How to parse a JSON starting with a nameless array? - json

Question

I'm very new to parsing (and coding)
This is my JSON:
[
{
"id": "BTC",
"currency": "BTC",
"symbol": "BTC",
"name": "Bitcoin",
"logo_url": "https://s3.us-east-2.amazonaws.com/nomics-api/static/images/currencies/btc.svg",
"rank": "1",
"price": "8890.83451549",
"price_date": "2020-05-05T00:00:00Z",
"price_timestamp": "2020-05-05T17:07:00Z",
"market_cap": "163265390419"
}
]
I'm trying to get a hold on the property price with the following:
struct GetPriceArray: Codable {
let getPriceArray: [GetPrice]
}
struct GetPrice: Codable {
let price: String
}
The problem is that the JSON path is 0.price (as indicated by JSON Viewer Awesome) and with the above, it is not possible to get a hold of that 0.
I already tried jumping directly to .price but it does not work.

Answer 1

Delete
struct GetPriceArray: Codable {
let getPriceArray: [GetPrice]
}
and decode an array
let result = JSONDecoder().decode([GetPrice].self, from: ...
Get the price with
result.first?.price

Answer 2

If you want GetPriceArray working with decoder and non-key JSON.
struct GetPriceArray: Codable {
let list: [GetPrice]
init(from decoder: Decoder) throws {
var container = try decoder.unkeyedContainer()
var elements: [GetPrice] = []
elements.reserveCapacity(container.count ?? 0)
while !container.isAtEnd {
if let element = try? container.decode(GetPrice.self) {
elements.append(element)
}
}
self.list = elements
}
}
Test.
guard let jsonData = jsonString.data(using: .utf8),
let getPriceArray = try? JSONDecoder().decode(GetPriceArray.self, from: jsonData) else {
return
}
for i in getPriceArray.list {
print(i.price)
}