Swift Replace Multiple Characters in String

Question

Below is the following line of code I use to replace an HTML break tag with a carriage return. However, I have other HTML symbols that I need to replace and when I call this line of code again, with different parameters, it's as if the first one is overwritten. Is there a way I can include multiple parameters? Is there a more efficient way to do this in Swift? For example: replace both br> with "" and nbsp with "".

textView.text = content.stringByReplacingOccurrencesOfString("<br /><br />", withString:"\r")

Answer 1

Use replacingOccurrences along with a the String.CompareOptions.regularExpresion option.

Example (Swift 3):

var x = "<Hello, [play^ground+]>"
let y = x.replacingOccurrences(of: "[\\[\\]^+<>]", with: "7", options: .regularExpression, range: nil)
print(y)

Input characters which are to be replaced inside the square brackets like so [\\ Characters]

Output:

7Hello, 7play7ground777

Answer 2

I solved it based on the idea of Rosetta Code

extension String {
    func stringByRemovingAll(characters: [Character]) -> String {
        return String(self.characters.filter({ !characters.contains($0) }))
    }

    func stringByRemovingAll(subStrings: [String]) -> String {
        var resultString = self
        subStrings.map { resultString = resultString.stringByReplacingOccurrencesOfString($0, withString: "") }
        return resultString
    }
}

Example:

let str = "Hello, stackoverflow"
let chars: [Character] = ["a", "e", "i"]
let myStrings = ["Hello", ", ", "overflow"]

let newString = str.stringByRemovingAll(chars)
let anotherString = str.stringByRemovingAll(myStrings)

Result, when printed:

newString: Hllo, stckovrflow

anotherString: stack