u73fe\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30aa\u30d7\u30b7\u30e7\u30f3\u306f1\u3064\u3060\u3051\u3067\u3059\uff1a\u300c~\/.irbrc\u300d<\/div>\n
                      IRB<\/span>.<\/span>conf[<\/span>:SAVE_HISTORY<\/span>]<\/span> =<\/span> 1000<\/span>\r\n<\/code><\/pre>\n
                      \u3053\u306e\u8a2d\u5b9a\u3092\u6709\u52b9\u306b\u3059\u308b\u3068\u3001\u5165\u529b\u3057\u305f\u6700\u5f8c\u306e1000\u4ef6\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u30db\u30fc\u30e0\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e.irb_history\u30d5\u30a1\u30a4\u30eb\u306b\u8a18\u9332\u3055\u308c\u307e\u3059\u3002<\/p>\n
                      \u307e\u305f\u3001\u65b0\u3057\u3044IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u958b\u304f\u969b\u306b\u306f\u3001\u5c65\u6b74\u304c\u81ea\u52d5\u7684\u306b\u8aad\u307f\u8fbc\u307e\u308c\u3001\u4e0a\u4e0b\u77e2\u5370\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3066\u30a8\u30f3\u30c8\u30ea\u30fc\u9593\u3092\u79fb\u52d5\u3057\u305f\u308a\u3001Bash\u30b7\u30a7\u30eb\u3067\u884c\u3046\u306e\u3068\u540c\u69d8\u306b\u3001\u9006\u691c\u7d22\u3092\u884c\u3046\u305f\u3081\u306bCTRL+R\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                      \u3082\u3057\u5225\u306e\u5c65\u6b74\u30d5\u30a1\u30a4\u30eb\u3092\u6307\u5b9a\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306b\u3053\u308c\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                      \uff5e\/ .irbrc\u3092\u65e5\u672c\u8a9e\u3067\u7c21\u6f54\u306a\u8a00\u8449\u306b\u7f6e\u63db\u3059\u308b\u3002<\/div>\n
                      IRB<\/span>.<\/span>conf[<\/span>:HISTORY_FILE<\/span>]<\/span> =<\/span> '~\/your_history_filename<\/mark>'<\/span><\/span>\r\n<\/code><\/pre>\n
                      \u6b21\u306b\u3001\u30af\u30e9\u30b9\u3001\u30e1\u30bd\u30c3\u30c9\u3001\u304a\u3088\u3073\u30d6\u30ed\u30c3\u30af\u3092\u8a18\u8ff0\u3059\u308b\u969b\u306b\u4fbf\u5229\u306a\u81ea\u52d5\u30a4\u30f3\u30c7\u30f3\u30c8\u6a5f\u80fd\u3092\u6709\u52b9\u306b\u3059\u308b\u305f\u3081\u3001\u3053\u306e\u884c\u3092\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306b\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                      \u4ee5\u4e0b\u306e\u6587\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\u306f\u4e00\u3064\u3060\u3051\u5fc5\u8981\uff09:
                      \n~\/.irbrc=> \u30c9\u30c3\u30c8\u30a2\u30a4\u30a2\u30fc\u30eb\u30d3\u30fc\u30a2\u30fc\u30eb\u30b7\u30fc<\/p>\n<\/div>\n
                      IRB<\/span>.<\/span>conf[<\/span>:AUTO_INDENT<\/span>]<\/span> =<\/span> true<\/span>\r\n<\/code><\/pre>\n
                      \u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306b\u306f\u3001\u8ffd\u52a0\u306e\u6709\u52b9\u306aRuby\u30b3\u30fc\u30c9\u3092\u542b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30d8\u30eb\u30d1\u30fc\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u305f\u308a\u3001\u8ffd\u52a0\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30ed\u30fc\u30c9\u3059\u308b\u305f\u3081\u306brequire\u3092\u4f7f\u7528\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u5c65\u6b74\u30d8\u30eb\u30d1\u30fc\u3092\u8ffd\u52a0\u3059\u308b\u5834\u5408\u306f\u3001.irbrc\u306b\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                      \n
                      .irbrc\u3092\u65e5\u672c\u8a9e\u3067\u30ca\u30a4\u30c6\u30a3\u30d6\u306b\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u30021\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u307f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n
                      .irbrc\u3092\u8a00\u3044\u63db\u3048<\/p>\n<\/div>\n
                      def<\/span> history<\/span><\/span>\r\nhistory_array =<\/span> Readline::<\/span>HISTORY<\/span>.<\/span>to_a\r\nprint history_array.<\/span>join(<\/span>\"\\n\"<\/span><\/span>)<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
                      IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u30ed\u30fc\u30c9\u3059\u308b\u969b\u306f\u3001\u5c65\u6b74\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306bhistory\u3068\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5c65\u6b74\u306f\u304b\u306a\u308a\u306e\u91cf\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u5c65\u6b74\u30b3\u30de\u30f3\u30c9\u3092\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u884c\u6570\u3067\u8868\u793a\u3059\u308b\u3088\u3046\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002history\u95a2\u6570\u306e\u30b3\u30fc\u30c9\u3092\u6b21\u306e\u30b3\u30fc\u30c9\u306b\u7f6e\u304d\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u306e\u30b3\u30fc\u30c9\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u5f15\u6570\u3067\u3042\u308bcount\u3092\u53d7\u3051\u53d6\u308a\u3001\u8868\u793a\u3059\u308b\u30a8\u30f3\u30c8\u30ea\u3092\u5236\u9650\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n
                      \n
                      .irbrc\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
                      \u300c\u30a2\u30a4\u30a2\u30fc\u30eb\u30d3\u30fc\u30a2\u30fc\u30eb\u30b7\u30fc\u300d<\/p>\n<\/div>\n
                      \r\n# history command<\/span>\r\ndef<\/span> history<\/span><\/span>(<\/span>count =<\/span> 0<\/span>)<\/span>\r\n\r\n# Get history into an array<\/span>\r\nhistory_array =<\/span> Readline::<\/span>HISTORY<\/span>.<\/span>to_a\r\n\r\n# if count is > 0 we'll use it.<\/span>\r\n# otherwise set it to 0<\/span>\r\ncount =<\/span> count ><\/span> 0<\/span> ?<\/span> count :<\/span> 0<\/span>\r\n\r\nif<\/span> count ><\/span> 0<\/span>\r\nfrom =<\/span> history_array.<\/span>length -<\/span> count\r\nhistory_array =<\/span> history_array[<\/span>from..<\/span>-<\/span>1<\/span>]<\/span>\r\nend<\/span>\r\n\r\nprint history_array.<\/span>join(<\/span>\"\\n\"<\/span><\/span>)<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
                      \u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3057\u3001\u65b0\u3057\u3044IRB\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u958b\u59cb\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001”history 2″\u3068\u5165\u529b\u3059\u308b\u3068\u3001\u904e\u53bb\u306e\u5c65\u6b74\u306e\u6700\u5f8c\u306e2\u884c\u3060\u3051\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
                      .irbrc\u3092\u4f7f\u7528\u3057\u3066\u983b\u7e41\u306b\u4f7f\u7528\u3059\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8aad\u307f\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u8aad\u307f\u8fbc\u3080\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u5897\u3048\u308b\u305f\u3073\u306bIRB\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u8aad\u307f\u8fbc\u307f\u6642\u9593\u304c\u5897\u52a0\u3057\u3001\u4f7f\u7528\u3059\u308b\u969b\u306b\u4e0d\u5feb\u306b\u611f\u3058\u308b\u3053\u3068\u3082\u899a\u3048\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002\u901a\u5e38\u306f\u3001require\u6587\u3092\u4f7f\u3063\u3066\u7279\u5b9a\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u624b\u52d5\u3067\u8aad\u307f\u8fbc\u3080\u65b9\u304c\u826f\u3044\u7d50\u679c\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n
                      \u7d50\u8ad6<\/h2>\n
                      IRB\u306fRuby\u30b3\u30fc\u30c9\u3092\u5b9f\u9a13\u3059\u308b\u5834\u6240\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u306f\u30d5\u30a1\u30a4\u30eb\u306b\u5165\u308c\u308b\u524d\u306b\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8ad6\u7406\u3092\u78ba\u8a8d\u3059\u308b\u7d20\u6674\u3089\u3057\u3044\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
                      \u3042\u306a\u305f\u304cIRB\u306b\u6163\u308c\u3066\u304d\u305f\u306e\u3067\u3001\u3053\u308c\u3089\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306b\u5f93\u3063\u3066\u3001IRB\u3092\u4f7f\u7528\u3057\u3066Ruby\u306e\u3055\u307e\u3056\u307e\u306a\u30c7\u30fc\u30bf\u578b\u3092\u63a2\u7d22\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306bIRB\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                        \n
                      • Understanding Data Types in Ruby<\/li>\n
                      • How To Work with Strings in Ruby<\/li>\n
                      • How To Work with String Methods in Ruby<\/li>\n
                      • How To Work with Arrays in Ruby<\/li>\n
                      • How To Use Array Methods in Ruby<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
                        \u4ee5\u4e0b\u306e\u6587\u7ae0\u3092\u65e5\u672c\u8a9e\u3067\u81ea\u7136\u306b\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002\uff11\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u69cb\u3044\u307e\u305b\u3093\u3002 – Introduction \u30a4\u30f3\u30c8\u30ed\u30c0\u30af\u30b7\u30e7\u30f3 IRB\uff08\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u30fb\u30eb\u30d3\u30fc\uff09\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u306a\u304f\u3001Ruby\u30d7\u30ed\u30b0 […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-26","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\nRuby\u3092\u63a2\u7d22\u3059\u308b\u305f\u3081\u306bIRB\u3092\u4f7f\u7528\u306e\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Ruby\u3092\u63a2\u7d22\u3059\u308b\u305f\u3081\u306bIRB\u3092\u4f7f\u7528\u306e\u65b9\u6cd5\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\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.silicloud.com\/ja\/blog\/ruby\u3092\u63a2\u7d22\u3059\u308b\u305f\u3081\u306birb\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ruby\u3092\u63a2\u7d22\u3059\u308b\u305f\u3081\u306bIRB\u3092\u4f7f\u7528\u306e\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"Ruby\u3092\u63a2\u7d22\u3059\u308b\u305f\u3081\u306bIRB\u3092\u4f7f\u7528\u306e\u65b9\u6cd5\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/ruby\u3092\u63a2\u7d22\u3059\u308b\u305f\u3081\u306birb\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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