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# CFErrorCopyUserInfo(_:)

Returns the user info dictionary for a given CFError.

```
func CFErrorCopyUserInfo(_ err: CFError!) -> CFDictionary!
```

## Parameters

`err`

The error to examine. If this is not a valid CFError, the behavior is undefined.

## Return Value

A dictionary containing the same keys and values as in the userInfo dictionary `err` was created with. Returns an empty dictionary if `NULL` was supplied to the create function. Ownership follows the [The Create Rule](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html#//apple_ref/doc/uid/20001148-103029).

## Discussion

---

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