/// An iterator adaptor that may join together adjacent elements. /// /// See [`.coalesce()`](crate::Itertools::coalesce) for more information. pubtype Coalesce<I, F> = CoalesceBy<I, F, <I as Iterator>::Item>;
/// Create a new `Coalesce`. pubfn coalesce<I, F>(mut iter: I, f: F) -> Coalesce<I, F> where
I: Iterator,
{
Coalesce {
last: iter.next(),
iter,
f,
}
}
/// An iterator adaptor that removes repeated duplicates, determining equality using a comparison function. /// /// See [`.dedup_by()`](crate::Itertools::dedup_by) or [`.dedup()`](crate::Itertools::dedup) for more information. pubtype DedupBy<I, Pred> = CoalesceBy<I, DedupPred2CoalescePred<Pred>, <I as Iterator>::Item>;
impl<T: PartialEq> DedupPredicate<T> for DedupEq { fn dedup_pair(&mutself, a: &T, b: &T) -> bool {
a == b
}
}
impl<T, F: FnMut(&T, &T) -> bool> DedupPredicate<T> for F { fn dedup_pair(&mutself, a: &T, b: &T) -> bool { self(a, b)
}
}
/// Create a new `DedupBy`. pubfn dedup_by<I, Pred>(mut iter: I, dedup_pred: Pred) -> DedupBy<I, Pred> where
I: Iterator,
{
DedupBy {
last: iter.next(),
iter,
f: DedupPred2CoalescePred(dedup_pred),
}
}
/// An iterator adaptor that removes repeated duplicates. /// /// See [`.dedup()`](crate::Itertools::dedup) for more information. pubtype Dedup<I> = DedupBy<I, DedupEq>;
/// Create a new `Dedup`. pubfn dedup<I>(iter: I) -> Dedup<I> where
I: Iterator,
{
dedup_by(iter, DedupEq)
}
/// An iterator adaptor that removes repeated duplicates, while keeping a count of how many /// repeated elements were present. This will determine equality using a comparison function. /// /// See [`.dedup_by_with_count()`](crate::Itertools::dedup_by_with_count) or /// [`.dedup_with_count()`](crate::Itertools::dedup_with_count) for more information. pubtype DedupByWithCount<I, Pred> =
CoalesceBy<I, DedupPredWithCount2CoalescePred<Pred>, (usize, <I as Iterator>::Item)>;
/// An iterator adaptor that removes repeated duplicates, while keeping a count of how many /// repeated elements were present. /// /// See [`.dedup_with_count()`](crate::Itertools::dedup_with_count) for more information. pubtype DedupWithCount<I> = DedupByWithCount<I, DedupEq>;
/// Create a new `DedupByWithCount`. pubfn dedup_by_with_count<I, Pred>(mut iter: I, dedup_pred: Pred) -> DedupByWithCount<I, Pred> where
I: Iterator,
{
DedupByWithCount {
last: iter.next().map(|v| (1, v)),
iter,
f: DedupPredWithCount2CoalescePred(dedup_pred),
}
}
/// Create a new `DedupWithCount`. pubfn dedup_with_count<I>(iter: I) -> DedupWithCount<I> where
I: Iterator,
{
dedup_by_with_count(iter, DedupEq)
}
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