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以åããã§æåãªBaker, Cooperâ¦ã®éæ±ºå®æ§è¨ç®ãRubyã§è§£ãã¦ã¿ã¾ãããã³ã¼ãã¯ãããªæãã§ãã #!/usr/bin/env ruby module Enumerable def distinct? table = {} each do |e| return false if table[e] table[e] = true end return true end end solve = [] [1, 2, 3, 4, 5].each do |baker| [1, 2, 3, 4, 5].each do |cooper| [1, 2, 3, 4, 5].each do |fletcher| [1, 2, 3, 4, 5].each do |miller| [1, 2, 3, 4, 5].each do |smith| next unless [baker, cooper,
http://mono.kmc.gr.jp/~oxy/w/hiki.cgi?Non%20Determinismã«ãããªã¹ãã¢ããã§éæ±ºå®æ§è¨ç®ãRubyã§Haskellã½ãè§£ãã¦ã¿ããã¨æãã¾ããåé¡ã¯ããã§ããå ã¯SICPãããã§ãã Baker, Cooper, Fletcher, Millerã¨Smithã¯äºé建ã¦ã¢ãã¼ãã®ç°ãªãéã«ä½ãã§ãããBakerã¯æä¸éã«ä½ãã®ã§ã¯ãªããCooperã¯æä¸éã«ä½ãã®ã§ã¯ãªãã Fletcherã¯æä¸éã«ãæä¸éã«ãä½ãã®ã§ã¯ãªããMillerã¯Cooperããä¸ã®éã«ä½ãã§ãããSmithã¯Fletcherã®é£ã®éã«ä½ãã®ã§ã¯ãªããFletcherã¯Cooperã®é£ã®éã«ä½ãã®ã§ã¯ãªããããããã¯ã©ã®éã«ä½ãã§ãããã Haskellã®åçã¯ãã¡ãããªã¹ãã¢ãããããããã§ãã import Control.Monad.List solve
_ é¢è¥¿ãªã¼ãã³ã½ã¼ã¹2005çºè¡¨ çºè¡¨ãã¦ããã ã¹ã©ã¤ã ã¡ãã£ã¨ä¼å ´å ¥ããé ããããããããé²è¡ããã ãã ã«ãªã£ã¦ãã¾ã£ã¦ã ç³ã訳ãªãã£ãã§ãã Tags: ximapd Rast _ éæ±ºå®æ§è¨ç® ä»åãã¡ã°ãé¢ç½ãã£ãã®ããHaskellå好ä¼ã®ã»ãã·ã§ã³ã åç°ããã®ãã¬ã¼ã³ã§éæ±ºå®æ§è¨ç®ã®è©±ãåºã¦æ¥ãã®ã ãã Wikiã§ãç´¹ä»ããã¦ããããã ã ãä»ã®è¨èªãããããªãã¨ã§ããªãã§ãããã¨ãã話ã ã£ããã å®ã¯RubyConf2005ã®Chad Fowlerã¨Jim Weirichã®ãã¥ã¼ããªã¢ã«ã§ãåããããªãã¢ããã£ã¦ããã ããã使ã£ã¦æ¸ãã¨ã require "amb" A = Amb.new baker = A.choose(1, 2, 3, 4, 5) cooper = A.choose(1, 2, 3, 4, 5) fletcher = A.choose(1,
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