# query.MultipleItemsError

- **Module:** query
- **Package:** libtmux
- **Language:** Rust
- **Kind:** struct
- **Source:** https://github.com/libtmux/libtmux-rs/blob/f0e37052c232636b61d095817046e6bfc8f2ca40/crates/libtmux/src/query.rs#L479
- **Page:** https://libtmux.org/en/rs/latest/reference/query-multipleitemserror/

An error indicating that an iterator contained more than one item.

## Example

```rust
use libtmux::query::{MultipleItemsError, QueryIteratorExt};

let values = [1, 2];
assert_eq!(values.iter().one_or_none(), Err(MultipleItemsError));
```