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  1. fun Any?.foo() = println(this ?: "Sadly, this is null")
  2.  
  3. fun main(args: Array<String>) {
  4. 	val x: Int? = null
  5. 	val y: Int? = 3
  6.  
  7. 	x.foo()
  8. 	y.foo()
  9.     null.foo()
  10. }
Success #stdin #stdout 0.09s 23884KB
comments (?)
stdin 
Standard input is empty
stdout 
Sadly, this is null
3
Sadly, this is null
https://ideone.com/kCBLeH
language:
Kotlin (kotlin 1.3.21)
created:
7 years ago
visibility:
public

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