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.claude/skills/val1813-golangexpert/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-01 | ✗→✓ | ▲ Improved | 6% | 0% |
| case-02 | ✗→✓ | ▲ Improved | 7% | 0% |
| case-03 | ✗→✓ | ▲ Improved | 1% | 0% |
| case-04 | ✓→✓ | = Same ✓ | -1% | 0% |
| case-05 | ✓→✓ | = Same ✓ | 14% | 0% |
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if err != nil { return err } 模式,不要忽略错误-er 后缀(Reader, Writer, Closer)init() 函数,除非绝对必要sync.WaitGroup 等待多个 goroutineselect 语句必须包含 default 或 context.Done() 分支fmt.Errorf("context: %w", err) 包装错误Error() 接口errors.Is() 和 errors.As() 检查错误xxx_test.go,与源文件同包t.Helper() 标记辅助函数Benchmark 前缀go test ./...cmd/ 放可执行入口internal/ 放不导出的包pkg/ 放可复用的库代码Other measured skills in the registry, with their headline benchmark lift.