Round double value to 2 decimal places

Question

I have a double value as 22.368511 I want to round it to 2 decimal places. i.e. it should return 22.37

How can I do that?

Answer 1

For Swift there is a simple solution if you can't either import Foundation, use round() and/or does not want a String (usually the case when you're in Playground):

var number = 31.726354765
var intNumber = Int(number * 1000.0)
var roundedNumber = Double(intNumber) / 1000.0

result: 31.726