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  1. class Lazy[A](thunk : () => A) {
  2.   lazy val body = thunk()
  3. }
  4.  
  5. object Lazy {
  6.   def lazy[A](x : => A) = new Lazy(() => x)
  7.   def force[A](x : Lazy[A]) = x.body
  8. }
  9.  
  10. object Main {
  11.   def getX() = {
  12.     println("hello")
  13.     3
  14.   }
  15.   def main(args: Array[String]) {
  16.     import Lazy._
  17.     val x = lazy(getX())
  18.     println("start")
  19.     println(x)
  20.     println(x)
  21.     println(x)
  22.   }
  23. }
Compilation error #stdin compilation error #stdout 0s 0KB
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Standard input is empty
compilation info 
Main.scala:6: error: identifier expected but 'lazy' found.
  def lazy[A](x : => A) = new Lazy(() => x)
      ^
Main.scala:17: error: illegal start of simple expression
    val x = lazy(getX())
            ^
two errors found
stdout
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Standard output is empty
https://ideone.com/ZWMNu
language:
Scala (scala 2.12.8)
created:
14 years ago
visibility:
public

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