Error when trying to store random element from array in variable Swift 2

Question

I have an array of area codes and I am trying store a random element from the array in a variable and I get an error "instance member 'areaCodes' can not be used on type 'ViewController' ". Any suggestions?

var areaCodes = [209, 213, 310, 323, 408, 415]
var firstThree = areaCodes[Int(arc4random_uniform(UInt32(areaCodes.count)))]

Please show where/how you're doing this in your view controller. There is currently not enough information to understand what it wrong. Sidenote: Your code works in a playground — Adam Campbell
– Adam Campbell, Commented Jan 29, 2016 at 4:36
Those two lines work fine on swiftstub, so more context is needed to understand your problem. — Michael
– Michael, Commented Jan 29, 2016 at 4:37

Leo Dabus · Accepted Answer · 2016-01-29 05:35:00Z

1

You can not access your array at initialization time. Change your property to a read only computed property:

var firstThree: Int { return areaCodes[Int(arc4random_uniform(UInt32(areaCodes.count)))] }

answered Jan 29, 2016 at 5:35

Leo Dabus

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user3400012 · Accepted Answer · 2016-01-29 05:20:45Z

0

You have to assign the firstThree variable inside a function of your class.

answered Jan 29, 2016 at 5:20

user3400012

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