---
title: completionBlock
framework: coredata
role: symbol
role_heading: Instance Property
path: coredata/nsasynchronousfetchrequest/completionblock
---

# completionBlock

The block that is executed when the fetch request has completed.

## Declaration

```swift
var completionBlock: NSPersistentStoreAsynchronousFetchResultCompletionBlock? { get }
```

## See Also

### Preparing a Request

- [estimatedResultCount](coredata/nsasynchronousfetchrequest/estimatedresultcount.md)
- [fetchRequest](coredata/nsasynchronousfetchrequest/fetchrequest.md)