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39 lines
1.3 KiB
Swift
39 lines
1.3 KiB
Swift
//
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// Copyright 2021 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import SwiftUI
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/**
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Used to avoid crashes when enumerating through bindings in the AnswerOptions ForEach
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https://stackoverflow.com/q/65375372
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Replace with Swift 5.5 bindings enumerator later.
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*/
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struct SafeBindingCollectionEnumerator<T: RandomAccessCollection & MutableCollection, C: View>: View {
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typealias BoundElement = Binding<T.Element>
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private let binding: BoundElement
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private let content: (BoundElement) -> C
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init(_ binding: Binding<T>, index: T.Index, @ViewBuilder content: @escaping (BoundElement) -> C) {
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self.content = content
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self.binding = .init(get: { binding.wrappedValue[index] },
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set: { binding.wrappedValue[index] = $0 })
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}
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var body: some View {
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content(binding)
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}
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}
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