Count the number of lines in a Swift String

Question

After reading a medium sized file (about 500kByte) from a web-service I have a regular Swift String (lines) originally encoded in .isolatin1. Befor

Answer 1

Swift 5 Extension

extension String {
    
    func numberOfLines() -> Int {
        return self.numberOfOccurrencesOf(string: "\n") + 1
    }
    
}

Example:

let testString = "First line\nSecond line\nThird line"
let numberOfLines = testString.numberOfLines() // returns 3