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iOS Swift Basics (retired) Collections What is a Dictionary?

Posted by Andrew Pandaleon
Andrew Pandaleon
311 Points

Dictionaries Challenge Var vs. Let

There seems to be a problem with this challenge and I can't get past it. To complete the first part I have to create a constant called currencies. Then I have to change that immutable dictionary in the second part. This is not possible as far as I can tell.

Is it me? or is this challenge messed up.

Thanks, -Andrew

dictionaries.swift 
var currencies = ["US": "Dollar", "UK": "Pound", "JP": "Yen"]
let ukCurrencies = currencies.removeValueForKey("UK")

1 Answer

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Hi Andrew,

This challenge has caught you and other students off guard but I still think it's due to a misunderstanding of what the keyword "assign" means.

In any case the challenge wants you retrieve the value for the key UK and assign it to a new constant called ukCurrency.

let currencies = ["US": "Dollar", "UK": "Pound", "JP": "Yen"]
let ukCurrency = currencies["UK"]

Happy coding!

Andrew Pandaleon
Andrew Pandaleon
311 Points

Hey Chris, Thanks!

By the way, I'm looking for a good coder as I'm learning to create an app I have in the works. I have investors lined up and a prototype created in Titanium but I need a proper, natively coded, reliable version to move forward. Do you know anyone who would be interested?

Thanks again for you assistance, -Andrew

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

No worries, I'm in Australia so I don't have many contacts outside but one company whom I've worked with are Two Bulls who are professional app developers but come at a price, might be worth just calling or sending them an email.