# tmux_select:count/1

- **Package:** libtmux_erlang
- **Language:** Erlang
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-erlang/blob/d1b6308440cf9eb8f6647e7ae434bce60e849368/apps/libtmux_erlang/src/tmux_select.erl#L290
- **Page:** https://libtmux.org/en/erlang/latest/reference/tmux_select-count-1/

```
count(Selection)
-spec count(t()) -> non_neg_integer().
```

Return the current materialized row count without I/O.

## Parameters

- `Selection` (`t()`)