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

Posted by Jonas Kristensen
Jonas Kristensen
2,738 Points

Whats wrong?

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

Bummer! Whats wrong?

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

1 Answer

kjvswift93
kjvswift93
13,515 Points
kjvswift93
kjvswift93
13,515 Points

The second part of the challenge isn't asking you to remove anything from the dictionary, simply to assign the string "Pound" (the value for the key "UK") to a new constant named ukCurrency. This can be done in one of two ways. The proper way is this:

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

But the challenge will also pass by simply stating:

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