How to declare a constant in swift that can be used in objective c

Question

if I declare the swift constant as a global constant like:

let a = \"123\"

but the a cannot be found in

Answer 1

In your swift class,

let constant: Float = -1
class YourClass: NSObject {
class func getMyConstant() -> Float {return constant}
...
}

Clean, build to let xcode prepare this method useable for obj-c. Then at your obj-c class

if ([YourClass getMyConstant] != 0) {
...
}