weavatrix-git 0.3.1

Fast, bounded, evidence-carrying Git reader with an optional read-only MCP server
Documentation 
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pub(crate) fn map_slice<T, R, F>(input: &[T], function: F) -> Vec<R>
where
    T: Copy + Sync,
    R: Send,
    F: Fn(T) -> R + Sync,
{
    if input.len() < 2 {
        return input.iter().copied().map(function).collect();
    }
    let workers = std::thread::available_parallelism()
        .map_or(1, std::num::NonZeroUsize::get)
        .min(input.len());
    if workers == 1 {
        return input.iter().copied().map(function).collect();
    }
    let chunk_size = input.len().div_ceil(workers);
    std::thread::scope(|scope| {
        let handles = input
            .chunks(chunk_size)
            .map(|chunk| {
                let function = &function;
                scope.spawn(move || chunk.iter().copied().map(function).collect::<Vec<_>>())
            })
            .collect::<Vec<_>>();
        handles
            .into_iter()
            .flat_map(|handle| handle.join().expect("parallel repository worker panicked"))
            .collect()
    })
}

#[cfg(test)]
mod tests {
    use super::map_slice;

    #[test]
    fn preserves_input_order() {
        assert_eq!(map_slice(&[3, 1, 2], |value| value * 2), [6, 2, 4]);
        assert!(map_slice::<u8, u8, _>(&[], |value| value).is_empty());
    }
}