Precision String Format Specifier In Swift

Question

Below is how I would have previously truncated a float to two decimal places

NSLog(@\" %.02f %.02f %.02f\", r, g, b);

I checked the docs an

Answer 1

Why make it so complicated? You can use this instead:

import UIKit

let PI = 3.14159265359

round( PI ) // 3.0 rounded to the nearest decimal
round( PI * 100 ) / 100 //3.14 rounded to the nearest hundredth
round( PI * 1000 ) / 1000 // 3.142 rounded to the nearest thousandth

See it work in Playground.

PS: Solution from: http://rrike.sh/xcode/rounding-various-decimal-places-swift/