ios - 如何将分隔符后的两位数字转换为字符串？

Question

这就是我现在做的:

extension Decimal {    var formattedAmount: String {        let formatter = NumberFormatter()        formatter.generatesDecimalNumbers = true        formatter.minimumFractionDigits = 2        formatter.maximumFractionDigits = 2        return formatter.string(from: self) //mismatch type    }}

但我无法从 Decimal 创建 NSNumber。

Answer 1

这应该可行

extension Decimal {
    var formattedAmount: String? {
        let formatter = NumberFormatter()
        formatter.generatesDecimalNumbers = true
        formatter.minimumFractionDigits = 2
        formatter.maximumFractionDigits = 2
        return formatter.string(from: self as NSDecimalNumber)
    }
}