Swift String dropLast()

var str = "Learn swift"

// remove last character from str
print(str.dropLast())

// Output: Learn swif

dropLast() Syntax

The syntax of the string dropLast() method is:

string.dropLast(i: Int)

Here, string is an object of the String class.

dropLast() Parameter

The dropLast() method can take a single parameter:

• i (optional) - number of characters to be dropped from the end of the string

dropLast() Return Value

• returns a substring after removing the specified number of characters from the end of the string.

Example 1: Swift String dropLast()

var str = "Hello World"

// remove last character "d" from str
print(str.dropLast())  

var str1 = "Hello World "

// remove whitespace at the end of str1
print(str1.dropLast()) 

Output

Hello Worl
Hello World

In the above example, since str1 ends with whitespace, str1.dropLast() removes the whitespace from the end of str1.

Example 2: Drop Multiple Number of Characters

var str = "Hello World"
print(str.dropLast(6))

var str1 = "Learn Swift"
print(str1.dropLast(7))

Output

Hello
Lear

Here,

• str.dropLast(6) - removes the last 6 characters from str
• str1.dropLast(7) - removes the last 7 characters from str1