Please explain in detail what will happen if the following program is executed:
#include <iostream>
int main() {
std::cout << "Hello, world!" << std::endl;
}
| import Foundation | |
| typealias NewFileCallback = (fileURL: NSURL) -> Void | |
| class ScreenshotDetector: NSObject, NSMetadataQueryDelegate { | |
| let query = NSMetadataQuery() | |
| var newFileCallback: NewFileCallback? | |