Fetch data from a URL using Combine framework

We can fetch data from the URL in Combine using dataTaskPublisher(for:) method.

The code looks like this:

import Combine
import Foundation
import PlaygroundSupport

PlaygroundPage.current.needsIndefiniteExecution = true

let url = URL(string: "https://jsonplaceholder.typicode.com/users/1")!
var cancellables: Set<AnyCancellable> = []

URLSession.shared
    .dataTaskPublisher(for: url)
    .compactMap { String(data: $0.data, encoding: .utf8) }
    .sink { completion in
        print(completion)
    } receiveValue: { value in
        print("\(value)")
    }
    .store(in: &cancellables)

The output of the code will be the JSON data fetched from the URL.

{
  "id": 1,
  "name": "Leanne Graham",
  "username": "Bret",
  "email": "Sincere@april.biz",
  "address": {
    "street": "Kulas Light",
    "suite": "Apt. 556",
    "city": "Gwenborough",
    "zipcode": "92998-3874",
    "geo": {
      "lat": "-37.3159",
      "lng": "81.1496"
    }
  },
  "phone": "1-770-736-8031 x56442",
  "website": "hildegard.org",
  "company": {
    "name": "Romaguera-Crona",
    "catchPhrase": "Multi-layered client-server neural-net",
    "bs": "harness real-time e-markets"
  }
}
finished