inforno :: Scalaã§ç„¡é™ãƒªã‚¹ãƒˆï¼šHaskellライクã«Scalaã«ã¯Streamã¨ã„ã†ç„¡é™ãƒªã‚¹ãƒˆãŒã‚ã‚‹ã‚“ã ã‘ã©ã€å¾®å¦™ã«ä½¿ã„ã¥ã‚‰ã„ã€ã¨ã„ã†ã‹åˆ†ã‹ã‚Šã¥ã‚‰ã„。Haskellã§ã„ã†cycleã¯ã©ã†ã ã€ã¨ã‹ã‚ˆã忘れるã®ã§ãƒ¡ãƒ¢ã€‚ 1def repeat[T](a:T) = Stream.const(a) 2def cycle[T](a:Iterable[T]) = Stream.const(a).flatMap(v=>v) 3def iterate[T](f:T => T, x:T):Stream[T] = Stream.cons(x, iterate(f, f(x))) 4def replicate[T](n:int, elem:T) = Stream.make(n, elem) ã“ã‚“ãªæ„Ÿã˜ã‹ãªã€‚cycleã¯çµæ§‹ä½¿ã†ã‹ã‚‰ã€Streamã«æ¨™æº–ã§ã‚ã‚Šãã†ãªæ°—ãŒã™ã‚‹ã‚“ã ã‘ã©ã€ãªã„よã†ãªã€‚ã¨ã„ã†ã‚ã‘ã§ä¸Šã®ã‚ˆã†ãªå®šç¾©ã¨ãªã‚‹ã€‚ 1repeat(1) take 10
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