feat:exercises

Author: build

exercises/smart_pointers/arc1.rs

@@ -31,50 +31,7 @@ fn main() {
     let mut joinhandles = Vec::new();
 
     for offset in 0..8 {
-        let child_numbers =  Arc::clone(&shared_numbers);
-        joinhandles.push(thread::spawn(move || {
-            let sum: u32 = child_numbers.iter().filter(|&&n| n % 8 == offset).sum();
-            println!("Sum of offset {} is {}", offset, sum);
-        }));
-    }
-    for handle in joinhandles.into_iter() {
-        handle.join().unwrap();
-    }
-}
-// arc1.rs
-//
-// In this exercise, we are given a Vec of u32 called "numbers" with values
-// ranging from 0 to 99 -- [ 0, 1, 2, ..., 98, 99 ] We would like to use this
-// set of numbers within 8 different threads simultaneously. Each thread is
-// going to get the sum of every eighth value, with an offset.
-//
-// The first thread (offset 0), will sum 0, 8, 16, ...
-// The second thread (offset 1), will sum 1, 9, 17, ...
-// The third thread (offset 2), will sum 2, 10, 18, ...
-// ...
-// The eighth thread (offset 7), will sum 7, 15, 23, ...
-//
-// Because we are using threads, our values need to be thread-safe.  Therefore,
-// we are using Arc.  We need to make a change in each of the two TODOs.
-//
-// Make this code compile by filling in a value for `shared_numbers` where the
-// first TODO comment is, and create an initial binding for `child_numbers`
-// where the second TODO comment is. Try not to create any copies of the
-// `numbers` Vec!
-//
-// Execute `rustlings hint arc1` or use the `hint` watch subcommand for a hint.
-
-#![forbid(unused_imports)] // Do not change this, (or the next) line.
-use std::sync::Arc;
-use std::thread;
-
-fn main() {
-    let numbers: Vec<_> = (0..100u32).collect();
-    let shared_numbers = Arc::new(numbers);
-    let mut joinhandles = Vec::new();
-
-    for offset in 0..8 {
-        let child_numbers =  Arc::clone(&shared_numbers);
+        let child_numbers = Arc::clone(&shared_numbers);
         joinhandles.push(thread::spawn(move || {
             let sum: u32 = child_numbers.iter().filter(|&&n| n % 8 == offset).sum();
             println!("Sum of offset {} is {}", offset, sum);