How to print out the method name and line number in swift

Question

Here is an example of what I want to do:

func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError)
{
            


        

Answer 1

For swift 4 and swift 5:

func printLog(_ message: String, file: String = #file, function: String = #function, line: Int = #line) {
    #if DEVELOPMENT
        let className = file.components(separatedBy: "/").last
        print(" ❌ Error ----> File: \(className ?? ""), Function: \(function), Line: \(line), Message: \(message)")
    #endif
}

// "❌ Error ----> File: classNameViewController.swift, function: functionName(), Line: 123, Message: messageError"