[FIXED] How to make Decimal conform LosslessStringConvertible in Swift 5?

Issue

I want to convert Decimal to String in Swift 5.

Since I directly tried

String(aDecimalNumber)

Then Xcode gives error message saying:

Decimal needs to conform LosslessStringConvertible

so I add an extension looks like:

extension Decimal: LosslessStringConvertible {
    public init?(_ description: String) {


    }
}

But it won't work. My understanding is to extract the description, which is of String type, to a Decimal. But not sure how to do this?

Solution

Here is a possible implementation:

extension Decimal: LosslessStringConvertible {
    public init?(_ description: String) {
        guard let decimal = Decimal(string: description) else {
            return nil
        }
        self = decimal
    }
}


let d: Decimal? = Decimal("1e9")  //1000000000

Answered By - ielyamani

Answer Checked By - David Marino (PHPFixing Volunteer)