Ruby\u306e\u52c9\u5f37\u3092\u521d\u3081\u3066\u304b\u3089\u3001\u305f\u3060\u3044\u307e\u30d1\u30fc\u30d5\u30a7\u30af\u30c8Ruby\u3068\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9eRuby\u3068\u3044\u3046\u66f8\u7c4d\u3092\u4e26\u884c\u3057\u3066\u9032\u3081\u308b\u30ab\u30cb\u30d0\u30b5\u30df\u52c9\u5f37\u4e2d\u3002\u3053\u306e2\u518a\u3092\u540c\u6642\u306b\u9032\u3081\u3066\u307f\u3066\u6c17\u306b\u306a\u3063\u305f\u3068\u3053\u3084\u3089\u3092\u3042\u308c\u3053\u308c\u30c4\u30e9\u30c4\u30e9\u3068\u66f8\u3044\u3066\u307f\u308b\u30d1\u30fc\u30c84<\/p>\n
\u3067\u306f\u3067\u306f\u3002<\/p>\n
\u719f\u7df4\u5ea6\u306f\u4f4e\u3044\u3067\u3059\u304c\u57fa\u672c\u7684\u306b\u306fC\u306e\u982d\u3067\u51fa\u6765\u3066\u3044\u308b\u306e\u3067\u3001\u3053\u308c\u306b\u306f\u5c11\u3057\u9a5a\u304d\u6843\u306e\u6728\u3002<\/p>\n
irb(main):001:0> x = 1\r\n=> 1\r\nirb(main):002:0> y = 5\r\n=> 5\r\nirb(main):003:0> x, y = y, x\r\n=> [5, 1]\r\nirb(main):004:0> x\r\n=> 5\r\nirb(main):005:0> y\r\n=> 1<\/pre>\n\u00a0\u30fb\uff0a\u3092\u3064\u304b\u3048\u3070\u914d\u5217\u306e\u8981\u7d20\u3068\u3044\u3046\u4e8b\u306b\u3067\u304d\u308b<\/h2>\n
\u3044\u3064\u4f7f\u3046\u306e\u304b\u30a4\u30e1\u30fc\u30b8\u304c\u6e67\u304d\u307e\u305b\u3093\u304c\u3001\u982d\u306b\u5165\u308c\u3066\u304a\u3044\u3066\u640d\u306f\u306a\u3044\u3068\u3044\u3046\u4e88\u611f\u304c\u30d3\u30d3\u30d3\u3068\u304d\u305f\u306e\u3067\u8f09\u305b\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n
irb(main):001:0> x, *y = 1, 2, 3\r\n=> [1, 2, 3]\r\nirb(main):002:0> x\r\n=> 1\r\nirb(main):003:0> y\r\n=> [2, 3]\r\nirb(main):004:0> x, y, *z = 1, *[2, 3, 4]\r\n=> [1, 2, 3, 4]\r\nirb(main):005:0> x\r\n=> 1\r\nirb(main):006:0> y\r\n=> 2\r\nirb(main):007:0> z\r\n=> [3, 4]<\/pre>\n\u00a0\u30fb\u30c9\u30fb\u30e2\u30eb\u30ac\u30f3\u3063\u3066\u3053\u3093\u306a\u306e\u3060\u3063\u3051\u2026<\/h2>\n
\u516c\u5f0f\u306a\u3093\u3066\u6b63\u76f4\u899a\u3048\u3066\u306a\u3044\u3067\u3059\u304c\u5185\u5bb9\u306f\u5f53\u305f\u3063\u3066\u307e\u3059\u3063\u3066\u8a00\u3044\u65b9\u3092\u3059\u308b\u306e\u306f\u304a\u304b\u3057\u3044\u3051\u308c\u3069w
\n\u5f53\u305f\u3063\u3066\u307e\u3059\u3002<\/p>\nirb(main):068:0> if !(a > 1 && a > 4) then p 'hoge' end\r\n"hoge"\r\n=> "hoge"\r\nirb(main):069:0> if !(a > 1) || !(a > 4) then p 'hoge' end\r\n"hoge"\r\n=> "hoge"\r\n\r\nirb(main):072:0> if !(a > 1 || a > 4) then p 'hoge' end\r\n=> nil\r\nirb(main):073:0> if !(a > 1) && !(a > 4) then p 'hoge' end\r\n=> nil<\/pre>\n\u00a0\u30fb\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u7279\u5fb4<\/h2>\n
\u25cf\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3067\u304d\u306a\u3044
\n\u5fd8\u5099\u9332\u7684\u306a\u610f\u5473\u3067\u66f8\u3044\u3066\u304a\u3053\u3046\u3002\u3044\u3064\u4f7f\u3046\u306e\u304b\u308f\u304b\u3089\u3093\u3051\u3069\u3002
\n\u25cf\u7d99\u627f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u3002
\n\u30af\u30e9\u30b9\u3068\u9055\u3063\u3066\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u7d99\u627f\u3067\u304d\u306a\u3044\u3068\u3044\u3046\u4e8b\u3060\u306d\u3002<\/p>\n\u30fb\u30e2\u30b8\u30e5\u30fc\u30eb\u95a2\u6570\u306e\u547c\u3073\u65b9<\/h2>\n
\u25cf\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u30ec\u30b7\u30fc\u30d0\u306b\u3057\u3066\u547c\u3073\u51fa\u3059\u3002\u3053\u3053\u3067\u306fMath\u3092\u547c\u3093\u3067\u307e\u3059\u3002<\/p>\n
irb(main):005:0> Math.sqrt(2)\r\n=> 1.4142135623730951<\/pre>\n\u25cfInclude\u3059\u308b\u3002\u3053\u3053\u3067\u306fMath\u3092\u547c\u3093\u3067\u307e\u3059\u3002<\/p>\n
irb(main):008:0> include Math\r\n=> Object\r\nirb(main):009:0> sqrt(2)\r\n=> 1.4142135623730951<\/pre>\n\u30fbautoload\u306f\u6307\u5b9a\u3057\u305f\u30e2\u30b8\u30e5\u30fc\u30eb\u3001\u30af\u30e9\u30b9\u304c\u6700\u521d\u306b\u53c2\u7167\u3055\u308c\u305f\u6642\u306b\u81ea\u52d5\u7684\u306brequire\u3055\u308c\u308b\u3002<\/h2>\n
\u540d\u524d\u304b\u3089\u3059\u308b\u3068\u30d7\u30ed\u30b0\u30e9\u30e0\u5b9f\u884c\u6642\u306bload\u3055\u308c\u305d\u3046\u306a\u3001\u540d\u524d\u306e\u5370\u8c61\u304b\u3089\u3057\u3066\u52b9\u679c\u3092\u9593\u9055\u3048\u305d\u3046\u306a\u306e\u3060\u3051\u308c\u3069\u3001\u5b9f\u884c\u6642\u306bload\u3059\u308b\u306e\u3063\u3066require\u3084\u3093\uff1f\u3068\u51b7\u9759\u306b\u8003\u3048\u308c\u3070\u3069\u3046\u3068\u3044\u3046\u3053\u3068\u306f\u306a\u3044\u3002\u3063\u3066\u304b\u3002<\/p>\n
\u30fb\u30af\u30e9\u30b9\u306f<\/h2>\n
\u30af\u30e9\u30b9\u306f\u3060\u3044\u305f\u3044Object\u30af\u30e9\u30b9\u304b\u3089\u6d3e\u751f\u3057\u305f\u30b5\u30d6\u30af\u30e9\u30b9\u3002\u5b9a\u7fa9\u3057\u305f\u30af\u30e9\u30b9\u3082\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u306a\u304b\u3063\u305f\u5834\u5408\u306f\u3001\u81ea\u52d5\u7684\u306bObject\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3059\u308b\u3002<\/p>\n
\r\nirb(main):025:0* hoge = 'a'\r\n=> "a"\r\nirb(main):026:0> hoge.class\r\n=> String\r\nirb(main):027:0> hoge.class.superclass\r\n=> Object\r\n\r\nirb(main):028:0> hoge = 1\r\n=> 1\r\nirb(main):029:0> hoge.class\r\n=> Fixnum\r\nirb(main):030:0> hoge.class.superclass\r\n=> Integer\r\nirb(main):031:0> hoge.class.superclass.superclass\r\n=> Numeric\r\nirb(main):032:0> hoge.class.superclass.superclass.superclass\r\n=> Object\r\n\r\nirb(main):002:0> Array.class.superclass\r\n=> Module\r\nirb(main):003:0> Array.class.superclass.superclass\r\n=> Object\r\n\r\nirb(main):010:0> Range.class.superclass.superclass\r\n=> Object\r\n\r\nirb(main):012:0* SyntaxError.superclass.superclass\r\n=> Exception\r\nirb(main):013:0> SyntaxError.superclass.superclass.superclass\r\n=> Object\r\n\r\nirb(main):001:0> class Hoge\r\nirb(main):002:1> end\r\n=> nil\r\nirb(main):003:0> Hoge.superclass\r\n=> Object\r\n<\/pre>\n\u30fb\u30ad\u30fc\u30ef\u30fc\u30c9\u30ea\u30c6\u30e9\u30eb<\/h2>\n
irb(main):001:0> nil\r\n=> nil\r\nirb(main):002:0> true\r\n=> true\r\nirb(main):003:0> false\r\n=> false\r\nirb(main):004:0> self\r\n=> main\r\nirb(main):006:0> __FILE__\r\n=> "(irb)"\r\nirb(main):007:0> __LINE__\r\n=> 7\r\nirb(main):008:0> __ENCODING__\r\n=> #<Encoding:UTF-8> <\/pre>\n\u00a0\u30fb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u201d\u30dd\u30a4\u30f3\u30bf\u306e\u3088\u3046\u306a\u3082\u306e\u201d\u3089\u3057\u3044\u3051\u308c\u3069<\/h2>\n
\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u3064\u3044\u3066\u7406\u89e3\u3067\u304d\u3066\u3044\u306a\u3044\u72b6\u614b\u3060\u3068\u8aac\u660e\u6587\u3092\u8aad\u3093\u3060\u3089\u305d\u306e\u307e\u3093\u307e\u3001\u201d\u30dd\u30a4\u30f3\u30bf\u306e\u3088\u3046\u306a\u3082\u306e<\/strong>\u201d\u3068\u3057\u304b\u89e3\u91c8\u304c\u3067\u304d\u306b\u3083\u3044\u306a\u3042\u3002
\n\u300c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u53c2\u7167<\/strong>\u300d\u3068\u3044\u3046\u5358\u5143\u306e\u8aac\u660e\u3082\u3042\u3063\u305f\u3051\u308c\u3069\u3001\u3053\u306e\u7d50\u679c\u3092\u898b\u305f\u65b9\u304c\u5206\u304b\u308a\u3084\u3059\u3044\u6c17\u304c\u3057\u307e\u3059\u3002\u305f\u3060\u3001\u3053\u308c\u3092\u898b\u308b\u3068\u201d\u30dd\u30a4\u30f3\u30bf\u306e\u3088\u3046\u306a\u3082\u306e<\/strong>\u201d\u3068\u3044\u3046\u304b\u3001\u201d\u3053\u308c\u306f\u30dd\u30a4\u30f3\u30bf\u3060<\/strong>\u201d\u3068\u601d\u3063\u3061\u307e\u3046\u306e\u3060\u3088\u306d\u3002\u30dd\u30a4\u30f3\u30bf\u306e\u3053\u3068\u3092\u3069\u308c\u3060\u3051\u7406\u89e3\u3057\u3066\u3044\u308b\u306e\u304b\u306f\u7f6e\u3044\u3068\u3044\u3066\u3060\u3002<\/p>\nirb(main):001:0> a\u00a0 = "Ruby"\r\n=> "Ruby"\r\nirb(main):002:0> b = c = "Ruby"\r\n=> "Ruby"\r\nirb(main):003:0> a.equal?(b)\r\n=> false\r\nirb(main):004:0> b.equal?(c)\r\n=> true\r\nirb(main):008:0> a == b\r\n=> true<\/pre>\n\u00a0\u30fb0.0\/0.0 \u306f\u6570\u5b57\u3067\u306f\u306a\u3044\u3051\u308c\u3069<\/h2>\n
\u6570\u5b57\u3068\u307f\u306a\u3059\u3068 0 \u3060\u306e\u306a<\/strong>\u3002<\/p>\n
irb(main):003:0> num = 0.0\/0.0\r\n=> NaN\r\nirb(main):004:0> num\r\n=> NaN\r\nirb(main):006:0> a.to_i\r\n=> 0\r\nirb(main):010:0> a.to_f\r\n=> 0.0<\/pre>\n\u30fb\u4f8b\u5916\u51e6\u7406\u304c\u521d\u898b\u3067\u306f\u5206\u304b\u308a\u306b\u304f\u3044\u305c<\/h2>\n
\u305d\u306e\u307e\u3093\u307e\u3002\u4f7f\u3063\u3066\u307f\u306a\u3044\u3068\u5206\u304b\u308a\u306b\u304f\u3044\u3002<\/p>\n
#!\/home\/takeken\/.rbenv\/shims\/ruby\r\n\r\nbegin\r\n\u00a0 file = File.open('hoge.txt')\r\nrescue\r\n\u00a0 puts 'File\u304c\u307f\u3064\u304b\u308a\u307e\u305b\u306c'\r\nensure\r\n\u00a0 file.close if file\r\nend<\/pre>\n\u00a0\u30fb\u4f8b\u5916\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3042\u308c\u3053\u308c<\/h2>\n
\u304a\u624b\u8efd\u3060\u3002\u4eca\u306e\u3068\u3053\u308d\u4f8b\u5916\u3092\u6d3b\u304b\u3057\u305f\u3082\u306e\u304c\u66f8\u3051\u3066\u3044\u306a\u3044\u306e\u3067\u4f7f\u308f\u306a\u3044\u3068\u3060\u3002<\/p>\n
\r\ne.class\r\n[takeken@localhost]$ .\/hoge.rb\r\nError occurred (Errno::ENOENT)\r\ne.message\r\n[takeken@localhost]$ .\/hoge.rb\r\nError occurred (No such file or directory @ rb_sysopen - hoge.txt)\r\ne.backtrace\r\n[takeken@localhost]$ .\/hoge.rb\r\nError occurred ([".\/hoge.rb:4:in `initialize'", ".\/hoge.rb:4:in `open'", ".\/hoge.rb:4:in `<main>'"])\r\n<\/pre>\n\u00a0\u30fb\u30ec\u30b7\u30fc\u30d0\u30fb\u5f15\u6570\u306a\u3057\u3067\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3068\u304d\u306f\u30ab\u30c3\u30b3\u3092\u7701\u7565\u3067\u304d\u306a\u3044<\/h2>\n
\u305d\u306e\u307e\u307e\u306e\u610f\u5473\u3067\u3059\u3002<\/p>\n
\u30fb\u30d6\u30ed\u30c3\u30af\u3068\u3057\u3066\u6e21\u3059<\/h2>\n
\u3053\u3046\u3044\u3046\u66f8\u304d\u65b9\u3082\u3067\u304d\u308b\u307f\u305f\u3044\u3067\u3001\u3053\u306e\u8fba\u306f\u3042\u3093\u307e\u308a\u6839\u8a70\u3081\u3066\u3084\u3063\u3061\u3083\u3046\u3068\u304a\u3044\u3089\u306e\u982d\u3060\u3068\u30d1\u30cb\u30c3\u30af\u3057\u305d\u3046\u3060\u304b\u3089\u3001\u3060\u3044\u305f\u3044\u3067\u6d41\u3057\u3066\u304a\u3053\u3046\u3068\u601d\u3046\u3002<\/p>\n
#!\/home\/takeken\/.rbenv\/shims\/ruby\r\n\r\npeople = %w(Alice Bob Charlie)\r\nblock = Proc.new do |name|\r\n\u00a0 puts name\r\nend\r\npeople.each &block\r\n\r\n[takeken@localhost]$ .\/hoge.rb\r\nAlice\r\nBob\r\nCharlie<\/pre>\n\u00a0\u30fbRequire\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9\u306fLOADED_FEATURES\u3068\u3044\u3046\u5909\u6570\u306b\u8ffd\u52a0\u3055\u308c\u308b<\/h2>\n
\u8abf\u3079\u3066\u307f\u305f\u3002\u306a\u308b\u307b\u3069\u3002<\/p>\n
irb(main):001:0> x = p $LOADED_FEATURES\r\n\r\nirb(main):002:0> p x.last(1)\r\n["\/home\/takeken\/.rbenv\/versions\/2.1.5\/lib\/ruby\/2.1.0\/rubygems\/dependency.rb"]\r\n=> ["\/home\/takeken\/.rbenv\/versions\/2.1.5\/lib\/ruby\/2.1.0\/rubygems\/dependency.rb"]\r\n\r\nirb(main):003:0> require 'json'\r\n=> true\r\nirb(main):004:0> p x.last(1)\r\n["\/home\/takeken\/.rbenv\/versions\/2.1.5\/lib\/ruby\/2.1.0\/json.rb"]\r\n=> ["\/home\/takeken\/.rbenv\/versions\/2.1.5\/lib\/ruby\/2.1.0\/json.rb"]<\/pre>\n\u00a0\u30fb\u6570\u5024\u3058\u3083\u306a\u3044\uff1f<\/h2>\n
to_i \u3067\u6570\u5024\u5316\u3057\u306a\u3044\u3068\u3001\u6570\u5024\u3092\u5165\u308c\u3088\u3046\u304c\u3001zero? \u305d\u3093\u306a\u30e1\u30bd\u30c3\u30c9\u77e5\u3089\u3093\u3068\u8a00\u308f\u308c\u308b\u3002\u4ed6\u306b\u3082to_i \u306a\u3069\u306a\u3069\u8272\u3005\u3068\u3042\u308b\u3002
\n<\/span><\/p>\n\r\n#!\/home\/takeken\/.rbenv\/shims\/ruby\r\n# coding: utf-8\r\n\r\nn = ARGV[0].to_i\r\n\r\nif n.zero?\r\nputs '\uff10\u3067\u3057\u305f'\r\nelsif n.even?\r\nputs '\u5076\u6570\u3067\u3059'\r\nelsif n.odd?\r\nputs '\u5947\u6570\u3067\u3059'\r\nend\r\n<\/pre>\n\u7406\u7531\u306f\u3053\u308c\uff08\u3068\u601d\u3046\uff09<\/p>\n
irb(main):001:0> ARGV[0].class\r\n=> NilClass\r\nirb(main):002:0> 1.class\r\n=> Fixnum\r\nirb(main):003:0> ARGV[0].to_i.class\r\n=> Fixnum<\/pre>\n\u00a0\u30fb\u3053\u3093\u306a\u611f\u3058\u3067\u3082\u30a6\u30b4\u30af<\/h2>\n
\u4f55\u3068\u306a\u304f\u3001\u3053\u308c\u3067\u52d5\u304f\u3093\u3060\u3063\u3066\u601d\u3063\u305f\u306e\u3067\u767b\u9332\u3002
\n\u307e\u3060\u307e\u3060\u6163\u308c\u3066\u306a\u3044\u611f\u3058\u304c\u3042\u308a\u3042\u308a\u3002
\n\u4e45\u3057\u3076\u308a\u306bPython\u3092\u898b\u3066\u3001\u9589\u3058\u306a\u3044\u3093\u3060\uff01\u3063\u3066\u601d\u3046\u304f\u3089\u3044\u99b4\u67d3\u3093\u3067\u306a\u3044\u3002<\/p>\n#!\/home\/takeken\/.rbenv\/shims\/ruby\r\n# coding: utf-8\r\n\r\nclass Hoge\r\n\u00a0def moge\r\n\u00a0 yoge = 'roge'\r\n\r\n\u00a0\u00a0 \u00a0case yoge\r\n\u00a0\u00a0 \u00a0 when 'roge' then\r\n\u00a0\u00a0 \u00a0 'Yes!'\r\n\u00a0\u00a0 \u00a0 when 'woge' then\r\n\u00a0\u00a0 \u00a0 'no'\r\n\u00a0\u00a0 \u00a0 end\r\n\u00a0end\r\nend\r\n\r\nyou = Hoge.new\r\n\r\np you.moge\r\n[takeken@localhost ~]$ ruby test.rb\r\n"Yes!"<\/pre>\n\u00a0\u30fb\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306e\u6271\u3044\u306fC\u8a00\u8a9e\u306e\u6642\u3068\u540c\u3058\u611f\u3058\u3060\u3051\u308c\u3069<\/h2>\n
\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u3068\u304b\u306a\u304f\u3066\u30af\u30e9\u30b9\u306f\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u307e\u3068\u3081\u3066require\u3059\u308b\u306e\u304cRuby\u2026\u3000\u3068\u601d\u3046\u3002
\n\u3067\u3082Ruby\u3092\u3084\u308a\u3060\u3057\u3066Jquery\u304c\u307e\u3060\u898b\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002<\/p>\n[takeken@localhost ~]$ ruby test.rb\r\na\r\nAlice\r\nBob\r\nCarol\r\n"Carol"\r\n""\r\n\r\n[takeken@localhost ~]$ cat test.rb\r\n#!\/home\/takeken\/.rbenv\/shims\/ruby\r\n# coding: utf-8\r\n\r\nname = ''\r\n\r\nclass Hoge\r\n\r\n\u00a0\u00a0 \u00a0def tage\r\n\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0for name in %w(a Alice Bob Carol)\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0puts name\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0end\r\n\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0p name\r\n\u00a0\u00a0 \u00a0end\r\nend\r\n\r\nhoge = Hoge.new()\r\n\r\nhoge.tage\r\n\r\np name<\/pre>\n\u4e0a\u3068\u4e0b\u306f\u540c\u3058\u3067\u3059\u3002
\n\u5206\u3051\u3066\u66f8\u3044\u3066\u307f\u308b\u3068\u5909\u6570\u304c\u3069\u3046\u306a\u3063\u3066\u3044\u308b\u304b\u5206\u304b\u308a\u3084\u3059\u3044\u306e\u304b\u306a\u3002<\/p>\n[takeken@localhost ~]$ ruby test.rb\r\na\r\nAlice\r\nBob\r\nCarol\r\n"Carol"\r\n""\r\n[takeken@localhost ~]$ cat test.rb\r\n#!\/home\/takeken\/.rbenv\/shims\/ruby\r\n# coding: utf-8\r\n\r\nrequire '.\/hoge.rb'\r\n\r\nname = ''\r\n\r\nhoge = Hoge.new()\r\n\r\nhoge.tage\r\n\r\np name\r\n[takeken@localhost ~]$ cat hoge.rb\r\n#!\/home\/takeken\/.rbenv\/shims\/ruby\r\n# coding: utf-8\r\n\r\nclass Hoge\r\n\r\n\u00a0\u00a0\u00a0 def moge\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 languages = %w(Perl Python Ruby)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 i=0 \r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 while i < languages.length\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 puts "Hello, #{languages[i]}."\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 i += 1\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 end\r\n\u00a0\u00a0\u00a0 end \r\n\r\n\u00a0\u00a0\u00a0 def tage\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 for name in %w(a Alice Bob Carol)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 puts name\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 end \r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 p name\r\n\u00a0\u00a0\u00a0 end\r\nend<\/pre>\n\u00a0\u30fbBEGIN\u306e\u6271\u3044\u3002<\/h2>\n
\u6700\u521d\u306b\u8aad\u307f\u8fbc\u3080BEGIN\u3002\u5b9f\u884c\u7d50\u679c\u3092\u898b\u3066\u307f\u308b\u3068!!\u304c\u51fa\u3066\u3044\u306a\u3044\u306e\u304c\u308f\u304b\u308b\u3002
\nBEGIN\u306b\u3044\u3063\u305f\u5f8c\u306f\u307e\u305f\u4e0a\u304b\u3089\u3060\u3063\u3066\u306e\u304c\u5206\u304b\u308a\u3084\u3059\u3044\u3068\u601d\u3063\u305f\u30b9\u30af\u30ea\u30d7\u30c8\u3002<\/p>\n\r\n\r\n#!\/home\/takeken\/.rbenv\/shims\/ruby\r\n# coding: utf-8\r\n\r\nprint " and "\r\n\r\nEND {\r\nprint "!!\\n"\r\n}\r\n\r\nprint "World\\n"\r\n\r\nexit!\r\n\r\nBEGIN {\r\nprint "Hello"\r\n}\r\n\r\nexit!\r\n[takeken@localhost ~]$ ruby hoge.rb\r\nHello and World\r\n\r\n<\/pre>\n\u00a0\u30fb\u3053\u3093\u306a\u306e\u3082\u3042\u308a\u3067\u30aa\u30e2\u30ed\u30a4\u3002<\/h2>\n
C\u306ePrintf\u306e\u8a18\u8ff0\u5f0f\u304c\u4f7f\u3048\u308b\u3002<\/p>\n
irb(main):002:0> printf("%.10f\\n", Math.sqrt(2))\r\n1.4142135624\r\n=> nil<\/pre>\n\u00a0\u30fb\u30a8\u30f3\u30b3\u30fc\u30c9\u306b\u3082\u8272\u3005\u3042\u308b\u3089\u3057\u3044<\/h2>\n
\u30d5\u30a1\u30a4\u30eb\u3058\u305f\u3044\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u3082\u3042\u308a\u3001\u8272\u3005\u3068\u5965\u304c\u6df1\u3044\u3002<\/p>\n
p Encoding.default_external #\u30c7\u30d5\u30a9\u30eb\u30c8\u5916\u90e8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\r\np Encoding.default_internal #\u30c7\u30d5\u30a9\u30eb\u30c8\u5185\u90e8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\r\np Encoding.locale_charmap #\u73fe\u5728\u306e\u30ed\u30b1\u30fc\u30eb<\/pre>\n<\/p>\n
\u3053\u308c\u3067\u5c11\u3057\u306f\u307e\u3068\u307e\u3063\u305f\u60c5\u5831\u306b\u306a\u3063\u305f\u304b\u306a\u3002
\n\u305f\u307e\u30fc\u306b\u898b\u76f4\u3059\u3068\u304d\u3060\u3063\u305f\u308a\u306b\u307e\u305f\u898b\u8fd4\u305b\u308b\u3068\u3044\u3044\u306a\u3002<\/p>\n