why does the Swift code generated by Postman use semaphores? #10053
Description
Start with a simple GET request in Postman, and then ask Postman to generate the code for the corresponding Swift equivalent using URLSession. You'll get something with this form:
var semaphore = DispatchSemaphore (value: 0)
var request = //
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data else {
print(String(describing: error))
semaphore.signal()
return
}
print(String(data: data, encoding: .utf8)!)
semaphore.signal()
}
task.resume()
semaphore.wait()
This is wrong. One should basically never use semaphores, and certainly there is no need for them here. The correct answer to the question that we're asking Postman, how to perform this same request in Swift, is to take all of that code and delete every line containing the word "semaphore". So, since everyone is always going to have to do that, why include those lines to begin with?