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

Swift code:

public class MyClass: NSObject {
    public static let myConst = "aConst"
}

and then in Objective-C:

[MyClass myConst]

Isn't this working as well? As in this works for me.

Also this is somewhat shorter as creating a object first (alloc, init). Making a new function for every constant is... not pretty :/

Update for Swift 4

Because of the changes in Swift 4's Objective-C inference, you need to add the @objc annotation to the declared constant as well. The previous declaration then becomes:

@objcMembers
public class MyClass: NSObject {
    public static let myConst = "aConst"
}

The calling Objective-C code remains the same.

Using @objcMembers makes all constants available (as if you'd write @objc before each constant), but I've had times where the compiler somehow wouldn't generate the corresponding ObjC code.

In those cases I'd suggest adding the @objc decorator before the constant as well.
I.e.: @objc public static let myConst = "aConst"