How do I append an array of Strings to an array of AnyObjects in Swift?

Question

I have an array that for the sake of the example can hold both Ints and Strings, so I'm calling it an array of AnyObjects.

If I have an array of Strings, and an array of Ints, how do I put those in with the existing array of AnyObjects? (To be clear I want it to be a one-level, flat array, not with nested arrays within the array or anything).

For example, this code produces an error:

var arr: [AnyObject] = []

let foo = ["one", "two"]
let bar = [1, 2]

arr += foo

The error being "Binary operator += cannot be applied to operands of type [String] and [AnyObject]".

What should I be doing here?

bobthegoalie · Accepted Answer · 2016-02-21 06:48:43Z

1

You need to set foo and bar to [AnyObject]. If you do not then swift assumes you have [String] and [Int] arrays.

var arr: [AnyObject] = []

let foo: [AnyObject] = ["one", "two"]
let bar: [AnyObject] = [1, 2]

arr += foo
arr += bar

answered Feb 21, 2016 at 6:48

bobthegoalie

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Comments

Craig Siemens · Accepted Answer · 2016-02-21 06:38:04Z

0

You need to change foo to a [AnyObject] instead of allowing it to default to [String]

let foo: [AnyObject] = ["one", "two"]

answered Feb 21, 2016 at 6:38

Craig Siemens

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