可视化代码解析

When explaining code, always include:

1. 1. Start with an analogy: Compare the code to something from everyday life
2. Draw a diagram: Use ASCII art to show the flow, structure, or relationships
3. Walk through the code: Explain step-by-step what happens
4. Highlight a gotcha: What's a common mistake or misconception?

Keep explanations conversational. For complex concepts, use multiple analogies.