denis-obukhov

struct EquatablePack<each V: Equatable>: Equatable {
    let value: (repeat each V)
    
    init(_ value: repeat each V) {
        self.value = (repeat each value)
    }
    
    static func == (lhs: Self, rhs: Self) -> Bool {
        func throwIfNotEqual<T: Equatable>(_ lhs: T, _ rhs: T) throws {
            guard lhs == rhs else { throw CancellationError() }

denis-obukhov

import SwiftUI
import UIKit

struct PageView<Page: View, T: Identifiable>: UIViewControllerRepresentable {
    private class ModelViewController: UIHostingController<Page?> {
        var id: T.ID?
        
        init(id: T.ID?, rootView: Page?) {
            self.id = id
            super.init(rootView: rootView)

denis-obukhov

struct GeometryReaderApproach: View {
    private let values: [Double] = [152, 355, 475, 78, 173, 295]
    private let maxValue: Double
    
    init() { maxValue = values.max() ?? 0 }
    
    var body: some View {
        VStack {
            let data = Array(zip(values.indices, values))
            // Why not use .enumerated? Well, in general it's is not necessarily the index of the paired value.

denis-obukhov

import SwiftUI

// Use Case: collect actions to perform menu commands
// 
// Issue: Storing DetailsView context ( "isTakingSnapshot = true" ) leads to a memory leak
//        All view associated memory storage doesn't get deallocated even though a view itself no longer exist
// Solution: move stored context to ViewModel and capture it as a weak reference

// MARK: - App

denis-obukhov

/*
Collection view with UICollectionViewCompositionalLayout 
resets section's content offset on vertical scroll
if visibleItemsInvalidationHandler is set.

Even if it's empty
*/

import UIKit