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ykarikos/gist:7831661

Created December 6, 2013 20:34
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Scala stuff
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gistfile1.scala
// Detect primes naively
def prime(x: Int): Option[Int] = if ((2 until x).forall(x % _ != 0)) Some(x) else None
def primeRatio(x: Int): Double = (x - (1 until x).map(prime).count(_ == None)).toDouble/x
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