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//! [`std::vec::Vec`] related extensions.
use std::cmp::Ordering;
/// Extension methods for [`std::vec::Vec`].
pub trait VecExt<T> {
/// Same behaviour as [`Vec::sort`][vec_sort],
/// but returns itself in a form consistent with chained calls.
///
/// [vec_sort]: std::vec::Vec#method.sort
fn sorted(self) -> Self
where
T: Ord;
/// Same behaviour as [`Vec::sort_by`][vec_sort_by],
/// but returns itself in a form consistent with chained calls.
///
/// [vec_sort_by]: std::vec::Vec#method.sort_by
fn sorted_by(self, compare: impl FnMut(&T, &T) -> Ordering) -> Self;
/// Same behaviour as [`Vec::sort_by_key`][vec_sort_by_key],
/// but returns itself in a form consistent with chained calls.
///
/// [vec_sort_by_key]: std::vec::Vec#method.sort_by_key
fn sorted_by_key<K>(self, f: impl FnMut(&T) -> K) -> Self
where
K: Ord;
/// Same behaviour as [`Vec::sort_by_cached_key`][vec_sort_by_cached_key],
/// but returns itself in a form consistent with chained calls.
///
/// [vec_sort_by_cached_key]: std::vec::Vec#method.sort_by_cached_key
fn sorted_by_cached_key<K>(self, f: impl FnMut(&T) -> K) -> Self
where
K: Ord;
/// Same behaviour as [`Vec::sort_unstable`][vec_sort_unstable],
/// but returns itself in a form consistent with chained calls.
///
/// [vec_sort_unstable]: std::vec::Vec#method.sort_unstable
fn sorted_unstable(self) -> Self
where
T: Ord;
/// Same behaviour as [`Vec::sort_unstable_by`][vec_sort_unstable_by],
/// but returns itself in a form consistent with chained calls.
///
/// [vec_sort_unstable_by]: std::vec::Vec#method.sort_unstable_by
fn sorted_unstable_by(self, compare: impl FnMut(&T, &T) -> Ordering) -> Self;
/// Same behaviour as [`Vec::sort_unstable_by_key`][vec_sort_unstable_by_key],
/// but returns itself in a form consistent with chained calls.
///
/// [vec_sort_unstable_by_key]: std::vec::Vec#method.sort_unstable_by_key
fn sorted_unstable_by_key<K>(self, f: impl FnMut(&T) -> K) -> Self
where
K: Ord;
/// Same behaviour as [`Vec::reverse`][vec_reverse],
/// but returns itself in a form consistent with chained calls.
///
/// [vec_reverse]: std::vec::Vec#method.reverse
fn reversed(self) -> Self;
}
impl<T> VecExt<T> for Vec<T> {
fn sorted(mut self) -> Self
where
T: Ord,
{
self.sort();
self
}
fn sorted_by(mut self, compare: impl FnMut(&T, &T) -> Ordering) -> Self {
self.sort_by(compare);
self
}
fn sorted_by_key<K>(mut self, f: impl FnMut(&T) -> K) -> Self
where
K: Ord,
{
self.sort_by_key(f);
self
}
fn sorted_by_cached_key<K>(mut self, f: impl FnMut(&T) -> K) -> Self
where
K: Ord,
{
self.sort_by_cached_key(f);
self
}
fn sorted_unstable(mut self) -> Self
where
T: Ord,
{
self.sort_unstable();
self
}
fn sorted_unstable_by(mut self, compare: impl FnMut(&T, &T) -> Ordering) -> Self {
self.sort_unstable_by(compare);
self
}
fn sorted_unstable_by_key<K>(mut self, f: impl FnMut(&T) -> K) -> Self
where
K: Ord,
{
self.sort_unstable_by_key(f);
self
}
fn reversed(mut self) -> Self {
self.reverse();
self
}
}