rust

# Rust Error Patterns

Common Rust errors with diagnosis and solutions.

## Ownership Errors

### cannot move out of borrowed content

```rust
error[E0507]: cannot move out of borrowed content
 --> src/main.rs:5:9
  |
5 |     let s = &vec[0];
  |             ^^^^^^^ cannot move out of borrowed content
```

**Solutions**:
```rust
// Clone if needed
let s = vec[0].clone();

// Or borrow instead of move
let s = &vec[0];

// Use .get() for Option
if let Some(s) = vec.get(0) {
    // use s as reference
}
```

---

### cannot borrow as mutable because it is also borrowed as immutable

```rust
error[

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