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# init(bytes:length:)

Initializes a data object filled with a given number of bytes copied from a given buffer.

```
init(bytes: UnsafeRawPointer?, length: Int)
```

## Discussion

A data object initialized by adding to it `length` bytes of data copied from the buffer `bytes`. The returned object might be different than the original receiver.

## See Also

[`+  dataWithBytes:length:`](/documentation/Foundation/NSData/dataWithBytes:length:)

Creates a data object containing a given number of bytes copied from a given buffer.


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