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[Array+removeRandom] #extension #iOS
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// | |
// Array+removeRandom.swift | |
// | |
// Created by Jay Lee on 31/01/2019. | |
// Copyright © 2019 Jay Lee <jaeho.lee@snu.ac.kr> | |
// This work is free. You can redistribute it and/or modify it under the | |
// terms of the Do What The Fuck You Want To Public License, Version 2, | |
// as published by Sam Hocevar. See http://www.wtfpl.net/ for more details. | |
// | |
import Foundation | |
extension Array { | |
mutating func removeRandom() -> Element? { | |
if count > 0 { | |
let randomIndex = Int.random(in: 0 ..< count) | |
return remove(at: randomIndex) | |
} else { | |
return nil | |
} | |
} | |
} |
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