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

Nik Parekh
Nik Parekh
598 Points
Posted by Nik Parekh
Nik Parekh
598 Points

Can I please get some help with the second question

How do I remove and add "UK" to ukCurrency

2 Answers

Holt Hunter
Holt Hunter
4,629 Points
Holt Hunter
Holt Hunter
4,629 Points

Here is your dictionary:

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

To access an item in a dictionary you use the key instead of the position, for example:

println(currencies["UK"])

This would print "Pound", because it is located at the "UK" index. So to assign "Pound" to ukCurrency you would need to do this:

let ukCurrency = currencies["UK"]

That assigns "Pound" to ukCurrency which is what the quiz wanted you to do.