# LibTmux.FSharp.Filter.none

- **Module:** LibTmux.FSharp
- **Package:** LibTmux.FSharp
- **Language:** F#
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/cf34b255c896d19a97e7d7fabea58609c916012d/src/LibTmux.FSharp/Query.fsi#L105
- **Page:** https://libtmux.org/en/fsharp/latest/reference/libtmux-fsharp-filter-none/

```
val none: relation: Relation<'Parent, 'Child> -> predicate: Filter<'Child> -> Filter<'Parent>
```

Requires no matching child, returning true for an empty captured relation.

## Parameters

- `relation` (`Relation<'Parent, 'Child>`)
- `predicate` (`Filter<'Child>`)