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  1. object Main extends App {
  2. 	def repeat [X] (x:X, n:Int) : List[X] = {
  3.   if (n == 0) 
  4.     Nil
  5.   else 
  6.     x :: repeat (x, n - 1)
  7. }
  8.  
  9. val xs:List[(Char,Int)] = List (('a', 2), ('b', 4), ('c', 8))
  10.  
  11. val ys = xs.map ((p:(Char,Int)) => repeat (p._1, p._2))
  12.  
  13. val zs = xs.flatMap ((p:(Char,Int)) => repeat (p._1, p._2))
  14. }
Success #stdin #stdout 0.39s 322432KB
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repeat(4,5)
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Standard output is empty
https://ideone.com/QN1ca3
language:
Scala (scala 2.12.8)
created:
8 years ago
visibility:
public

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