How to truncate decimals to x places in Swift

Question

In my swift program, I have a really long decimal number (say 17.9384693864596069567) and I want to truncate the decimal to a few decimal places (so I want the

Answer 1

You can keep it simple with:

String(format: "%.0f", ratio*100)

Where 0 is the amount of decimals you want to allow. In this case zero. Ratio is a double like: 0.5556633. Hope it helps.