ios-udemy-home String extension

gistfile1.txt

extension String {
  var camelCaseToEnglish: String {
    var result = ""
    var wordStartIndex = self.startIndex
    
    for (index, char) in self.enumerated() {
      if index > 0 && char.isUppercase {
        let previousWord = self[wordStartIndex..<self.index(self.startIndex, offsetBy: index)]
        if !previousWord.isEmpty {
          result += "\(previousWord) "
        }
        wordStartIndex = self.index(self.startIndex, offsetBy: index)
      }
    }
    
    let lastWord = self[wordStartIndex..<self.endIndex]
    if !lastWord.isEmpty {
      result += "\(lastWord)"
    }
    return result
  }
  
  var useShortAndFormat: String {
    replacingOccurrences(of: "And", with: " & ")
  }
}