How to round an NSDecimalNumber in swift?

Question

I can\'t find any resources on this, and I\'ve been trying all sorts of stuff, but nothing works.

According to Apple\'s documentation, you round an NSDecimalNumber l

Answer 1

// get a decimal num from a string

let num = NSDecimalNumber.init(string: numStr)

// create an NSDecimalNumberHandler instance 

let behaviour = NSDecimalNumberHandler(roundingMode:.RoundUp, 
scale: 1, raiseOnExactness: false, 
raiseOnOverflow: false, raiseOnUnderflow: 
false, raiseOnDivideByZero: false)

// pass the handler to the method decimalNumberByRoundingAccordingToBehaviour.

// This is an instance method on NSDecimalNumber that takes an object that
// conforms to the protocol NSDecimalNumberBehaviors, which NSDecimalNumberHandler does!

let numRounded = num.decimalNumberByRoundingAccordingToBehavior(behaviour)