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# contents()

Gets the system address of the buffer’s storage allocation.

```
func contents() -> UnsafeMutableRawPointer
```

## Return Value

A pointer to the shared copy of the buffer data, or `NULL` for buffers allocated with a private resource storage mode ([`MTLStorageMode.private`](/documentation/Metal/MTLStorageMode/private)).

## Discussion

Private resources aren’t CPU-accessible.

---

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