File: transpose.scala

package info (click to toggle)
scala 2.9.2%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 67,208 kB
  • sloc: java: 27,488; xml: 4,412; python: 2,297; sh: 734; makefile: 16; ansic: 6
file content (12 lines) | stat: -rw-r--r-- 422 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
 
object Test {
  def wrap[T >: Null](body: => T) = 
    try body
    catch { case _: IllegalArgumentException => null }
  
  def main(args: Array[String]): Unit = {
    assert(wrap(Nil.transpose) == Nil)
    assert(wrap(List(List(1, 2), List(1)).transpose) == null)
    assert(wrap(List(List(1), List(1, 2)).transpose) == null)
    assert(wrap(List(List(1, 2), List(1, 2)).transpose) == List(List(1, 1), List(2, 2)))
  }
}