</>SkillRecallRECALL WHAT YOU KNOW
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iOS Developer EssentialsNetworking & REST APIs (URLSession)

12 items

1

Handling URLSession Errors Safely

Code Quiz
2

Detecting Network Failures

Quiz
3

Fetching JSON with URLSession

Code Quiz
4

Checking HTTP Status Codes

Quiz
5

Loading, Errors & Flaky Networks

Slides / Video
6

REST APIs with URLSession Basics

Slides / Video
7

Handling Loading, Errors & Flaky Networks

Flashcard
8

REST Requests with URLSession

Flashcard
9

URLSession Errors & Retry Resilience

Slides / Video
10

REST Calls with URLSession & Async

Slides / Video
11

Handling Network Errors & Retries

Flashcard
12

REST Calls & Async Responses in URLSession

Flashcard
Code QuizAdvanced

Handling URLSession Errors Safely

Spot the bug in this URLSession data task that mishandles flaky connectivity and errors.

Codeswift
func loadProfile(completion: @escaping (Profile?) -> Void) {
    isLoading = true
    let task = URLSession.shared.dataTask(with: url) { data, response, error in
        self.isLoading = false
        let profile = try? JSONDecoder().decode(Profile.self, from: data!)
        completion(profile)
    }
    task.resume()
}

What is the bug in this networking code?