# hooks.SparseValues.is_empty

- **Module:** hooks.SparseValues
- **Package:** libtmux
- **Language:** Rust
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-rs/blob/f0e37052c232636b61d095817046e6bfc8f2ca40/crates/libtmux/src/hooks.rs#L123
- **Page:** https://libtmux.org/en/rs/latest/reference/hooks-sparsevalues-is_empty/

```
hooks.SparseValues.is_empty(self) -> bool
```

Whether this option holds nothing.

One read back from tmux never does: a name holding nothing is reported
as absent rather than as an empty set.