I am working with Swift, using a dictionary, and then trying to put info into an array, and access values in the array. This is what I have in my code:
// I have abbreviated the actual dictionary to not waste question space...
var plateIssuers: Dictionary<String,String> = [
"Alberta": "Canada",
"British Columbia": "Canada",
"Manitoba":"Canada",
"VERMONT":"USA",
"WASHINGTON":"USA",
"WISCONSIN":"USA",
"WEST VIRGINIA":"USA",
"WYOMING]":"USA"]
// This is an attempt that seems to work to create an Array of unique values (turning into sets and then back to array
let countries:Array = NSSet(array: Array<String>(plateIssuers.values)).allObjects
let issuers:Array = NSSet(array: Array<String>(plateIssuers.keys)).allObjects
Later, in a tableView function, I have the following code:
println(countries[1])
cell.textLabel.text = countries[(indexPath.row)]
The println works fine (prints "Canada"), but the cell.textLabel line gives the following error (won't build):
Could not find an overload for 'subscript' that accepts the supplied arguments
How can the println work but not the next line. I should also mention that the second line works if I just refer to an array I built in a simple manner with strings in it. Is my problem the way I created the "countries" array? or is it a problem in how I am referencing it? Thanks
Do this:
let countries = NSSet(array: Array<String>(plateIssuers.values)).allObjects as Array<String>
Swift's compiler as usual is being coy in its expression of the problem. What it means here is that subscripting an array of AnyObject, which is what comes back from allObjects, is possible, but is not going to net you a String, which is what a label's text property expects.