kean

public protocol LayoutItem { // `UIView`, `UILayoutGuide`
    var superview: UIView? { get }
}

extension UIView: LayoutItem {}
extension UILayoutGuide: LayoutItem {
    public var superview: UIView? { owningView }
}

public struct Alignment {

natpenguin

import SwiftUI

struct SpreadsheetView<ColumnView: View, RowView: View, ContentView: View, Column: Hashable, Row: Hashable>: View {
    init(
        columns: [Column],
        rows: [Row],
        columnWidth: CGFloat,
        columnHeight: CGFloat,
        rowWidth: CGFloat,
        rowHeight: CGFloat,