---
title: didPerformFileOperationNotification
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsworkspace/didperformfileoperationnotification
---

# didPerformFileOperationNotification

Posted when a file operation has been performed in the receiving app.

## Declaration

```swift
class let didPerformFileOperationNotification: NSNotification.Name
```

## Discussion

Discussion The notification object is the shared NSWorkspace instance. The userInfo dictionary contains a key @"NSOperationNumber" with a NSNumber object containing an integer indicating the type of file operation