# alignmentGuide(_:computeValue:) Sets the view’s horizontal alignment. ``` @preconcurrency nonisolated func alignmentGuide(_ g: HorizontalAlignment, computeValue: @escaping @Sendable (ViewDimensions) -> CGFloat) -> some View ``` ## Parameters `g` A `HorizontalAlignment` value at which to base the offset. `computeValue` A closure that returns the offset value to apply to this view. ## Return Value A view modified with respect to its horizontal alignment according to the computation performed in the method’s closure. ## Discussion Use `alignmentGuide(_:computeValue:)` to calculate specific offsets to reposition views in relationship to one another. You can return a constant or can use the `ViewDimensions` argument to the closure to calculate a return value. In the example below, the `HStack` is offset by a constant of 50 points to the right of center: ``` VStack { Text("Today's Weather") .font(.title) .border(.gray) HStack { Text("🌧") Text("Rain & Thunderstorms") Text("⛈") } .alignmentGuide(HorizontalAlignment.center) { _ in 50 } .border(.gray) } .border(.gray) ``` Changing the alignment of one view may have effects on surrounding views. Here the offset values inside a stack and its contained views is the difference of their absolute offsets.  --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)