---
title: "replaceSubrange(_:repeating:)"
framework: coremedia
role: symbol
role_heading: Instance Method
path: "coremedia/cmmutabledatablockbuffer/replacesubrange(_:repeating:)"
---

# replaceSubrange(_:repeating:)

Fill a range in the buffer with given byte.

## Declaration

```swift
mutating func replaceSubrange(_ range: Range<Int>, repeating byte: UInt8)
```