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object Test {
val nums = Stream.from(1)
def isFizz(x: Int) = x % 3 == 0
def isBuzz(x: Int) = x % 5 == 0
// next line will run forever if withFilter isn't doing its thing.
val fizzbuzzes = for (n <- nums ; if isFizz(n) ; if isBuzz(n)) yield n
def main(args: Array[String]): Unit = {
fizzbuzzes take 5 foreach println
}
}
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