How to use a tuple in a class in TypeScript

Question

I'm trying to learn TypeScript (2.1) by creating a dice roller. I figured I'd use tuples to match up the side rolled with a picture. For example, if I roll a 1 (using a random number generator I plan on implementing), I get back the representation for a circle.

class D6 {
    values: [number, string];
    values = [1, "Circle"];
}

However, just with that little bit of code, I am getting this error:

Subsequent variable declarations must have the same type. Variable 'values' must be of type '[number, string]', but here has type '(string | number)[]'.

Is it possible to use tuples in a class in TypeScript?

You probably want to use something closer to an object stackoverflow.com/questions/12787781/… — Andy Ray
– Andy Ray, Commented Dec 31, 2016 at 1:26

Nitzan Tomer · Accepted Answer · 2016-12-31 01:28:25Z

5

It should be:

class D6 {
    values: [number, string] = [1, "Circle"];
}

In your code you are defining two properties with the same name (values).

answered Dec 31, 2016 at 1:28

Nitzan Tomer

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