Remove the first six characters from a String (Swift)

Question

What's the best way to go about removing the first six characters of a string? Through Stack Overflow, I've found a couple of ways that were supposed to be solutions but I noticed an error with them. For instance,

extension String {
func removing(charactersOf string: String) -> String {
    let characterSet = CharacterSet(charactersIn: string)
    let components = self.components(separatedBy: characterSet)
    return components.joined(separator: "")
}

If I type in a website like https://www.example.com, and store it as a variable named website, then type in the following

website.removing(charactersOf: "https://")

it removes the https:// portion but it also removes all h's, all t's, :'s, etc. from the text.

How can I just delete the first characters?

Solution 1

length is the number of characters you want to remove (6 in your case)

extension String {

  func toLengthOf(length:Int) -> String {
            if length <= 0 {
                return self
            } else if let to = self.index(self.startIndex, offsetBy: length, limitedBy: self.endIndex) {
                return self.substring(from: to)

            } else {
                return ""
            }
        }
}

Solution 2

In Swift 4 it is really simple, just use dropFirst(n: Int)

let myString = "Hello World"
myString.dropFirst(6)
//World

In your case: website.dropFirst(6)

Solution 3

Why not :

let stripped = String(website.characters.dropFirst(6))

Seems more concise and straightforward to me.

(it won't work with multi-char emojis either mind you)

[EDIT] Swift 4 made this even shorter:

let stripped = String(website.dropFirst(6))