rhenz

@resultBuilder
enum AttributedStringBuilder {
    static func buildBlock(_ components: NSAttributedString...) -> NSAttributedString {
        let attributedString = NSMutableAttributedString()
        for component in components {
            attributedString.append(component)
        }
        return attributedString
    }
}

rhenz

// Write your code below 🏦
struct SwiftBank {
  private let password: String
  private var balance: Double = 0 {
    didSet {
      if balance < 100 {
        displayLowBalanceMessage()
      }
    }
  }