# Accumulation enum

Namespace: [Grasshopper2.Components.Standard](https://developer.rhino3d.com/api/gh2/namespace/grasshopper2.components.standard.md) · Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

```cs
public enum Accumulation
```

Enumerates the various data accumulation behaviours of looping cluster outputs.

## Values

| Name | Value | Description |
| --- | --- | --- |
| None | 0 | Data is not collected at all. |
| Last | 1 | Only the most recent values are collected. |
| List | 2 | Every new value is appended to a flat list. |
| Layered | 3 | New values are all collected but kept separate by prefixing their paths with unique elements. |