GitHub - facebookincubator/retrie: Retrie is a powerful, easy-to-use codemodding tool for Haskell.You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session. Dismiss alert
chainl ã¨å·¦å†å¸° - ã‚ã©ã‘ãªã„話
Parsec ãªã©ãŒåˆ©ç”¨ã™ã‚‹å†å¸°ä¸‹é™æ§‹æ–‡è§£æžã§ã¯ã€å·¦å†å¸°ãŒç„¡é™ãƒ«ãƒ¼ãƒ—ã«é™¥ã‚‹ã¨ã„ã†å•é¡ŒãŒã‚る。例ãˆã°ã€ä»¥ä¸‹ã® BNF ã§å®šç¾©ã•ã‚Œã‚‹æ•°å¼ã‚’考ãˆã‚‹ã€‚ expr ::= expr '+' term | term term ::= term '*' factor | factor factor :: = '(' expr ')' | nat nat = '0' | '1' | ... expr 㨠term ãŒåˆ†ã‹ã‚Œã¦ã„ã‚‹ã®ã¯ã€è¶³ã—ç®—ã¨æŽ›ã‘ç®—ã®çµåˆåŠ›ã®é•ã„を表ç¾ã™ã‚‹ãŸã‚ã§ã‚る。expr 㨠term ã¯ã€å³è¾ºã®å·¦ç«¯ã«è‡ªåˆ†è‡ªèº«ãŒä½¿ã‚ã‚Œã¦ã„ã‚‹ã®ã§ã€ã“れをãã®ã¾ã¾å®Ÿè£…ã™ã‚‹ã¨ç„¡é™ãƒ«ãƒ¼ãƒ—ã«é™¥ã‚‹ã€‚ data Expr = Expr :+ Expr | Expr :* Expr | Nat Int deriving Show expr :: Parser Expr expr = do e <- expr char
I/Oストリーミングライブラリã®å®Ÿè£…ã®åŸºç¤Ž - å‰ç·¨ - Pixel Pedals of Tomakomai
conduitã‚„pipesãªã©ã®ã‚¹ãƒˆãƒªãƒ¼ãƒŸãƒ³ã‚°ãƒ©ã‚¤ãƒ–ラリã®å®Ÿè£…ã¯çµæ§‹ã‚ã‹ã‚Šã«ãã„。Pipes to Conduitsã¨ã„ã†ä¸€é€£ã®ã‚¨ãƒ³ãƒˆãƒªãŒåˆ†ã‹ã‚Šã‚„ã™ã„解説ãªã®ã ãŒã€ãã‚Œã§ã‚‚åºç›¤ã‹ã‚‰Functorã‚„Freeモナドを駆使ã—ã¦ã„ã¦ãƒãƒ¼ãƒ‰ãƒ«ãŒé«˜ã‚ãªå°è±¡ã‚’å—ã‘る。 ç†è§£ã™ã‚‹ã«ã¯è‡ªåˆ†ã§å®Ÿè£…ã™ã‚‹ã®ãŒä¸€ç•ªã®è¿‘é“ã ã‚ã†ã‹ã‚‰ã€ã“ã®ã‚¨ãƒ³ãƒˆãƒªã§ã”ãç°¡å˜ãªã‚¹ãƒˆãƒªãƒ¼ãƒŸãƒ³ã‚°ãƒ©ã‚¤ãƒ–ラリを実装ã—ã¦ã¿ã‚ˆã†ã€‚ストリーミングライブラリã§ã¯I/Oを扱ã†ã®ãŒç›®çš„ã§ã‚ã‚‹ãŸã‚ã€æœ¬æ¥ã§ã‚ã‚Œã°ãƒ¢ãƒŠãƒ‰ã‚’扱ãˆã‚‹ã‚ˆã†ã«å®Ÿè£…ã—ãªã‘ã‚Œã°æ„味ãŒãªã„ã®ã ãŒã€ã‚¹ãƒˆãƒªãƒ¼ãƒŸãƒ³ã‚°ã®åŸºæœ¬çš„ãªä»•çµ„ã¿ã¨ã—ã¦ã¯ãƒ¢ãƒŠãƒ‰ã¯é‡è¦ã§ã¯ãªã„ã®ã§ã€ã“ã“ã§ã¯ç´”粋ãªå€¤ã®ã¿ã‚’扱ã†ã‚¹ãƒˆãƒªãƒ¼ãƒ を作æˆã™ã‚‹ã€‚ ストリームを表ã™åž‹ ã“ã“ãŒä¸€ç•ªé‡è¦ã‹ã¤ã‚ã‹ã‚Šã«ãã„部分ã ã¨æ€ã‚れる。今回ã®å®Ÿè£…ã§ã¯ã€ã€Œå…¥åŠ›ã€ã€Œå‡ºåŠ›ã€ã€Œçµæžœã€ã®3ã¤ã®åž‹ã‚’ストリームã§åˆ©ç”¨ã™ã‚‹ã€‚ãŒã€ã€Œå‡ºåŠ›ã€ã¨ã€Œçµæžœã€ã®é•ã„ã¨ã¯ã„ã£ãŸã„ãªã‚“ãª
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GitHub - Frege/frege: Frege is a Haskell for the JVM. It brings purely functional programing to the Java platform.
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