Kotlin Array - isEmpty() Function

The Kotlin array isEmpty() function is used to check whether the array is empty. It returns true if an array is empty, otherwise, it returns false.

Syntax

Following is the syntax of Kotlin array isEmpty() function −

fun <T> Array<out T>.isEmpty(): Boolean

Parameters

This function does not accepts any parameters.

Return value

This function returns boolean value. true if an array is empty. Otherwise; false.

Example 1

Following is the basic example to demonstrate the use of isEmpty() function −

fun main(args: Array<String>) {
   val array = arrayOf<Int>()
   // check array is empty or not
   val empty = array.isEmpty()
   println("$empty")
}

Output

Following is the output −

true

Example 2

Now, let's see another example. Here, we created an array stores the strings. We then use isEmpty function to check array is empty or not −

fun main(args: Array<String>) {
   val array = arrayOf<String>("tutorialspoint", "India")
   // check array is empty or not
   val empty = array.isEmpty()
   if(empty == true){
      print("Array is empty!")
   }else{
      print("Array is not empty!")
   }
}

Output

After execution of the above code we get the following output −

Array is not empty!