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principle-dry

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识别并消除知识重复,确保系统中每条知识有唯一权威表示。当需要重构代码、整理文档、优化配置、建立单一数据源时使用。覆盖代码重复、数据冗余、文档重复三大维度,提供具体消除策略和权衡建议。

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/data/principle-dry/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/principle-dry/. Do not write files or run scripts until I approve.

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DRY Principle Skill

Scope: COMMON(全阶段通用)

版本: 0.1.0(占位)| 创建日期: 2025-11-27


概述

DRY(Don't Repeat Yourself)是软件开发的核心原则:

┌─────────────────────────────────────────────────────┐
│              🔄 DRY Principle                       │
├─────────────────────────────────────────────────────┤
│  "Every piece of knowledge must have a single,     │
│   unambiguous, authoritative representation        │
│   within a system."                                │
│                        — Andy Hunt & Dave Thomas   │
└─────────────────────────────────────────────────────┘

检查维度

代码重复

  • 是否有复制粘贴的代码块
  • 相似逻辑是否抽象为函数/方法
  • 常量是否集中定义

数据重复

  • 同一数据是否在多处定义
  • 配置是否有单一来源(SSOT)
  • 数据库是否有冗余字段

文档重复

  • 同一信息是否在多个文档中维护
  • API 文档是否从代码自动生成
  • 注释是否与代码重复

知识重复

  • 业务规则是否集中管理
  • 验证逻辑是否在多处实现
  • 错误消息是否统一定义

分级检查策略

L1-STREAMLINED

  • 每维度检查 1 个核心点(共 4 项)
  • 关注明显重复
  • 通过标准:4 项中 3 项通过(≥75%)

L2-BALANCED

  • 每维度检查 2-3 个关键点(共 8-12 项)
  • 使用工具扫描代码重复率
  • 通过标准:8 项中 7 项通过(≥87.5%)

L3-RIGOROUS

  • 全面检查所有子项(12+ 项)
  • 量化重复率指标(目标 < 5%)
  • 识别 SSOT 候选并记录
  • 通过标准:12 项中 11 项通过(≥91.7%)

>> 命令

>>dry_check_l1       # DRY 快速检查(4维度各1个关键点)
>>dry_scan_code      # 扫描代码重复
>>dry_find_ssot      # 识别需要 SSOT 的地方

相关 Skills

  • 同类: principle-kiss, principle-yagni, principle-soc(设计原则家族)
  • 应用: refactoring(消除重复的重构技术)
  • 验证: code-review(代码审查时检查 DRY)
  • 文档: document-quality(文档中避免重复)

TODO: 待细化重复检测规则和重构建议