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

Mehran Amini Tehrani
Mehran Amini Tehrani
1,523 Points
Posted by Mehran Amini Tehrani
Mehran Amini Tehrani
1,523 Points

Dictionary

Hello,

How can I Assign the value for key "UK" to a constant named ukCurrency?

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

6 Answers

Mehran Amini Tehrani
Mehran Amini Tehrani
1,523 Points
Mehran Amini Tehrani
Mehran Amini Tehrani
1,523 Points

It should be like this:

let ukCurrency = currencies["UK"]

Petar Popovic
Petar Popovic
Courses Plus Student 23,421 Points

Mehran you are right. I wanted to write the same but I forgot to change it when I copied your code and didn't see that until you said. I am happy you found a solution.

Happy coding and keep learning

Petar Popovic
PLUS
Petar Popovic
Courses Plus Student 23,421 Points
Petar Popovic
Petar Popovic
Courses Plus Student 23,421 Points

Well, you already did that :) You assigned key "UK" for value "Pound" to constant name ukCurrencey

Mehran Amini Tehrani
Mehran Amini Tehrani
1,523 Points
Mehran Amini Tehrani
Mehran Amini Tehrani
1,523 Points

Yes, but it gives me an error "You need to define 'let ukCurrency' ". How can i define it?

Petar Popovic
PLUS
Petar Popovic
Courses Plus Student 23,421 Points
Petar Popovic
Petar Popovic
Courses Plus Student 23,421 Points

It gives you an error because you made spelling mistake. You wrote ukCurrencey, what you need to write is ukCurrency

let currencies = ["US": "Dollar", "UK": "Pound", "JP": "Yen"]
let ukCurrency = ["UK": "Pound"]
Edwin Rivera
Edwin Rivera
924 Points
Edwin Rivera
Edwin Rivera
924 Points

Ive tried doing it that way and i get " Your code could not be compiled. Please click on "Preview" to view the compiler errors." when i check the preview there's nothing, Im i doing something wrong?

Petar Popovic
PLUS
Petar Popovic
Courses Plus Student 23,421 Points
Petar Popovic
Petar Popovic
Courses Plus Student 23,421 Points

Try to copy my code. Does it pass?

Edwin Rivera
Edwin Rivera
924 Points
Edwin Rivera
Edwin Rivera
924 Points

I was misunderstanding the question in general, the answer was: let currencies = ["US": "Dollar", "UK": "Pound", "JP": "Yen"] let ukCurrency = currencies["UK"]