go-error-handling

SKILL.md

In Go, errors are values - they are created by code and consumed by code. This skill covers how to return, structure, wrap, and handle errors effectively.

Use error to signal that a function can fail. By convention, error is the last result parameter.

Never return concrete error types from exported functions - a concrete nil pointer can become a non-nil interface value:

来自 Google 和 Uber 风格指南的全面 Go 错误处理模式。涵盖返回错误、用 %w 包装、哨兵错误、选择错误类型、处理错误一次、错误流结构和日志记录。在编写创建、返回、包装或处理错误的 Go 代码时使用。 来源：cxuu/golang-skills。

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