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Today we're looking at SwiftyBeaver, a library from Sebastian Kreutzberger that aims to improve Xcode's logging capabilities. Let's dive in.

After adding the library to our project we'll need to import the library in our AppDelegate. We'll also need to create a global log reference we can use throughout our app:

import SwiftyBeaver
let log = SwiftyBeaver.self

Then we'll need to tell SwiftyBeaver to log somewhere, let's set it up to log to Xcode's console and a log file:

let console = ConsoleDestination()
let file = FileDestination()


SwiftyBeaver is built around the concept of "destinations". Here we're adding one for the Xcode console, then another to log to a file in our app's documents directory.

Now, we can use our global log reference to log messages. There's functions for each of the different levels. Each will log its level in its own color:

log.verbose("Nothing really happened") // gray
log.debug("A thing happened") // blue
log.info("A good thing happened") // green
log.warning("A probably bad thing happened") // yellow
log.error("A definitely bad thing happened") // red

Both built-in destinations have a ton of configuration options allowing us to customize how we'd like our logs to behave. We can customize the format of log statements or change a file destination's location, we can even define our own destinations if needed!

More info about SwiftyBeaver can be found at git.io/swiftybeaver