# query.FilterExpr.not

- **Module:** query.FilterExpr
- **Package:** libtmux
- **Language:** Rust
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-rs/blob/f0e37052c232636b61d095817046e6bfc8f2ca40/crates/libtmux/src/query.rs#L1182
- **Page:** https://libtmux.org/en/rs/latest/reference/query-filterexpr-not/

```
query.FilterExpr.not(self) -> Self
```

Negate this expression.

## Example

```rust
use libtmux::query::BoolField;
use libtmux::query::__private;

struct Row;
let field: BoolField<Row> = __private::bool_field("row", "done");
assert_eq!(field.eq(false).not(), field.eq(false).not());
```