It is a playground library that closely mirrors Rust's `Option` and `Result` API. While created primarily for fun and learning, it's robust enough for real-world applications. It allows for safer, more expressive handling of optional values through a monadic interface. snake_case is used for the plausibility of the original.

The name `unwrap-or` is a playful reference to both the `unwrap_or` method found in the `Option`/`Result` types, and a hint at the package's contents - "-OR" standing for O'ption and R'esult types. It also cleverly references the logical `OR` operation, reflecting how these monadic types encapsulate one of two possible states - either `Some` or `None` for `Option`; either `Ok` or `Err` for `Result`.