CODEWITHSUNDEEP
swiftboolean
Matt
Matt

Reputation: 61

How do I return a boolean value?

So I have a class with the method isApplicableToList(list: [ShoppingItem]) -> Bool. This should return true if a discount can be applied based on the supplied list of product ids (i.e. a product must be matched to an offer) and the product IDs are 901 and 902.

I have attempted it but uncertain if done correctly or if there is a better way.

thanks in advance!

class HalfPriceOffer :Offer {

    init(){
        super.init(name: "Half Price on Wine")
        applicableProductIds = [901,902];
    }

    override func isApplicableToList(list: [ShoppingItem]) -> Bool {
        //should return true if a dicount can be applied based on the supplied list of product ids (i.e. a product must be matched to an offer)

        if true == 901 {
            return true
        }
        if true == 902 {
            return true
        }

        else {

            return false

        }
    }
}

ShoppingItem

class ShoppingItem {

    var name :String
    var priceInPence :Int
    var productId :Int

    init(name:String, price:Int, productId:Int){
        self.name = name
        self.priceInPence = price
        self.productId = productId
    }
}

Upvotes: 0

Views: 282

Answers (1)

vacawama
vacawama

Reputation: 154583

Loop through the items in your list and test if the item's productId is in the list of applicableProductIds using the contains method. If none is found, return false.

override func isApplicableToList(list: [ShoppingItem]) -> Bool {
    //should return true if a dicount can be applied based on the supplied list of product ids (i.e. a product must be matched to an offer)

    for item in list {
        if applicableProductIds.contains(item.productId) {
            return true
        }
    }

    // didn't find one       
    return false
}

Upvotes: 3

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