Swift String remove() Function

String remove() Function

The remove() method of the String structure is used to remove specified characters from the given position. For example, we have a string "My Car", now we use the remove(at: 1) method to remove the character present at index 1. So the final answer is

Syntax

Following is the syntax of the remove() method −

func remove(at x: String.Index)-> Character

Parameters

This function takes only one parameter which is x. Here x represents the position of the character that we want to remove. The value of x must be a valid index of the string.

Return Value

This method returns the removed character.

Example 1

Swift program to demonstrate how to use the remove() method −

import Foundation

// Declaring a string
var str = "Swift"

print("Original String:", str)

// Removing character from the string
// Using remove(at:) function
if let res = str.firstIndex(of: "w"){
   str.remove(at: res)
}

print("Modified String:", str)

Output

Original String: Swift
Modified String: Sift

Example 2

Swift program to remove a character from the given string −

var str = "Welcome Swift"
print("Original string: \(str)")

// Define the index of the character "c" to remove
let index = str.index(str.startIndex, offsetBy: 3)

// Check if the index is within the given bounds
if index < str.endIndex {

Using the remove(at) function to remove the character at the specified index
str.remove(at: index)
   print("Updated String: \(str)")
} else {
   print("Invalid index.")
}

Output

Original string: Welcome Swift
Updated String: Welome Swift