how do you use this in swift2 ?

Hi Jivesh,

From what I understand, the question you're asking is how to print a functions return type in Swift 2.0. The println function in the latest Swift has been shortened down to print. In this videos example, he has

println("Area = "\(calculateArea(10, 2))")

So in Swift 2.0, it should look like this.

print("Area = "\(calculateArea(10,  2))")

There has also been changes to calling a function method (mostly to do with external names), for example:

In Swift 1.2, you could of called a method like this:

func calculateArea(height: Int, width: Int) -> Int {
    return height * width
}

calculateArea(100, 2)

Now in Swift 2.0, you could must provide the external parameter names (excluding the first one by default)

calculateArea(100, width: 2)

If the preference was to include/exclude the name, use underscore (_) next to the parameter name. Otherwise you would need to name your external parameters:

Exclude

func calculateArea(height: Int, _ width: Int) -> Int {
    return height * width
}

calculateArea(100, 2)

Include

func calculateArea(heightvalue height: Int, widthval width: Int) -> Int {   // NOTE: heightval and widthval may also be the same names as the parameters
    return height * width
}

calculateArea(heightvalue: 100, widthval: 2)

Everything else in this video should work the same. Hope I've helped. Happy Coding! :)