数组索引安全
extension Array {
subscript(safe index: Int ) -> Element? {
return indices.contains(index) ? self[index] : nil
}
}
资源来自网络和日常整理，持续更新
extension Array {
subscript(safe index: Int ) -> Element? {
return indices.contains(index) ? self[index] : nil
}
}
资源来自网络和日常整理，持续更新
数组索引安全 资源来自网络和日常整理，持续更新
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本文标题：Swift-Array Extension
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