How to use Swift struct in Objective-C

Question

Simply I have a struct that stores the application constants as below:

struct Constant {

    static let ParseApplicationId = \"xxx\"
    static let ParseCli         


        

Answer 1

You should make the let statements private if you want to make other Swift types in your code to access these constants only via class:

private let AppGreenColor = UIColor(red: 0.2, green: 0.7, blue: 0.3 alpha: 1.0)

@objc class Constant {
    class func appGreenColor() -> UIColor { return AppGreenColor }
}

In Swift, you can use them like this:

UIColor *greenColor = Constant.appGreenColor

The following line will not compile anymore now since the let statement is private:

UIColor *greenColor = appGreenColor