[Haskell] 爆速ã§ãƒ¢ãƒŠãƒ‰ã‚’ç†è§£ã™ã‚‹ä½•ç•ªç…Žã˜ã‹åˆ†ã‹ã‚Šã¾ã›ã‚“ãŒã€çˆ†é€Ÿã§ãƒ¢ãƒŠãƒ‰ã‚’説明ã—ã¾ã™ã€‚比喩ã¯ä½¿ã„ã¾ã›ã‚“。 モナドã®ã‚³ãƒ³ã‚»ãƒ—トã¯ã“ã®è¨˜äº‹ã®åŠåˆ†ã»ã©ã§èª¬æ˜Žã—終ã‚ã‚‹ã®ã§ã€æ®‹ã‚Šã¯ã‚ªãƒžã‚±ã§ã™ã€‚ ＊Maybe, State, List, IO ãªã©ã€å…·ä½“çš„ãªãƒ¢ãƒŠãƒ‰ã®ä½¿ã„æ–¹ã¯ä¸€åˆ‡èª¬æ˜Žã—ã¦ã„ã¾ã›ã‚“。 ã“ã®è¨˜äº‹ã§èª¬æ˜Žã—ã¦ã„ã‚‹ã®ã¯ã€Œãƒ¢ãƒŠãƒ‰ã¨ã¯ä½•ã‹ã€ã ã‘ã§ã™ã€‚ モナドを使ã„ã“ãªã›ã‚‹ã‚ˆã†ã«ãªã‚‹ãŸã‚ã«ã¯ã€ä»–ã®è¨˜äº‹ã‚’ã‚ãŸã£ã¦æ§˜ã€…ãªãƒ¢ãƒŠãƒ‰ã®ä½¿ã„方をã²ã¨ã¤ãšã¤è¦šãˆã¦ã„ãã»ã‹ã‚ã‚Šã¾ã›ã‚“。 関数ã®çµåˆ モナドã®èª¬æ˜Žã«å…¥ã‚‹å‰ã«ã€ã¾ãšé–¢æ•°çµåˆã®æ¼”ç®—åを定義ã—ã¾ã—ょㆠGHCi> import Data.Function(flip) GHCi> let (>.>) = flip (.) GHCi> :t (>.>) = flip (.) (>.>) :: (a -> b) -> (b -> c) -> (a -> c) GHCi> let showSqrt = s
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stylish-haskell ã®ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã«æ‰‹ã“ãšã£ãŸä»¶
Windowså‘ã‘ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã§ANSIエスケープシーケンスを使ã†ã«ã¯
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