SectionedFetchResults.Section

struct · iOS 15.0+ · SDK 27.1

@MainActor @preconcurrency struct Section

A collection of fetched results that share a specified identifier. Examine a `Section` instance to find the entities that satisfy a ``SectionedFetchRequest`` predicate, and that have a particular property with the value stored in the section's ``id-swift.property-1h7qm`` parameter. You specify which property by setting the fetch request's `sectionIdentifier` parameter during initialization, or by modifying the corresponding ``SectionedFetchResults`` instance's ``SectionedFetchResults/sectionIdentifier`` property. Obtain specific sections by treating the fetch results as a collection. For example, consider the following property declaration that fetches `Quake` managed objects that the <doc://com.apple.documentation/documentation/SwiftUI/Loading-and-displaying-a-large-data-feed> sample code project defines to store earthquake data: @SectionedFetchRequest<String, Quake>( sectionIdentifier: \.day, sortDescriptors: [SortDescriptor(\.time, order: .reverse)] ) private var quakes: SectionedFetchResults<String, Quake> Get the first section using a subscript: let firstSection = quakes[0] Alternatively, you can loop over the sections to create a list of sections. ForEach(quakes) { section in Text("Section \(section.id) has \(section.count) elements") } The sections also act as collections, which means you can use elements like the <doc://com.apple.documentation/documentation/Swift/Collection/count-4l4qk> property in the example above.

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