# LibTmux.Filter.to_predicate/2

- **Module:** LibTmux
- **Package:** libtmux
- **Language:** Elixir
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-elixir/blob/66b9b1c3f3f3186428abdfda2c76f5cf87446710/lib/libtmux/filter.ex#L111
- **Page:** https://libtmux.org/en/elixir/latest/reference/libtmux-filter-to_predicate-2/

```
to_predicate(filter, options)
@spec to_predicate(t(), [
        {:snapshot, LibTmux.Snapshot.t()}
      ]) :: (LibTmux.Schema.observation() ->
               boolean())
```

Prepares a local unary predicate after validating captured coverage, including empty domains.

See the [worked example](api-examples.html#local-graph-and-filtering).

## Parameters

- `filter` (`t()`)
- `options` (`[{:snapshot, LibTmux.Snapshot.t()}]`)