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

Not sure how to solve this second part, any help? let ukCurrency = currencies(1)

Any help?

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

2 Answers

Currencies is a dictionary which uses key/value pairs. Try referencing it this way:

let ukCurrency = currencies["UK"]

In this situation, your abbreviations are your keys and the currency is the value. You can use one to reference the other in a more specific way than calling an index number like with Arrays (I.E. currencies[1]).

For example: if I have:

let  stuff = ["Things": "More Stuff"];

and I wanted to know what the value of "Things", I would do this:

let valueOfThings = stuff["Things"];

The value would of valueOfThings would be "More Stuff".

Managed to solved it with your help!