Handling Web API Call in Figure 5.6

What does the sample code handle in Figure 5.6 in a Web API call scenario?

The sample code in Figure 5.6 is handling the Web API call (option C).

Explanation:

Web API Call: The sample code in Figure 5.6 is utilizing the dataTask(with:completionHandler:) method from URLSession to make a web API call. This method is responsible for sending a request to a specific URL and fetching the response data asynchronously. The completion handler in the code snippet manages the response, error, and data retrieved from the web API call.

Options Analysis:

- Option A - Updating UI with JSON result: While updating the UI with the JSON result is a common task after fetching data from a web API, there is no code within the completion handler that deals with UI updates in the provided snippet. - Option B - Getting data from the decoded JSON: The task of extracting data from decoded JSON is not explicitly shown in the code snippet, thus this option is not directly handled by the sample code. - Option D - Using JSON decoder: The code snippet does not contain any code related to JSON decoding, so this option is also not applicable. In conclusion, the sample code in Figure 5.6 is primarily focused on initiating a Web API call using URLSession's dataTask method. The completion handler is responsible for processing the response, error, and data obtained from the API call.
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