用续延实现副作用的抽象化

🔑 核心要点

• Abstracting effects with continuations Home Abstracting effects with continuations Representing errors as values is a powerful tool for writing reliable programs.
• A result value wraps the desired value or holds information about why the computation failed.
• An explicit result type represents the possibility of failure in the type system.
• A function that returns a result forces the caller to account for failure.
• The result is one instance of a bigger pattern.

💡 金句