Time until the musical kills Andy :(

gistfile1.txt

scala> def step(an: Int, xn: Double): Stream[(Int, Double)] = Stream.cons((an, xn), step(an + 1, xn - (0.2 * 365)))
step: (an: Int, xn: Double)Stream[(Int, Double)]

scala> val ageNow = 28
ageNow: Int = 28

scala> val lifeExpectancy = 80
lifeExpectancy: Int = 80

scala> val marchOfTime = step(ageNow * 365, lifeExpectancy * 365)
marchOfTime: Stream[(Int, Double)] = Stream((10220,29200.0), ?)

scala> val tillDeath = marchOfTime takeWhile {x => x._1 < x._2.toInt}
tillDeath: scala.collection.immutable.Stream[(Int, Double)] = Stream((10220,29200.0), ?)

scala> tillDeath.length
res0: Int = 257