So I'm looking at this Solidity pattern where you define a custom library called GoonLib with an add function for handling uint256 operations. Then you create a custom type NumberoGoono (basically a uint256 wrapper) and attach the library to it using the 'using' keyword.

The thing is, you initialize an internal state variable _number with a value of 1, then you call _number.add(5) to execute the library function. It's a clean way to extend type functionality without bloating your main contract logic.

But honestly—why would you structure it this way? I mean, the pattern works for complex operations where you want to keep things modular. If you're doing batch arithmetic or sophisticated math calculations, attaching libraries to custom types keeps your code organized. For simple additions though? Feels like overkill. Depends on what you're actually building.