关于rust：如何从种子生成随机字节数组？

How to generate an array of random bytes from a seed?

本问题已经有最佳答案，请猛点这里访问。

我想从自定义随机数生成器生成UUID：

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use uuid::{Builder, Uuid, Variant, Version};
use rand::{Rng, SeedableRng, rngs::StdRng, RngCore};

fn main() {
let seed = [5u8; 32];
let mut rng: StdRng = SeedableRng::from_seed(seed);
let bytes = ???
let uuid = Builder::from_bytes(bytes)
.set_variant(Variant::RFC4122)
.set_version(Version::Random)
.build();
println!("{:?}", uuid);
}

如何获取字节？

我想我已经做到了。

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use rand::{rngs::StdRng, RngCore, SeedableRng};
use uuid::{Builder, Variant, Version};

fn main() {
let seed = [0u8; 32];
let mut rng: StdRng = SeedableRng::from_seed(seed);
let mut bytes = [0u8; 16];
rng.fill_bytes(&mut bytes);
let uuid = Builder::from_bytes(bytes)
.set_variant(Variant::RFC4122)
.set_version(Version::Random)
.build();
println!("{:?}", uuid);
}