Examples projects using SwiftUI & Combine.
Include Layout, UI, Animations, Gestures, Draw and Data. See projects files in Examples folder. If you have project, make a pull request or create issue with link to repo.

Interested in UI and animations in UIKit?
See awesome-ios-ui pack with UI elements:

If you like the project, do not forget to put star ★

• Animatable Cards
• Area to Card

• Transition And Blur
• 2048 Game
• SFSymbols
• Calculator
• Creating And Combining Views
• Building Lists And Navigation
• Handling User Input
• WWDCPlayer
• Composing Complex Interfaces
• Working With UIControls
• Example To-Do App
• iPadOS Scenes
• Combine using GitHub API
• Async image loading
• Interfacing With UIKit
• GitHub Search
• Time Travel
• Drawing Paths And Shapes
• Animating Views And Transitions
• Jike
• Flux
• SwiftUI Download Progress View
• PureGenius
• SwiftUI SideMenu
• SwiftUI Currency App

Also include:

• Movie
• InstaFake
• TempusRomanumII
• SwiftUI + Redux
• React Meets SwiftUI
• Webview
• UINote
• SplitView
• Card Animation

In class add property:

@GestureState var dragState = DragState.inactive

Class DragState see in file. Also you can see it in apple's example page.

To card add gester and offset:

.offset(
    x: dragState.translation.width,
    y: dragState.translation.height
)
.gesture(dragGester)

For add 3D rotation for back cards use code:

.rotation3DEffect(Angle(degrees: dragState.isActive ? 0 : 60), axis: (x: 10.0, y: 10.0, z: 10.0))

For medium card use 30 angles.

In preview I am use Spring animation for all cards:

.animation(.spring())

For button using SFSymbols pack with ready-use icons. Also support customisable weight:

Image(systemName: show ? "slash.circle.fill" : "slash.circle")
   .font(Font.title.weight(.semibold))

For change state using @State as property:

@State var show = false

Size of area attach to state of property show:

.frame(width: show ? 350 : 290, height: show ? 420 : 260)

Source

Thanks for Jinxiansen, ra1028, timdonnelly, TwoLivesLeft, devxoul, cmtrounce, unixzii, ra1028 for examples project.