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

dennis snoeijer
dennis snoeijer
512 Points
Posted by dennis snoeijer
dennis snoeijer
512 Points

how do i update a constant?

its asking me to update a constant, but isn't the whole point of a constant to not update it?

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

1 Answer

Enrique Munguía
Enrique Munguía
14,311 Points
Enrique Munguía
Enrique Munguía
14,311 Points

You cannot modify the constant once it is declared, but you can "update" it in the declaration. For example you can add another currency to the dictionary

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