How to set values to data class if some size is specified in kotlin?

Question

I have a data class in kotlin like this:

data class myDataClass(val myArr: ArrayList<Char>)

Now, suppose I create an instance of it as follows:

val myData = myDataClass(x)    // x is an integer; 1 <= x <= 9

I want that myData should have the following data:

println(myData.myArr)
// [A, B, C, D, ...]

It's hard to suppose you create an instance of the class like that when it results in a compilation error.... — Clay07g, Aug 15 '19 at 18:24
@Clay07g sorry for my bad english, I meant that I should be able to create an instance of the class like that so that it should give me the desired output. — Akshdeep Singh, Aug 15 '19 at 19:20

Andrei Tanana · Accepted Answer · 2019-08-15T19:55:19.803

1

It's possible:

data class myDataClass(val myArr: ArrayList<Char>) {
    constructor(i: Int) : this(ArrayList((0..i).map { ('A' + it).toChar() }))
}

But the truth is, it's a pretty strange code

edited Aug 15 '19 at 19:55

answered Aug 15 '19 at 18:45

Andrei Tanana

1 Answers1