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uncle_agrey @lemmy.ml
Posts 3
Comments 1

Rust Day 6 solution, I feel like a god rn

I messed around in desmos for like 20 mins trying to find an algebraic solution to day 6 and made this. I feel as if this is the best way to solve the problem by graphing f(x) = (x-max_time/2)^2. Finding its y-intercept, finding its vertex (max_time/2) and then finding the minimum x needed to get the max distance by solving for max_distance = f(x).

```rust fn main() { let mut raw_input = include_str!("input.txt") .lines() .map(|f| {

f.split_ascii_whitespace() .skip(1) .collect::<String>() .parse::<usize>() .unwrap()

//for part 1, first parse then collect to a Vec<&str>

}) ;

let max_time = raw_input.next().unwrap(); let max_distance = raw_input.next().unwrap();

print!("{}", determine_range(max_time, max_distance));

//let max_times = raw_input.next().unwrap(); //let max_distances = raw_input.next().unwrap();

// let races = (0..max_times.len()).map(|i| { // determine_range(max_times[i], max_distances[i]) // });

// let total = races.reduce(|acc,x| x*acc).unwrap(); }

fn determine_range(max_time: usize, max_dist: usize) -> f64 { let vertex = max_time as f64/2.0; let min_y = vertex * vertex - max_dist as f64; let min_x = vertex - min_y.sqrt()+ 0.001;

let mut res = 2.0 * ( (vertex-0.001).floor() - min_x.ceil() + 1.0); if vertex.fract() == 0.0 { res+=1.0; } res } ```

1

how to turn events on and off in Javascript

Hello, so I am experiencing a problem in my javascript app where I cannot stop a user spamming a button. The app is used to draw three random numbers from a range. when a button is clicked, a number is drawn and a special animation plays, then the next number can be drawn. I am having trouble preventing the user from spamming the draw button. So far I have tried using a local variable called enabled which is set to false when the animation is playing and checked to be true before the actual animation function executes (its set back to false after it executes). I have also tried to remove and add the event listener of the button dynamically when it is pressed. Is there any way you guys think I can solve the issue? Thank you. The code should be in an image with the post.

7

Rust Rodio audio playback

Hello, I really need help figuring out Rodio audio playback for a rust project. I need to play a short audio clip of a casino wheel turning a certain amount of times in a loop. When I run the main function, the program plays the audio clip once and then stops completely. If anybody who has used Rodio can give me help it would be greatly appreciated. Also, I have tried using a longer duration in the play_sound function but it doesn't change anything. Thank you

3