# LibTmux.Query.oneOf

- **Package:** libtmux-haskell
- **Language:** Haskell
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-haskell/blob/663e212622a02aa74a9bdc8ff71e2b45fcb1d4d5/internal/LibTmux/Internal/Query.hs#L156
- **Page:** https://libtmux.org/en/haskell/latest/reference/libtmux-query-v-oneof/

```haskell
oneOf :: Eq value => Field row value -> [value] -> Expr row
```

Signature types: [`Eq`](https://hackage.haskell.org/package/base-4.22.0.0/docs/Data-Eq.html#t:Eq), [`Field`](/en/haskell/latest/reference/libtmux-query-t-field/), [`Expr`](/en/haskell/latest/reference/libtmux-query-t-expr/).

Membership using exact equality against a finite operand list. An empty
 list never matches, but its field requirement is still validated.

## Referenced declarations

- [`LibTmux.Query.Expr`](/en/haskell/latest/reference/libtmux-query-t-expr/) (data type)
- [`LibTmux.Query.Field`](/en/haskell/latest/reference/libtmux-query-t-field/) (data type)