How do I capture unified logging for diagnostics in Swift/Xcode?

Unified logging provides a powerful way to capture diagnostic information in your Swift applications. By utilizing the Unified Logging system, you can effectively log messages that can be viewed in the Console app on macOS or by using the `log` command in Terminal. Here's how to implement logging in your Swift/Xcode projects:

To log messages, you typically use the `os_log` function from the `os` module. This function allows you to create log messages of different types such as default, info, debug, error, and fault. Here's a simple example:

import os // Define your logger let logger = Logger(subsystem: "com.example.myapp", category: "network") // Logging messages logger.log("This is a default message") logger.info("This is an informational message") logger.error("This is an error message with a value: %@", 404)

unified logging Swift Xcode diagnostics os_log Logger macOS