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go-dev

go-dev

github.com/docckerDevelopment1.1k45 installsUpdated 9w ago
Repository

About go-dev

go-dev is a coding-guidelines skill for Go developers, organizing practices for naming, errors, concurrency, tests, and performance, with advice on project structure.

Key features

  1. 01goimports and static-check guidance
  2. 02Naming and import-order conventions
  3. 03Error handling and wrapping
  4. 04Concurrency and lifecycle practices
  5. 05Table-driven tests and race checks
  6. 06Performance and project-structure advice

Use cases

  1. 01Standardize Go project conventions
  2. 02Plan error handling and concurrent code
  3. 03Organize tests, profiling, and project structure

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/doccker/cc-use-exp --skill go-dev

After installing, type/go-devin Claude Code to confirm it loaded.

Bundled filesreferences/date-time.mdreferences/go-style.md

Details

From the project README

Go 开发规范

参考来源: Effective Go、Go Code Review Comments、uber-go/guide


工具链

goimports -w .                    # 格式化并整理 import
go vet ./...                      # 静态分析
golangci-lint run                 # 综合检查
go test -v -race -cover ./...     # 测试(含竞态检测和覆盖率)

命名约定

类型规则示例
包名小写单词,不用下划线user, orderservice
变量/函数驼峰命名,缩写词一致大小写userID, HTTPServer
常量导出用驼峰,私有可驼峰或全大写MaxRetryCount
接口单方法用方法名+erReader, Writer

禁止: common, util, base 等无意义包名


import 顺序

import (
    "context"           // 标准库
    "fmt"

    "github.com/gin-gonic/gin"  // 第三方库

    "project/internal/model"     // 项目内部
)

错误处理

必须处理错误,不能忽略:

// ✅ 好:添加上下文
if err != nil {
    return fmt.Errorf("failed to query user %d: %w", userID, err)
}

// ❌ 差:忽略错误
result, _ := doSomething()

错误包装: 使用 %w 保留错误链,用 errors.Is() / errors.As() 检查


并发编程

基本原则:

  • 优先使用 channel 通信
  • 启动 goroutine 前考虑:谁来等待它?怎么停止它?
  • 使用 context.Context 控制生命周期
// ✅ 好:使用 context 控制
func process(ctx context.Context) error {
    done := make(chan error, 1)
    go func() { done <- doWork() }()

    select {
    case err := <-done:
        return err
    case <-ctx.Done():
        return ctx.Err()
    }
}

数据竞争: 使用 go test -race 检测


测试规范

// 表驱动测试
func TestAdd(t *testing.T) {
    tests := []struct {
        name     string
        a, b     int
        expected int
    }{
        {"positive", 1, 2, 3},
        {"zero", 0, 0, 0},
    }

    for _, tt := range tests {
        t.Run(tt.name, func(t *testing.T) {
            got := Add(tt.a, tt.b)
            if got != tt.expected {
                t.Errorf("Add(%d, %d) = %d, want %d", tt.a, tt.b, got, tt.expected)
            }
        })
    }
}

性能优化

陷阱解决方案
循环中拼接字符串使用 strings.Builder
未预分配 slicemake([]T, 0, cap)
N+1 查询批量查询 + 预加载
无限制并发使用 semaphore 或 worker pool
Raw SQL 别名用了保留字避免 year_month/order/status/rank 等 MySQL 保留字做别名
# 性能分析
go test -cpuprofile=cpu.prof -bench=.
go tool pprof cpu.prof

项目结构

project/
├── cmd/                    # 可执行文件入口
├── internal/               # 私有代码
│   ├── handler/
│   ├── service/
│   ├── repository/
│   └── model/
├── pkg/                    # 公共代码
├── go.mod
└── go.sum

详细参考

文件内容
references/go-style.md命名约定、错误处理、并发、测试、性能
references/date-time.md日期加减、账期计算、AddDate 溢出处理

📋 本回复遵循:go-dev - [具体章节]

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