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# CFUUIDCreateFromString(_:_:)

Creates a CFUUID object for a specified string.

```
func CFUUIDCreateFromString(_ alloc: CFAllocator!, _ uuidStr: CFString!) -> CFUUID!
```

## Parameters

`alloc`

The allocator to use to allocate memory for the new CFUUID object. Pass `NULL` or [`kCFAllocatorDefault`](/documentation/CoreFoundation/kCFAllocatorDefault) to use the current default allocator.

`uuidStr`

A string containing a UUID. The standard format for UUIDs represented in ASCII is a string punctuated by hyphens, for example `68753A44-4D6F-1226-9C60-0050E4C00067`.

## Return Value

A new CFUUID object, or if a CFUUID object of the same value already exists, the existing instance with its reference count incremented. 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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