```
fun <T> List<T>.hasDuplicate():Boo...
# getting-startedj
josephivie
12/02/2016, 8:57 PM Copy code
fun <T> List<T>.hasDuplicate():Boolean{
val set = HashSet<T>()
return any { !set.add(it) }
}josephivie
12/02/2016, 8:57 PMfun <T> List<T>.hasDuplicate():Boolean{
val set = HashSet<T>()
return any { !set.add(it) }
}