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add collection safe subscript for index out of bound safety

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Hedden, Kyle Matthew 2024-01-02 17:10:46 -05:00
parent 7e02aa17b6
commit 6d169ea203
2 changed files with 20 additions and 0 deletions
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4
MVMCore/MVMCore.xcodeproj/project.pbxproj
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@ -41,6 +41,7 @@
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@ -408,6 +410,7 @@
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5846ABF42B44BB9000FA6C76 /* Collection+Safe.swift in Sources */,
AF69D4F7286EA0B800BC6862 /* ActionPreviousSubmitHandler.swift in Sources */,
AF43A57C1FBA5E6A008E9347 /* MVMCoreHardcodedStringsConstants.m in Sources */,
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16
MVMCore/MVMCore/Categories/Collection+Safe.swift Normal file
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@ -0,0 +1,16 @@
//
// Collection+Safe.swift
// MVMCore
//
// Created by Kyle on 2/13/20.
// Copyright © 2020 Verizon Wireless. All rights reserved.
//
import Foundation
public extension Collection {
/// Returns the element at the specified index if it is within bounds, otherwise nil.
subscript (safe index: Index) -> Element? {
return indices.contains(index) ? self[index] : nil
}
}