Prototyping SwiftUI utilities

Sources/ForEachSection.swift

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+//
+//  ForEachSection.swift
+//  CoreStore
+//
+//  Created by John Rommel Estropia on 2021/02/13.
+//  Copyright © 2021 John Rommel Estropia. All rights reserved.
+//
+
+#if canImport(Combine) && canImport(SwiftUI)
+
+import Combine
+import SwiftUI
+
+
+// MARK: - ForEachSection
+
+@available(iOS 13.0, tvOS 13.0, watchOS 6.0, macOS 10.15, *)
+public struct ForEachSection<Object: DynamicObject, Sections: View>: View {
+    
+    // MARK: Internal
+    
+    public init(
+        in listSnapshot: LiveList<Object>.Items,
+        @ViewBuilder sections: @escaping (
+            _ sectionID: ListSnapshot<Object>.SectionID,
+            _ objects: [ObjectPublisher<Object>]
+        ) -> Sections
+    ) {
+        
+        self.listSnapshot = listSnapshot
+        self.sections = sections
+    }
+    
+    
+    // MARK: View
+    
+    public var body: some View {
+        
+        ForEach(self.listSnapshot.sectionIDs, id: \.self) { sectionID in
+            
+            self.sections(
+                sectionID,
+                self.listSnapshot.items(inSectionWithID: sectionID)
+            )
+        }
+    }
+    
+    
+    // MARK: Private
+    
+    private let listSnapshot: LiveList<Object>.Items
+    
+    private let sections: (
+        _ sectionID: ListSnapshot<Object>.SectionID,
+        _ objects: [ObjectPublisher<Object>]
+    ) -> Sections
+}
+
+#endif