Q:

draw a colored circle in a UITableViewCell

I'm trying to generate a UITableViewCell with a colored circle on the left.
My plan is to use UIButton and manipulate its layer's corner radius.
However, the colored button never appears.
My xib:

I have an IBOutlet to my ColorHolder UIButton and a variable for its color.
class ColoredCircleCell: UITableViewCell {

    @IBOutlet weak var colorHolder: UIButton!
    @IBOutlet weak var infoRow1: UILabel!
    @IBOutlet weak var infoRow2: UILabel!

    var circleColor: CGColor = UIColor.clear.cgColor 

    override func awakeFromNib() {
        super.awakeFromNib()

        colorHolder.layer.cornerRadius = colorHolder.bounds.size.height / 2
        colorHolder.layer.backgroundColor = circleColor
        colorHolder.clipsToBounds = true
}

In my cellForRowAt indexPath:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "CircleCell", for: indexPath) as! ColoredCircleCell

        print(cell.colorHolder.bounds.size.height)

        cell.colorHolder.layer.cornerRadius = cell.colorHolder.bounds.size.height / 2
        cell.colorHolder.layer.backgroundColor = UIColor.red.cgColor

        cell.infoRow1.text = "H1"

        return cell
    }

The console tells me  that the size of the cell is 1000. I'm guessing it still has not resized with respect to the row height.
EDIT: I've narrowed down the problem to cell.colorHolder.layer.cornerRadius = cell.colorHolder.bounds.size.height / 2 . The value of cell.colorHolder.bounds.size.height is always 1000. How do I extract the correct value AFTER it has been rendered to the screen? 
The output:

How do I add a configurable circle for my UITableViewCell?

A:

posting the answer here for completion's sake.
I had to add self.layoutIfNeeded() prior to accessing the bounds.
This post helped me out.
override func awakeFromNib() {
        super.awakeFromNib()

        self.layoutIfNeeded()   

        colorHolder.layer.cornerRadius = colorHolder.bounds.size.height / 2
        colorHolder.layer.backgroundColor = circleColor
        colorHolder.clipsToBounds = true
}

