Swift Array isEmpty

var languages = ["Swift", "C", "Java"]

// check if leanguages is empty or not
var result = languages.isEmpty

print(result)

// Output: false

isEmpty Syntax

The syntax of the array isEmpty property is:

array.isEmpty 

Here, array is an object of the Array class.

isEmpty Return Values

The isEmpty property returns:

• true - if the array does not contain any elements
• false - if the array contains some elements

Example 1: Swift Array isEmpty

var names = ["Gregory", "Perry", "Nadal"]

// check if names is empty or not
print(names.isEmpty)  

var employees = [String]()

// check if employees is empty or not
print(employees.isEmpty)

Output

false
true

In the above example, since

• names contain three string elements, the property returns false.
• employees is an empty array, the property returns true.

Example 2: Using isEmpty With if...else

var names = [String]()

// true because names is an empty array
if (names.isEmpty) {

  print( "Array is empty")
}

else {

  print("Elements:", names)
}

Output

Array is empty

Here, the names array is empty, so the if block is executed.