---
title: "subscript(_:)"
framework: coremedia
role: symbol
role_heading: Instance Subscript
path: "coremedia/cmreadonlydatablockbuffer/subscript(_:)-759gz"
---

# subscript(_:)

Creates a new block buffer that references a subrange of this block buffer.

## Declaration

```swift
subscript(range: Range<CMReadOnlyDataBlockBuffer.Index>) -> CMReadOnlyDataBlockBuffer { get }
```