List, ForEach and lazy grids

List shows scrolling rows with the platform's standard look. Like other lazy lists, it creates rows only as they appear. ForEach makes views from a collection, and each item needs a stable identity.

Either the item conforms to Identifiable with an id property, or you pass id: \.someProperty. Stable ids let SwiftUI animate items being added and removed, and keep the right state on each row. Use Section for grouped lists and .swipeActions for delete or archive.

For custom layouts, LazyVStack and LazyVGrid inside a ScrollView build items only when needed. AsyncImage loads remote images with a placeholder, but does little caching.