Creating array of IBOutlets of NSLayoutConstraint's from Swift in iOS

While working on my iOS app, I wanted to modify UI Constraint set from Interface Builder from Swift code.

Below video shows how we can create Array of IBOutlets using Interface Builder. Here I am creating array of NSLayoutConstraint, which I want to modify from Swift Code.



Now lets see how we can manipulate constraints from swift. First we need to define array of IBOutlet. Below code shows the same.

@IBOutlet var constraints: Array?

Now, once you connect IBoutlet from Interface Builder as shown in above video. You can use those. In below code I am modifying NSLayoutConstraint's constant value.

if( Utils.isIPad() ) {
    for constraint: NSLayoutConstraint in constraints! {
        if(Utils.isIPad()) {
            constraint.constant = 30
        }
    }
}

That's it, Thank you for reading.