模式匹配
This segment should take about 50 minutes. It contains:
| Slide | Duration |
|---|---|
| Irrefutable Patterns | 5 minutes |
| Matching Values | 10 minutes |
| Destructuring Structs | 4 minutes |
| Destructuring Enums | 4 minutes |
| let 控制流 | 10 minutes |
| 练习：表达式求值 | 15 minutes |
This segment should take about 50 minutes. It contains:
| Slide | Duration |
|---|---|
| Irrefutable Patterns | 5 minutes |
| Matching Values | 10 minutes |
| Destructuring Structs | 4 minutes |
| Destructuring Enums | 4 minutes |
| let 控制流 | 10 minutes |
| 练习：表达式求值 | 15 minutes |