AnyEncodable conformance to Equatable

[stefanprutianu]

Hi @mattt,

I was exploring your project and I have a short question.

Am I assuming incorrectly that the assertion bellow should hold?

let t0: AnyEncodable = ["x": 1]
let t1: AnyEncodable = ["x": 1]

assert(t0 == t1, "These should be equal")

I've read the conformance of AnyEncodable to Equatable and it's not clear to me if my expectations are wrong or there's something missing.

Thanks,
Stefan

[mattt]

Apologies for the late response, @stefanprutianu.

Equatability holds for AnyEncodable, but things can get ambiguous when literals are involved. An == test works if you explicitly cast 1 as AnyEncodable or recast each declaration as [String: AnyEncodable]

let t0: AnyEncodable = ["x": 1 as AnyEncodable]
let t1: AnyEncodable = ["x": 1 as AnyEncodable]
t0 == t1 // true

let u0: [String: AnyEncodable] = ["x": 1]
let u1: [String: AnyEncodable] = ["x": 1]
u0 == u1 // true

Based on this, I think the correct resolution for this issue would be to remove ExpressibleByDictionaryLiteral conformance from AnyCodable types (you would still be able to declare as [String: AnyEncodable] or [AnyHashable: AnyEncodable]).
Edit: Maybe not. That would break nested dictionary literals. I'll have to think about other approaches.

[minacle]

This issue has solved by #51.