File: bug2175.scala

package info (click to toggle)
scala 2.9.2%2Bdfsg-2
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 67,252 kB
  • ctags: 6,602
  • sloc: java: 27,488; xml: 4,412; python: 2,297; sh: 734; makefile: 16; ansic: 6
file content (20 lines) | stat: -rw-r--r-- 380 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
case class Property[T](private var t: T) {
 var beforeChanges: List[(T, T) => Unit] = Nil
 var afterChanges: List[T => Unit] = Nil
 def apply = t
 def update(t2: T) = {
  beforeChanges foreach (_(t, t2))
  t = t2
  afterChanges foreach (_(t2))
 }
}

object Test
{
  def main(args: Array[String]): Unit = {
    val x = Property(10)
    x update 25
    assert(x.apply == 25)
  }
}