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# getBytes(_:range:)

Copies a range of bytes from the data object into a given buffer.

```
func getBytes(_ buffer: UnsafeMutableRawPointer, range: NSRange)
```

## Parameters

`buffer`

A buffer into which to copy data.

`range`

The range of bytes in the receiver’s data to copy to `buffer`. The range must lie within the range of bytes of the receiver’s data.

## Discussion

If `range` isn’t within the receiver’s range of bytes, an [`rangeException`](/documentation/Foundation/NSExceptionName/rangeException) is raised.

## See Also

[`description`](/documentation/Foundation/NSData/description)

A string that contains a hexadecimal representation of the data object’s contents in a property list format.


---

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