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Prefer using Ars instead of Options
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parent
8cb5e7437d
commit
3843240940
@ -1,18 +1,21 @@
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use std::sync::Arc;
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use crossbeam_channel::{Receiver, Sender, TryRecvError};
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use rayon::iter::{MapInit, ParallelIterator};
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pub trait ParallelIteratorExt: ParallelIterator {
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/// A method on a parallel iterator to map
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fn try_map_try_init<F, INIT, T, E, R>(
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self,
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init: INIT,
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map_op: F,
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) -> MapInit<
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Self,
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impl Fn() -> Result<T, Option<E>> + Sync + Send + Clone,
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impl Fn(&mut Result<T, Option<E>>, Self::Item) -> Result<R, Option<E>> + Sync + Send + Clone,
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impl Fn() -> Result<T, Arc<E>> + Sync + Send + Clone,
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impl Fn(&mut Result<T, Arc<E>>, Self::Item) -> Result<R, Arc<E>> + Sync + Send + Clone,
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>
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where
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E: Send,
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E: Send + Sync,
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F: Fn(&mut T, Self::Item) -> Result<R, E> + Sync + Send + Clone,
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INIT: Fn() -> Result<T, E> + Sync + Send + Clone,
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R: Send,
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@ -20,11 +23,11 @@ pub trait ParallelIteratorExt: ParallelIterator {
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self.map_init(
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move || match init() {
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Ok(t) => Ok(t),
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Err(err) => Err(Some(err)),
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Err(err) => Err(Arc::new(err)),
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},
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move |maybe_t, item| match maybe_t {
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Ok(t) => map_op(t, item).map_err(Some),
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Err(maybe_err) => Err(maybe_err.take()),
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Ok(t) => map_op(t, item).map_err(Arc::new),
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Err(maybe_err) => Err(maybe_err.clone()),
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},
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)
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}
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