{"id":2041,"date":"2013-02-13T11:56:41","date_gmt":"2013-02-13T02:56:41","guid":{"rendered":"http:\/\/www.techscore.com\/blog\/?p=2041"},"modified":"2018-11-14T16:33:56","modified_gmt":"2018-11-14T07:33:56","slug":"ruby2-0%e3%81%aerefinments%e3%81%a7%e9%81%8a%e3%82%93%e3%81%a7%e3%81%bf%e3%81%9f","status":"publish","type":"post","link":"https:\/\/www.techscore.com\/blog\/2013\/02\/13\/ruby2-0%e3%81%aerefinments%e3%81%a7%e9%81%8a%e3%82%93%e3%81%a7%e3%81%bf%e3%81%9f\/","title":{"rendered":"Ruby2.0\u306eRefinements\u3067\u904a\u3093\u3067\u307f\u305f"},"content":{"rendered":"

\u3053\u3093\u306b\u3061\u306f\u3002\u5bfa\u5ca1\u3067\u3059\u3002<\/p>\n

\u524d\u56de<\/a>\u306e\u4e88\u544a\u901a\u308a\u3001\u4eca\u56de\u306fRuby2.0\u306eRefinements\u306b\u3064\u3044\u3066\u66f8\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002
\nRuby2.0.0\u3067\u5b9f\u9a13\u7684\u6a5f\u80fd\u3068\u3057\u3066\u8ffd\u52a0\u3055\u308c\u308bRefinements\u306f\u3001\u5bfe\u8c61\u306e\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u90e8\u5206\u7684\u306b\u5909\u66f4\u3001\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n

ruby2.0.0-rc2\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h2>\n

\u307e\u305a\u306f\u5b9f\u884c\u74b0\u5883\u306e\u6e96\u5099\u3067\u3059\u3002
\nrvm\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08\u306e\u74b0\u5883\u306bRuby 2.0.0\u6700\u5f8c\u306eRC\u7248\u3067\u3042\u308bruby-2.0.0-rc2\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<\/p>\n

$ rvm get head\r\n$ rvm get latest\r\n$ rvm list known | grep '\\[ruby-\\]'\r\n[ruby-]1.8.6[-p420]\r\n[ruby-]1.8.7[-p371]\r\n[ruby-]1.9.1[-p431]\r\n[ruby-]1.9.2[-p320]\r\n[ruby-]1.9.3-p125\r\n[ruby-]1.9.3-p194\r\n[ruby-]1.9.3-p286\r\n[ruby-]1.9.3-[p327]\r\n[ruby-]1.9.3-head\r\n[ruby-]2.0.0-rc1\r\n[ruby-]2.0.0-rc2\r\n$ rvm install 2.0.0-rc2\r\n$ rvm use ruby-2.0.0-rc2\r\n$ ruby -v\r\nruby 2.0.0dev (2013-02-08 trunk 39161) [x86_64-linux]<\/pre>\n
Refinements\u3092\u4f7f\u3063\u3066\u307f\u308b<\/h2>\n
Refinements\u306e\u66f8\u5f0f\u306f\u4ee5\u4e0b\u3068\u306a\u308a\u307e\u3059<\/p>\n
# Refinements\u306e\u5b9a\u7fa9\r\nmodule Refinements\u3092\u5b9a\u7fa9\u3059\u308b\u30e2\u30b8\u30e5\u30fc\u30eb\r\n  refine \u5bfe\u8c61\u306e\u30af\u30e9\u30b9 do\r\n    def \u8ffd\u52a0\u30fb\u5909\u66f4\u3057\u305f\u3044\u30e1\u30bd\u30c3\u30c9(...)\r\n      # \u30e1\u30bd\u30c3\u30c9\u306e\u51e6\u7406\r\n    end\r\n  end\r\nend\r\n\r\n# Refinements\u306e\u5229\u7528\r\nusing Refinements\u304c\u5b9a\u7fa9\u3055\u308c\u305f\u30e2\u30b8\u30e5\u30fc\u30eb<\/pre>\n
\u7c21\u5358\u306a\u4f8b\u3068\u3057\u3066\u3001String\u30af\u30e9\u30b9\u306bhogerize\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u307f\u307e\u3059\u3002
\nrefine\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066Refinements\u3092\u5b9a\u7fa9\u3059\u308b\u3068warning\u304c\u51fa\u307e\u3059\u304c\u3001\u6c17\u306b\u305b\u305a\u306b\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
module HogerizeString\r\n  refine String do\r\n    def hogerize\r\n      self + \" hoge\"\r\n    end\r\n  end\r\nend\r\n# warning: Refinements are experimental, and the behavior may change in future versions of Ruby!\r\n\r\nfoo = \"foo\"\r\np foo.hogerize # NoMethodError: undefined method `hogerize' for \"foo\":String\r\n\r\nusing HogerizeString\r\n\r\np foo.hogerize # \"foo hoge\"<\/pre>\n
using HogerizeString\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001String\u30af\u30e9\u30b9\u306bhogerize\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n
Refinements\u3067Integer#\/\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u308b<\/h2>\n
\u4eca\u5ea6\u306f\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
ruby\u3067\u306f\u5272\u308a\u7b97\u306e\u30aa\u30da\u30e9\u30f3\u30c9\u304c\u3069\u3061\u3089\u3082\u6574\u6570\u306e\u5834\u5408\u623b\u308a\u5024\u306f\u6574\u6570\u306b\u306a\u308a\u307e\u3059\u3002
\n\u5c0f\u6570\u306e\u7d50\u679c\u3092\u5f97\u305f\u3044\u3068\u304d\u306f\u3001\u3069\u3061\u3089\u304b\u306e\u30aa\u30da\u30e9\u30f3\u30c9\u3092to_f\u3067\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u306b\u5909\u63db\u3057\u3066\u304b\u3089\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n
p 1 \/ 2 # 0\r\np 1.to_f \/ 2 # 0.5<\/pre>\n
\u3044\u3061\u3044\u3061to_f\u3059\u308b\u306e\u306f\u9762\u5012\u306a\u306e\u3067\u3001Refinements\u3092\u4f7f\u3063\u3066\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
module FloatDiv\r\n  refine Integer do\r\n    def \/(other)\r\n      to_f \/ other\r\n    end\r\n    def div(other)\r\n      to_f \/ other\r\n    end\r\n  end\r\nend\r\n\r\nusing FloatDiv\r\np 1 \/ 2 # 0<\/pre>\n
\u2026\u2026\u4e0a\u624b\u304f\u3044\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002
\nRuby\u306e\u6574\u6570\u578b\u306f\u3001\u62bd\u8c61\u30af\u30e9\u30b9Integer\u3092\u7d99\u627f\u3057\u305fFixnum\u3068Bignum\u306b\u5206\u304b\u308c\u3066\u304a\u308a\u3001
\nRefinements\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u306e\u512a\u5148\u9806\u4f4d\u306f\u30b5\u30d6\u30af\u30e9\u30b9\u3088\u308a\u3082\u4f4e\u3044\u305f\u3081\u3001Integer\u306b\u5bfe\u3057\u3066refine\u3067\u5b9a\u7fa9\u3057\u3066\u3082\u3001Fixnum\u306e\/\u30e1\u30bd\u30c3\u30c9\u304c\u547c\u3073\u51fa\u3055\u308c\u3066\u3057\u307e\u3046\u305f\u3081\u3067\u3059\u3002<\/p>\n
\u6c17\u3092\u53d6\u308a\u76f4\u3057\u3066Fixnum\u3068Bignum\u3092refine\u3059\u308b\u3088\u3046\u306b\u4fee\u6b63\u3057\u3066\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
module FloatDiv\r\n  refine Fixnum do\r\n    def \/(other)\r\n      to_f \/ other\r\n    end\r\n    def div(other)\r\n      to_f \/ other\r\n    end\r\n  end\r\n  refine Bignum do\r\n    def \/(other)\r\n      to_f \/ other\r\n    end\r\n    def div(other)\r\n      to_f \/ other\r\n    end\r\n  end\r\nend\r\n\r\np 1 \/ 2 # 0\r\n\r\nusing FloatDiv\r\n\r\np 1 \/ 2 # 0.5<\/pre>\n
\u4eca\u5ea6\u306f\u72d9\u3044\u901a\u308a\u306b\u52d5\u304d\u307e\u3057\u305f\u306d\uff01<\/p>\n
Refinements\u306e\u30b9\u30b3\u30fc\u30d7\u306b\u3064\u3044\u3066<\/h2>\n
Refinements\u3092\u5229\u7528\u3059\u308b\u305f\u3081\u306eusing\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u30b9\u30b3\u30fc\u30d7\u3067\u306e\u307f\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002
\n\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3084\u3001\u30af\u30e9\u30b9\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u5ba3\u8a00\u4e2d\u306f\u5229\u7528\u3067\u304d\u307e\u305b\u3093\u3002
\n\u307e\u305f\u3001using\u306e\u6709\u52b9\u7bc4\u56f2\u306f\u300c\u540c\u4e00\u30d5\u30a1\u30a4\u30eb\u5185\u306eusing\u4ee5\u964d\u306e\u30b3\u30fc\u30c9\u300d\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
Refinements\u306e\u30b9\u30b3\u30fc\u30d7\u5468\u308a\u306f\u306a\u304b\u306a\u304b\u8907\u96d1\u306a\u306e\u3067\u3001\u8a73\u3057\u304f\u306f\u672c\u5bb6\u306ewiki\u3092\u5fa1\u89a7\u304f\u3060\u3055\u3044\u3002
\nhttps:\/\/bugs.ruby-lang.org\/projects\/ruby-trunk\/wiki\/RefinementsSpec#Scope-of-refinements<\/a><\/p>\n
\u307e\u3068\u3081<\/h2>\n
\u4eca\u56de\u306fRefinements\u3092\u3061\u3087\u3063\u3068\u3060\u3051\u8a66\u3057\u3066\u307f\u307e\u3057\u305f\u3002
\n\u5c06\u6765\u7684\u306b\u306f\u73fe\u5728\u306e\u9759\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u5358\u4f4d\u306e\u30b9\u30b3\u30fc\u30d7\u3067\u306f\u306a\u304f\u3001\u3082\u3063\u3068\u52d5\u7684\u306a\u6a5f\u80fd\u3078\u9032\u5316\u3057\u3066\u304f\u308c\u308b\u3060\u308d\u3046\u3068\u671f\u5f85\u3057\u3066\u3044\u307e\u3059\u3002
\n\u73fe\u5728\u306fexperimental(\u5b9f\u9a13\u7684\u6a5f\u80fd)\u3068\u3057\u3066\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u672c\u756a\u306e\u30b3\u30fc\u30c9\u3067\u306f\u5229\u7528\u3059\u3079\u304d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002
\n\u3057\u304b\u3057\u3001\u7279\u5b9a\u306e\u7bc4\u56f2\u306b\u9078\u629e\u7684\u306bmixin\u3092\u5b9f\u73fe\u3059\u308b\u975e\u5e38\u306b\u5148\u9032\u7684\u306a\u6a5f\u80fd\u306a\u306e\u3067\u3001\u5c06\u6765\u306e\u305f\u3081\u306bRefinements\u306e\u8ce2\u3044\u4f7f\u3044\u9053\u3092\u7814\u7a76\u3057\u3066\u304a\u304f\u3068\u826f\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3053\u3093\u306b\u3061\u306f\u3002\u5bfa\u5ca1\u3067\u3059\u3002<\/p>\n
\u524d\u56de\u306e\u4e88\u544a\u901a\u308a\u3001\u4eca\u56de\u306fRuby2.0\u306eRefinements\u306b\u3064\u3044\u3066\u66f8\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002
\nRuby2.0.0\u3067\u5b9f\u9a13\u7684\u6a5f\u80fd\u3068\u3057\u3066\u8ffd\u52a0\u3055\u308c\u308bRefinements\u306f\u3001\u5bfe\u8c61\u306e\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u90e8\u5206\u7684\u306b\u5909\u66f4\u3001\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u6a5f\u80fd\u3067\u3059\u3002
\u7d9a\u304d\u3092\u8aad\u3080...<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[24],"_links":{"self":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts\/2041"}],"collection":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/comments?post=2041"}],"version-history":[{"count":1,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts\/2041\/revisions"}],"predecessor-version":[{"id":17956,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts\/2041\/revisions\/17956"}],"wp:attachment":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/media?parent=2041"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/categories?post=2041"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/tags?post=2041"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}