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

Posted by Ben Bastow
Ben Bastow
24,657 Points

help me? 2/2 swift dictionary

hai! um the code isn't working.. it says wouldn't compile code.. I've tried these three versions of it

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

2) "let currencies = ["US":"Dollar", "UK":"Pound", "JP":"Yen"] let ukCurrency = currencies.indexForKey("UK")"

3) "let currencies = ["US":"Dollar", "UK":"Pound", "JP":"Yen"] let ukCurrency = currencies.removeValueForKey("UK")

2 Answers

Logan R
Logan R
22,989 Points
Logan R
Logan R
22,989 Points

Good tries, but all you need to do to assign a variable a key is to do:

Array["key"]

So in this case:

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

let ukCurrency = currencies["UK"]
Ben Bastow
Ben Bastow
24,657 Points
Ben Bastow
Ben Bastow
24,657 Points

thanks so much!! gosh I'm so stupid!! haha i spent half an hour trying to figure it out!

Logan R
Logan R
22,989 Points
Logan R
Logan R
22,989 Points

It's all good :) If you have any more questions, feel free to ask them!