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Explicitly implement Clone for Antichain #419

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Sep 10, 2021
Merged

Explicitly implement Clone for Antichain #419

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11 changes: 10 additions & 1 deletion timely/src/progress/frontier.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ use crate::order::PartialOrder;
/// Two antichains are equal if the contain the same set of elements, even if in different orders.
/// This can make equality testing quadratic, though linear in the common case that the sequences
/// are identical.
#[derive(Clone, Debug, Default, Abomonation, Serialize, Deserialize)]
#[derive(Debug, Default, Abomonation, Serialize, Deserialize)]
pub struct Antichain<T> {
elements: Vec<T>
}
Expand Down Expand Up @@ -218,6 +218,15 @@ impl<T: PartialOrder> PartialOrder for Antichain<T> {
}
}

impl<T: Clone> Clone for Antichain<T> {
fn clone(&self) -> Self {
Antichain { elements: self.elements.clone() }
}
fn clone_from(&mut self, source: &Self) {
self.elements.clone_from(&source.elements)
}
}

impl<T: PartialOrder> From<Vec<T>> for Antichain<T> {
fn from(vec: Vec<T>) -> Self {
// TODO: We could reuse `vec` with some care.
Expand Down