How much they've made so far, with scala: scala> def income(n_users:Int) = (...

wooby on July 14, 2009 | parent | context | favorite | on: Pinboard - antisocial bookmarking

How much they've made so far, with scala:

  scala> def income(n_users:Int) = (1 to n_users) map(i => (i-1)*.001) reduceLeft(_+_)
 income: (Int)Double

  scala> income(2901)
 res0: Double = 4206.45

swolchok on July 14, 2009 [–]

You need to round the intermediate values down like they seem to be doing.