如何在Swift中为随机数生成器播种? [英] How does one seed the random number generator in Swift?

问题描述

我的应用使用随机数.我想播种随机数生成器，以便每次都不相同.我该怎么做呢?

My app uses random numbers. I would like to seed the random number generator so that it won't be the same every time. How might I go about doing this?

我应该给srand()哪个参数来为当前时间的随机生成器提供种子?

What parameter do I give srand() to seed the random generator with the current time?

推荐答案

这有效:

let time = UInt32(NSDate().timeIntervalSinceReferenceDate)
srand(time)
print("Random number: \(rand()%10)")

这篇关于如何在Swift中为随机数生成器播种?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！