Correction to Majid's sizeThatFits implementation in https://swiftwithmajid.com/2022/11/16/building-custom-layout-in-swiftui-basics

sizeThatFits.swift

struct FlowLayout: Layout {
  func sizeThatFits(proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) -> CGSize {
    let sizes = subviews.map { $0.sizeThatFits(.unspecified) }

    var totalHeight: CGFloat = 0
    var totalWidth: CGFloat = 0

    var lineWidth: CGFloat = 0
    var lineHeight: CGFloat = 0

    for size in sizes {
      if lineWidth + size.width > proposedSize.width {
        totalHeight += lineHeight
        lineWidth = size.width
        lineHeight = size.height
      } else {
        lineWidth += size.width
        lineHeight = max(lineHeight, size.height)
      }

      totalWidth = max(totalWidth, lineWidth)
    }

    totalHeight += lineHeight

    return .init(width: totalWidth, height: totalHeight)
  }
}