9bdb0a12e4
Hints are now accessible using the CLI subcommand `rustlings hint <exercise name`. BREAKING CHANGE: This fundamentally changes the way people interact with exercises.
30 lines
864 B
Rust
30 lines
864 B
Rust
// threads1.rs
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// Make this compile! Execute `rustlings hint threads1` for hints :)
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// The idea is the thread spawned on line 19 is completing jobs while the main thread is
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// monitoring progress until 10 jobs are completed. If you see 6 lines
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// of "waiting..." and the program ends without timing out when running,
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// you've got it :)
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use std::sync::Arc;
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use std::thread;
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use std::time::Duration;
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struct JobStatus {
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jobs_completed: u32,
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}
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fn main() {
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let status = Arc::new(JobStatus { jobs_completed: 0 });
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let status_shared = status.clone();
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thread::spawn(move || {
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for _ in 0..10 {
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thread::sleep(Duration::from_millis(250));
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status_shared.jobs_completed += 1;
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}
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});
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while status.jobs_completed < 10 {
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println!("waiting... ");
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thread::sleep(Duration::from_millis(500));
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}
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}
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