Swift error when trying to access Dictionary: `Could not find member 'subscript'`

Question

This won\'t compile: I\'ve tried a couple different things; different ways of declaring th

Answer 1

response is declared as such:

var response = Dictionary()

So the compiler thinks response["current_rates"] will return an Any. Which may or may not be something that is subscript indexable.

You should be able to define you type with nested Dictionaries, 3 levels and eventually you get to a float. You also need to drill in with optional chaining since the dictionary may or may not have a value for that key, so it's subscript accessor returns an optional.

var response = Dictionary>>()
// ... populate dictionaries
println(response["current_rates"]?["a"]?["b"]) // The float