SOLVED: Decimal Confusion

@RacerMan HWS+

Sep '24


When I had "cost" as a Double everything was happy,
but when I changed "cost" to Decimal (becuase it's money)
I get errors when I assign a value of 10000.00 to cost.
Isn't decimal a numeric value like Double? Says it doesn't conform.

I'm lost & confused.

import Foundation

protocol Building {
    var rooms: Int { get set}
    var cost: Decimal { get set }
    var agent: String { get set }

    func printSalesSummary(rooms: Int, cost: Decimal, agent: String) 

}

struct House: Building {
    var rooms = 10
    var cost = 10000.00
    var agent = "Jim Jones"

    func printSalesSummary(rooms: Int, cost: Decimal, agent: String) {
        print("Sales Summary: Rooms \(rooms) Cost \(cost) Agent \(agent)")
    }

}

@MartinAtElitappar HWS+

Sep '24

Hello,

I understand how frustrating type mismatches can be, especially when dealing with numerical types in Swift.

    var cost1: Decimal = 10000.00 // <- Decimal
    var cost2 = Decimal(10000.00) // <- Decimal
    var cost3 = 10000.00 // <- Double

You will be working with Decimal in Project 10, maybe it can help you understand more?

@roosterboy HWS+

Sep '24

Do this:

var cost = Decimal(10000.00)

Question: Why does your printSalesSummary method take arguments? Isn't it supposed to be printing the properties of the particular House instance it is called on? You wouldn't want to have to pass in the values every time you call it, nor would you want to be able to print out random values passed in that aren't the values held by a particular House instance.

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