A few differences:
printvsprintln:
The print function prints messages in the Xcode console when debugging apps.
The println is a variation of this that was removed in Swift 2 and is not used any more. If you see old code that is using println, you can now safely replace it with print.
Back in Swift 1.x, print didn't add newline characters at the end of the printed string, whereas println did. But nowadays, print always adds the newline character at the end of the string, and if you…

