有没有一种方法可以让Swift 4.2随机数生成器成为种子 [英] Is there're a way to seed Swift 4.2 random number generator

问题描述

我喜欢新的Swift 4.2 RandomNumberGenerator，但是我看不到有种子的可能性.我是否缺少某些东西，或者是否有可能通过调用底层低级函数来播种这些生成器?我有很多代码，它们在默认数字类型上使用默认数字生成器，现在我需要确保每次启动之间的行为完全相同，并且代码更改应尽可能少.

I like the new Swift 4.2 RandomNumberGenerator thing, but I don't see a seed possibility there. Am I missing something, or is there any way at all to seed these generators, by maybe calling an underlying low-level function? I have a lot of code, which uses default number generators on default number types, and I now need to make sure that everything behaves exactly the same between launches with as little code changes as possible.

推荐答案

新架构的整体思想是，只要采用RandomNumberGenerator协议，任何生成器都可以被替换.因此，如果您需要可重复的种子，请使用自己的随机生成器算法.

The whole idea of the new architecture is that any generator can be substituted just by adopting the RandomNumberGenerator protocol. So if you need a repeatable seed, use your own random generator algorithm.

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