How to call a function from another class that has no type?

Question

Swift

I can't figure out what the problem is. How to call a function that has no type at all to print text? "Instance member 'mustprint' cannot be used on type 'Printer'; "

ViewController.swift
class ViewController: UIViewController {

    @IBAction func action (sender: UIButton) {
        Printer.mustprint() //не билдит
    }
}



Printer.swift
class Printer: ViewController {

  func mustprint() {
        print ("was printed")
    }

}

Answer 1

Are you sure you know the Swift language? Judging by the code and the question - no.
You need to understand what a type method is and what an instance method is.
The type method is defined like this. The static keyword can be replaced with class (but that doesn't matter)

class Printer {
  static func mustprint() {
    print ("was printed")
  }
}

And it is called like this
----------
And what you wrote is an instance method

class Printer {
   func mustprint() {
    print ("was printed")
  }
}

And it is called first by creating an instance of this class, and then calling the function.
----------
What they tell you here: "Instance member 'mustprint' cannot be used on type 'Printer'; "

Answer 2

in main.css on line 4834 change the width to 100% and remove the margins

.right-col {
    float: none;
    margin: 0 auto;
    margin-right: 40px;
    width: 400px;
}

Answer 3

Help:
* max-width: 100% ;
this is not entirely correct (although it is debatable if it is meant as a global element property policy), but if it is difficult to find the right element, whose content goes beyond 100% (either text, or padding, or whatever)