# PairMatch enum

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

```cs
public enum PairMatch
```

Enumerates the types of conversion/type-pair matchings.

## Values

| Name | Value | Description |
| --- | --- | --- |
| None | 0 | There is no known pair which matches (a,b). |
| Direct | 1 | There is an exact match for the pair (a,b). |
| Implied | 2 | There is a known pair for less derived types of (a,b). |