---
title: ALAssetsGroupEnumerationResultsBlock
framework: assetslibrary
role: symbol
role_heading: Type Alias
path: assetslibrary/alassetsgroupenumerationresultsblock
---

# ALAssetsGroupEnumerationResultsBlock

Signature for the block executed during enumeration of assets.

## Declaration

```occ
typedef void (^)(ALAsset *, unsigned long, _Bool *) ALAssetsGroupEnumerationResultsBlock;
```

## Discussion

Discussion The block takes the following arguments: If no asset is found, index is set to NSNotFound. The value is set to true if no asset is found. If the application is not given access to the data, result is nil, index is NSNotFound, and stop points to true.

## See Also

### Constants

- [Group Property Names](assetslibrary/group-property-names.md)