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May 24th, 2018
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Kotlin 0.11 KB | None | 0 0
  1. val a = listOf("A", "B")
  2. val b = listOf("C", "D")
  3.  
  4. println(
  5. a.flatMap { x -> b.map{
  6.     y -> x+y
  7. } }
  8. )
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