# DomainFunction class

Namespace: [Grasshopper2.Types.Functions.Standard](https://developer.rhino3d.com/api/gh2/namespace/grasshopper2.types.functions.standard.md) · Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

```cs
[IoId("00000000-D1E5-4583-83A7-43B60345745D")]
public sealed class DomainFunction : FunctionF<Function>
```

A unary function which limits the existence of an underlying function to a given [Region1](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.numeric.region1.md).

## Constructors

- [DomainFunction](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.domainfunction/ctor.md): (3 overloads)

## Properties

- [Region](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.domainfunction/region.md)
- [Ui](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.domainfunction/ui.md)

## Methods

- [EmitDerivative](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.domainfunction/emitderivative.md)
- [Holes](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.domainfunction/holes.md): Everything the region leaves out is undefined, so the gaps in it are holes in their own right, on top of whatever the operand already lacks.
- [Poles](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.domainfunction/poles.md): Only the part of the operand inside the region survives, so poles outside it are dropped rather than relayed.
- [Y](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.standard.domainfunction/y.md)

## Inherited Members

- From [FunctionF<T1>](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionf-1.md): [F](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionf-1/f.md), [DomainEstimate](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionf-1/domainestimate.md), [Store](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionf-1/store.md)
- From [FunctionWithCaching](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching.md): [Derivative](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching/derivative.md), [Integral](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching/integral.md), [Nomen](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching/nomen.md), [Notation](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching/notation.md), [EmitIntegral](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.functionwithcaching/emitintegral.md)
- From [Function](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function.md): [Asymptotes](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function/asymptotes.md), [AutoCoDomain](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function/autocodomain.md), [Integrate](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function/integrate.md), [YYYY](https://developer.rhino3d.com/api/gh2/type/grasshopper2.types.functions.function/yyyy.md)