CODEWITHSUNDEEP
swiftui
Marc Enschede
Marc Enschede

Reputation: 898

How to select an item conditionally in a ForEach element?

In SwiftUI I want to show the favourite items only and I'm trying to do this with an if statement within the ForEach-element. See the code:

    var body: some View {
    NavigationView {
        List {
            Toggle(isOn: $showFavoritesOnly) {
                Text("Favorites only")
            }

            ForEach(self.buildings, id: \.self) { building in
                if(!self.showFavoritesOnly || building.favourite) {
                    Text("Blah")
                }
            }
        }
    }
}

However I getting a 'Unable to infer complex closure return type; add explicit type to disambiguate' error.

How can I select an item conditionally in a ForEach element?

Upvotes: 0

Views: 737

Answers (1)

Marc Enschede
Marc Enschede

Reputation: 898

Using a filter is a working solution

    var body: some View {
    NavigationView {
        List {
            Toggle(isOn: $showFavoritesOnly) {
                Text("Favorites only")
            }

            ForEach(self.buildings.filter({b in self.showFavoritesOnly || b.favourite}), id: \.self) { building in
                Text("Blah")
            }
        }
    }

Still, I wonder how could I have fixed it using an if-statement

Upvotes: 2

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