How do I pass data from my ViewController to a Container View?

Question

I have a storyboard set up in XCode and have a MainViewController. In the MainViewController I have added a ContainerView which naturally creates a Segue with another VIewCo

Answer 1

This is pretty much the same answer as the one by rdelmar only in Swift.

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if let embeddedVC = segue.destinationViewController as? MyEmbeddedController where segue.identifier == "EmbedSegue" {
        embeddedVC.labelString = self.stringToPass
    }
}

"EmbedSegue" has to the segue identifier you set in Interface Builder.