Clojure 1.3 ã®ãƒ‘フォーマンスã«é©šã„ãŸè©±Clojureã®ä»Šã«ã‚ˆã‚‹ã¨ã€ Clojure 1.3 ã‹ã‚‰ãƒ—リミティブ型ã«ã‚ˆã‚‹åž‹æ³¨é‡ˆãŒå¯èƒ½ã«ãªã£ãŸã‚ˆã†ã§ã™ã€‚プリミティブ åž‹ã«ã‚ˆã‚‹åž‹æ³¨é‡ˆã¯ã€æœ€é©åŒ–ã«ãŠã„ã¦æœ€ã‚‚é‡è¦ãªæƒ…å ±ã®ä¸€ã¤ã§ã™ã‹ã‚‰ã€å½“然ãªãŒ らãã®çµæžœã¨ã—ã¦ã€ãƒ—リミティブãªæ¼”ç®—ã‚’ä¼´ã†å‡¦ç†ã®é«˜é€ŸåŒ–ãŒæœŸå¾…ã§ãã‚‹ã‚ã‘ ã§ã™ã€‚スライドã§ã¯ã€ä»¥ä¸‹ã® fib 関数を例ã«ã¨ã£ã¦ã€åž‹æ³¨é‡ˆã‚’与ãˆãŸå ´åˆã¨ 与ãˆãªã‹ã£ãŸå ´åˆã¨ã§ã€ã©ã‚Œã ã‘実行速度ãŒé•ã†ã‹ã‚’示ã—ã¦ã„ã¾ã™ã€‚ ;; 型注釈ãªã— (defn fib [n] (if (<= n 1) 1 (+ (fib (dec n)) (fib (- n 2))))) (time (fib 38)) ;=> Elapsed time: 4100.272 msecs ;; 型注釈ã‚ã‚Š (defn fib ^long [^long n] (if (<= n 1) 1 (+ (fib (dec n)) (fib (- n
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Persistent Trees in git, Clojure and CouchDB « EclipseSource Blog
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