How to avoid duplicate key error in swift when iterating over a dictionary

Question

I\'m practicing swift and I\'m trying to iterate over a Dictionary to print the key, but it gives me a

fatal error: Dictionary literal contains dupli

Answer 1

As others already said, you cannot create a dictionary where the same key does appear more then once.

That said I really like solution provided by luk2302 because if does offer a well structured approach.

Here I am just adding another solution.

Since the real information in your (wrong) dictionary is the value (not the key) what's the meaning of using a Dictionary?

You could simply use an array

let ages = [14, 15, 75, 43, 103, 87, 12]
ages.forEach { print($0) }