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iOS

Posted by Aaron Moreno
Aaron Moreno
7,298 Points

My availablePositions instance isn't showing up like an array. Why is that?

//Beginning

struct Point{
    let x: Int
    let y: Int

    init(x: Int, y: Int){
        self.x = x
        self.y = y
    }


    func surroundingPoints(withRange range: Int = 1){

        var results: [Point] = []
        for xCoord in (self.x-range)...(self.x+range){
            for yCoord in (y-range)...(y+range){

                let coordinatePoint = Point(x: xCoord, y: yCoord)
                results.append(coordinatePoint)

            }
        }
    }
}

//at the end of my code...The instance that I'm assuming should be an array

    let availablePositions = position.surroundingPoints(withRange: range)

2 Answers

Ali Amin
Ali Amin
1,295 Points

Yeah sure, you forgot to add this too to function.

-> [Point]

It should be like this:

func surroundingPoints(withRange range: Int = 1) -> [Point] {
  ...
}

Also range and position should be something like this. (position should be of type Point and range should be an Int)

let position = Point(x: 1, y: 2)
let range = 2
Aaron Moreno
Aaron Moreno
7,298 Points

You're amazing Ali! Thank you!!

Ali Amin
Ali Amin
1,295 Points

You are welcome

Ali Amin
Ali Amin
1,295 Points
Ali Amin
Ali Amin
1,295 Points

You forgot to add return results at the end of the func

Aaron Moreno
Aaron Moreno
7,298 Points

Thanks for the response Ali, even after I add return results after the second bracket in the surroundingPoints method, it gives me an error at that return value and still on the availablePositions instance