Swift Array joined()

In this tutorial, we will learn about the Swift joined() method with the help of examples.

The joined() method returns a new string by concatenating all the elements in an array, separated by a specified separator.

Example 

var message = ["Swift", "is","fun"]


// join all elements of array with space between them
var newString = message.joined(separator:" ")


print(newString)

// Output: Swift is fun

joined() Syntax

The syntax of the joined() method is:

array.joined(separator: delimiter)

Here, array is an object of the Array class.

joined() Parameter

The joined() method takes one parameter:

  • delimiter (optional) - the separator to join the elements

Note: If we call joined() without any parameter, the elements are joined without any separator.

joined() Return Value

  • returns a string with all the array elements joined by a separator

Example: Swift joined()

var brands = ["Dell", "HP", "Apple"]


// join elements with no separator
var result1 = brands.joined()



// join elements with space between them
var result2 = brands.joined(separator:" ")



// join elements with comma between them
var result3 = brands.joined(separator:", ")


print(result1)
print(result2)
print(result3)

Output

DellHPApple
Dell HP Apple
Dell, HP, Apple

Here, we can see that the joined() method converts all the array elements into a string and separates each element by the specified separator.

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