Cannot find an initializer for type 'String' that takes an argument list of type '(format: String, argument: UInt32

Question

I created a playground in Xcode 6.3 (6D570) and entered the following code:

import UIKit
var randum_num = arc4random_uniform(13) + 1
String(format: "card%i", arguments: randum_num)

And I got this error:

cannot find an initializer for type 'String' that accepts an argument list of type '(format: String, argument: UInt32

Sorry for being completely new to Swift, thanks for any advice!

PS I am following this tutorial: link

+3

David Apr 19 15 at 1:53

1 answer

Leo dabus · Accepted Answer · 2015-04-19T01:55:26+0000

You just need to omit the "arguments:". Try it like this:

let randum_num = arc4random_uniform(13) + 1
String(format: "card%i",  randum_num)

or simply

String(format: "card%i",  arc4random_uniform(13) + 1)