plaidfinch

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i like emails: finch@plaidfinch.net age123456789pqc3kgk33jrca6vqlf7pl8me3vqzjqj7jf60qdm9l42sm5ffva λ □ · ν ○ · □ ◇ Δ ○﹕□ ( □ ○ → ○ ) → □ ○

a photograph of the Annotated United States Code, showing that it fills several bookshelves with its volumes

photograph of the Apollo lunar lander module sitting on the moon

$A function in the Rust programming language which takes a task and parallelizes it to all CPUs, returning a vector of the results of all tasks. I like how elegantly it is possible to write this function, and how useful it is despite its brevity! The source code is below: ``` fn parallel<T: Send>( task: impl FnMut(usize, usize) -> T + Clone + Send ) -> Vec<T> { use std::thread::{scope, ScopedJoinHandle}; scope(move |scope| { let total = num_cpus::get(); (0..total) .map(move |n| { let mut task = task.clone(); scope.spawn(move || task(n, total)) }) .collect::<Vec<_>>() .into_iter() .map(ScopedJoinHandle::join) .map(Result::unwrap) .collect::<Vec<_>>() }) } ```$