But it looks like that is not possible?

# getting-started

[Kevin]

But it looks like that is not possible?

[Pavlo Liapota]

You can declare a global function with the same name as your class, compute parameters there and then create and return instance using primary constructor.

class MyClass(size: Int)

fun MyClass(text: String): MyClass {
   val size = text.length
   return MyClass(size)
}

So you will be able to create object with MyClass(10) and MyClass("abc").

[Kevin]

In my case the parameters are objects of the class itself and I need access to the private variables.

[Kevin]

I went with making a function in the class' companion object.

[Pavlo Liapota]

operator fun invoke() I guess? 🙂

[Pavlo Liapota]

class MyClass(size: Int) {
    companion object {
        operator fun invoke(text: String): MyClass {
            val size = text.length
            return MyClass(size)
        }
    }
}

So again you can call just MyClass("abc")

[Kevin]

Oh wow that's cool.

[Kevin]

Kind of odd that you cannot do this directly with a constructor.

[Kevin]

But that's mostly what I want.

[Egor Trutenko]

What might be your use-case? You know you can omit primary constructor

[Kevin]

The primary constructor makes an object from its more primitive parts and the other one makes it from multiple copies of that object itself.