Swift - Simple to return and increase the original value?

Question

Task: Return current value of variable and increase itself after go out function.

Java implementation

class A {
    public int x = 0;

    public int changeVal() {
        return x++;
    }
}

Usage:

A a = new A();
a.x;              //output is 0
a.changeVal();    //output is 0    
a.x;              //output is 1

The same implementation converted to Swift:

class A {
    var x : Int = 0

    func changeVal() -> Int {
        let t = x               
        x += 1

        return t
    }
}

Is there any shorter way to achieve this without those two lines?

let t = x               
x += 1