import Foundation

extension String {
    /// 138****5678
    var maskedPhone: String {
        guard count == 11 else { return self }
        return "\(prefix(3))****\(suffix(4))"
    }
}

extension Int {
    /// 分 → "¥12.34"
    var centsToYuanText: String {
        String(format: "¥%.2f", Double(self) / 100.0)
    }
}