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Add {min,max}_set(_by{_key)?)? functions (7) cargo fmt extrema_set.rs
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phimuemue committed May 4, 2022
1 parent fb57fc6 commit 08a10da
Showing 1 changed file with 20 additions and 20 deletions.
40 changes: 20 additions & 20 deletions src/extrema_set.rs
Original file line number Diff line number Diff line change
@@ -1,12 +1,15 @@
use std::cmp::Ordering;

/// Implementation guts for `min_set`, `min_set_by`, and `min_set_by_key`.
pub fn min_set_impl<I, K, F, Compare>(mut it: I,
mut key_for: F,
mut compare: Compare) -> Vec<I::Item>
where I: Iterator,
F: FnMut(&I::Item) -> K,
Compare: FnMut(&I::Item, &I::Item, &K, &K) -> Ordering,
pub fn min_set_impl<I, K, F, Compare>(
mut it: I,
mut key_for: F,
mut compare: Compare,
) -> Vec<I::Item>
where
I: Iterator,
F: FnMut(&I::Item) -> K,
Compare: FnMut(&I::Item, &I::Item, &K, &K) -> Ordering,
{
match it.next() {
None => Vec::new(),
Expand All @@ -20,29 +23,26 @@ pub fn min_set_impl<I, K, F, Compare>(mut it: I,
result.clear();
result.push(element);
current_key = key;
},
}
Ordering::Equal => {
result.push(element);
},
Ordering::Greater => {
},
}
Ordering::Greater => {}
}
});
result
}
}

}

/// Implementation guts for `ax_set`, `max_set_by`, and `max_set_by_key`.
pub fn max_set_impl<I, K, F, Compare>(it: I,
key_for: F,
mut compare: Compare) -> Vec<I::Item>
where I: Iterator,
F: FnMut(&I::Item) -> K,
Compare: FnMut(&I::Item, &I::Item, &K, &K) -> Ordering,
pub fn max_set_impl<I, K, F, Compare>(it: I, key_for: F, mut compare: Compare) -> Vec<I::Item>
where
I: Iterator,
F: FnMut(&I::Item) -> K,
Compare: FnMut(&I::Item, &I::Item, &K, &K) -> Ordering,
{
min_set_impl(it, key_for, |it1, it2, key1, key2| compare(it2, it1, key2, key1))
min_set_impl(it, key_for, |it1, it2, key1, key2| {
compare(it2, it1, key2, key1)
})
}


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