arc4random_uniform に値を渡す時はUInt32とかで変換をするといいらしい - Qiita
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swift - arc4random() and arc4random_uniform() not really random? - Stack Overflow
How to generate random numbers in Swift – Hacking with Swift
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swift - arc4random() and arc4random_uniform() not really random? - Stack Overflow
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プロトコル指向に想う世界観 #__swift__
![iOS Notes 41: How to generate 4-digit random number in Swift 3 & 5? [Updated] | by Kuray Ogun | FreakyCoder Software Blog](https://miro.medium.com/max/1400/1*H1kNqdISm35h9oSvYnkeyA.jpeg "iOS Notes 41: How to generate 4-digit random number in Swift 3 & 5? [Updated] | by Kuray Ogun | FreakyCoder Software Blog")
iOS Notes 41: How to generate 4-digit random number in Swift 3 & 5? [Updated] | by Kuray Ogun | FreakyCoder Software Blog
Swift arc4random_uniform随机数写A和B比赛掷筛子，看谁三连胜，结果每次都是B三连胜
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How to generate random number in Swift ~ Swift Anytime
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Swift 4 的Int 和UInt32 終於可以比較了. 本是同根生，相煎何太急。在Swift 3，Int 和UInt32… | by 彼得潘的iOS App Neverland | Medium
How To Make an iPhone App - Ep 12 - Creating Random Numbers in Swift (Xcode 8, Swift 3, iOS 10) - YouTube
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Random numbers in Swift: wherefore art thou arc4random_uniform (Xcode 7.1.1, iOS; update with info on SecRandomCopyBytes; update Xcode 8 beta 6, Swift 3)
