Swift: error: use of instance member on type

Question

I'm trying to build a swift script but I got stuck with this error:

./1.swift:10:11: error: use of instance member 'thisIsmyFunction' on type 'myScript'; did you mean to use a value of type 'myScript' instead?
 myScript.thisIsmyFunction()
 ~~~~~~~~ ^

Here is my code:

#!/usr/bin/swift
import Foundation
class myScript {
    func thisIsmyFunction() {
        print("Do something in there!")
    }
}
myScript.thisIsmyFunction()

What I'm trying to do is access to the function and execute the print.

Any of you knows what I'm doing wrong?

I'll really appreciate your help.

Answer 1

You can only call an instance method on an instance of a class. For example, you would have to create an instance of myScript, then call it:

let script = myScript()
script.thisIsmyFunction()

You can also choose to make thisIsmyFunction a class method (which is formally known as a "type method" in Swift), and call it like the way you are doing right now:

class func thisIsmyFunction() {...}

Note the class modifier in front of func. Of course, this means you can't access self inside the function, because there is no longer an instance of the class.

For more information, see the Swift documentation on methods.

Aside: Swift classes should start with capital letters.