How to cast from UInt16 to NSNumber

Question

I have a UInt16 variable that I would like to pass to a legacy function that requires an NSNumber.

If I try:

var castAsNSNumber : NSNumber = myUInt16

I get a compiler error 'UInt16' is not convertible to 'NSNumber'

Question

How can I recast this as an NSNumber?

Compte

How about var castAsNSNumber : NSNumber = NSNumber(myUInt16) ? – Willi

Thanks Adam, although your suggestion didn't work, it triggered a compiler hint that produced the answer that John has posted. – Compte

That is not casting, it is creating an NSNumber from a integer. – Melatonin

Answer 1

var castAsNSNumber = NSNumber(unsignedShort: myUInt16)

Lascivious

Swift 3: var castAsNSNumber = NSNumber(value: myUInt16) – Berkley

Answer 2

Swift 4 or newer (still works in 5.5.1):

import Foundation

let u16 = UInt16(24)
let nsnum = u16 as NSNumber
let andBack = UInt16(truncating: nsnum)

print("\(u16), \(nsnum), \(andBack)")

Try yourself: https://swiftfiddle.com/bido2kr4x5fqnlptznxtbra76e

Or instead of

let andBack = UInt16(truncating: nsnum)

you can also use

let andBack = nsnum.uint16Value

Blueing