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

Posted by Harry Stebbings
Harry Stebbings
1,097 Points

Can you help me with where I am going wrong here? let "ukCurrency" = "UK"

could you help me here, looking at the preview is not really helping. Thanks so much.

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

1 Answer

Holger Liesegang
Holger Liesegang
50,595 Points

Hi Harry Stebbings !

Challenge Task 2 of 2 asks you to "Assign the value for key "UK" to a constant named ukCurrency."

You do this like this:

let ukCurrency = currencies["UK"]

currencies is the dictionary and e.g. ["UK": "Pound"] one of the key-value pairs in this dictionary. To get the value for the key "UK" you have to ask for it like this: currencies["UK"] ...which will deliver the value "Pound". Now all you have to do is assigning this to a constant named ukCurrency.

The complete solution should be:

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