LePips

// Use to create an Array of elements in a result builder
//
// Best used with a typealias:
// typealias StringBuilder = ArrayBuilder<String>

@resultBuilder
public struct ArrayBuilder<Element> {

    public static func buildBlock(_ components: [Element]...) -> [Element] {
        components.flatMap { $0 }

LePips

struct NavBarDrawerButtonsModifier<Buttons: View>: ViewModifier {

    let buttons: () -> Buttons

    init(@ViewBuilder buttons: @escaping () -> Buttons) {
        self.buttons = buttons
    }

    func body(content: Content) -> some View {
        NavBarDrawerButtonsView {

LePips

// Assumes usage of:
//  - https://gist.github.com/LePips/3640ad0cd9b6e2ceb407e9d0e9e32b5c
//  - https://gist.github.com/LePips/5c6b4546e9bd8f91c029f705347be974
//
// Last gist not required, but nice to have for headers.

struct BackgroundParallaxHeaderModifier<Header: View>: ViewModifier {

    @Binding
    var scrollViewOffset: CGFloat

LePips

// Assumes usage of: 
//  - https://gist.github.com/LePips/3640ad0cd9b6e2ceb407e9d0e9e32b5c

// Embedding view for content
struct NavBarOffsetView<Content: View>: UIViewControllerRepresentable {
    
    @Binding
    private var scrollViewOffset: CGFloat
    
    private let start: CGFloat

LePips

// https://github.com/siteline/SwiftUI-Introspect
import Introspect

struct ScrollViewOffsetModifier: ViewModifier {
    
    @Binding
    var scrollViewOffset: CGFloat
    
    private let scrollViewDelegate: ScrollViewDelegate?