Reviews a code snippet for readability, performance, best practices and error handling, then returns improved code with explanations.
Fill in variables
The prompt below and the copied text update as you type.
Improve the following code
```
{{code}}
```
Please suggest improvements for:
1. Code readability and maintainability
2. Performance optimization
3. Best practices and patterns
4. Error handling and edge cases
Provide the improved code along with explanations for each enhancement.改善以下代码
```
{{code}}
```
请针对以下方面提出改进建议：
1. 代码可读性与可维护性
2. 性能优化
3. 最佳实践与设计模式
4. 错误处理与边界情况
提供改进后的代码，并对每一项增强进行解释。