Rust Brain Teasers

Puzzle 12

Amnesia

amnesia/src/main.rs

fn main() {
    loop {
        let buffer = (0..1000).collect::<Vec<u32>>();
        std::mem::forget(buffer);
        print!(".");
    }
}

Guess the Output
	Try to guess what the output is before moving to the next page.

The program will display the following output, forever:

.

Discussion

The program running endlessly isn’t surprising since the program loops forever without a break to stop the loop. The surprise comes ...