```rust let x = 10; println!("size of `x` in bytes: {}", std::mem::size_of_val(&x)); ```
Scanned 9/8/2026
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# 常用技巧
## 变量
- 查询变量的字节:
```rust
let x = 10;
println!("size of `x` in bytes: {}", std::mem::size_of_val(&x));
```
## 流程控制
- 指定中断的 Loop ：
```rust
fn main() {
'outer': loop {
println!("Outer Inline !");
'inline': loop {
break 'outer';
}
println!("Outer Errors !");
}
}
```
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