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20 lines
763 B
Swift
20 lines
763 B
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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extension Array {
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/// Returns the element at the specified index if it is within the Array's
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/// bounds, otherwise `nil`.
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public subscript(safe index: Index) -> Element? {
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return index >= 0 && index < count ? self[index] : nil
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}
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}
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