---
title: "init(_:)"
framework: Swift
role: symbol
role_heading: Initializer
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+, watchOS 27.0+]
path: "swift/mutableref/init(_:)"
---

# init(_:)

Initializes an instance of MutableRef with the given mutable value. This creates a mutable reference to that value preventing writes to the original value while this mutable reference is still active.

## Declaration

```swift
init(_ value: inout Value)
```