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📜  swift out of bound elelemnt - Swift 代码示例

📅  最后修改于: 2022-03-11 15:01:02.939000             🧑  作者: Mango

代码示例1
extension Collection {
    subscript(safe index: Index) -> Element? {
        return indices.contains(index) ? self[index] : nil
    }
}