Function tao_of_rust::ch11::rayon::rayon

pub fn rayon()

Rayon并行迭代器

Basic usage: 并行迭代器

extern crate rayon;
use rayon::prelude::*;
fn sum_of_squares(input: &[i32]) -> i32 {
    input.par_iter().map(|&i| i * i).sum()
}
fn increment_all(input: &mut [i32]) {
    input.par_iter_mut().for_each(|p| *p += 1);
}
fn main(){
   let v = [1,2,3,4,5,6,7,8,9,10];
   let r = sum_of_squares(&v);
   println!("{}", r);
   let mut v = [1,2,3,4,5,6,7,8,9,10];
   increment_all(&mut v);
   println!("{:?}", v);
}

Basic usage: 使用Rayon提供的join

extern crate rayon;
fn fib(n: u32) -> u32 {
    if n < 2 { return n; }
    let (a, b) = rayon::join(
        || fib(n - 1), || fib(n - 2)
    );
    a + b
}
fn main() {
    let r = fib(32);
    assert_eq!(r, 2178309);
}