Mastering Rust - Second Edition

Accessing data from threads

A thread that doesn't communicate or access data from the parent thread is not much. Let's take a very common pattern of using multiple threads to concurrently access items in a list to perform some computation. Consider the following code:

// thread_read.rsuse std::thread;fn main() {    let nums = vec![0, 1, 2, 3, 4];    for n in 0..5 {        thread::spawn(|| {            println!("{}", nums[n]);        });    }}

In the preceding code, we have 5 numbers in values and we spawn 5 threads where each one of them accesses the data in values. Let's compile this program:

Interesting ! The error makes sense if you think about it from a borrowing perspective. ...