Struct UniqueBy
#[must_use = "iterator adaptors are lazy and do nothing unless consumed"]
pub struct UniqueBy<I: Iterator, V, F, S = RandomState>
where
S: BuildHasher, { /* private fields */ }An iterator adapter to filter out duplicate elements.
See .unique_by() for more information.
Trait Implementations
impl<I, V, F, S> Debug for UniqueBy<I, V, F, S>
where
I: Iterator + Debug,
V: Debug + Hash + Eq,
S: BuildHasher,
fn fmt(&self, f: &mut Formatter<'_>) -> Result
impl<I, V, F, S> DoubleEndedIterator for UniqueBy<I, V, F, S>
where
I: DoubleEndedIterator,
V: Eq + Hash,
F: FnMut(&I::Item) -> V,
S: BuildHasher,
fn next_back(&mut self) -> Option<Self::Item>
impl<I, V, F, S> FusedIterator for UniqueBy<I, V, F, S>
where
I: FusedIterator,
V: Eq + Hash,
F: FnMut(&I::Item) -> V,
S: BuildHasher,
impl<I, V, F, S> Iterator for UniqueBy<I, V, F, S>
where
I: Iterator,
V: Eq + Hash,
F: FnMut(&I::Item) -> V,
S: BuildHasher,
type Item = <I as Iterator>::Item;fn next(&mut self) -> Option<Self::Item>fn size_hint(&self) -> (usize, Option<usize>)fn count(self) -> usize
impl<I: Clone + Iterator, V: Clone, F: Clone, S> Clone for UniqueBy<I, V, F, S>
where
S: BuildHasher + Clone,
fn clone(&self) -> UniqueBy<I, V, F, S>
Auto Trait Implementations
impl<I, V, F, S> Freeze for UniqueBy<I, V, F, S>
where
I: Freeze,
HashMap<V, (), S>: Freeze,
F: Freeze,
impl<I, V, F, S> RefUnwindSafe for UniqueBy<I, V, F, S>
where
I: RefUnwindSafe,
HashMap<V, (), S>: RefUnwindSafe,
F: RefUnwindSafe,
impl<I, V, F, S> Send for UniqueBy<I, V, F, S>
where
I: Send,
HashMap<V, (), S>: Send,
F: Send,
impl<I, V, F, S> Sync for UniqueBy<I, V, F, S>
where
I: Sync,
HashMap<V, (), S>: Sync,
F: Sync,
impl<I, V, F, S> Unpin for UniqueBy<I, V, F, S>
where
I: Unpin,
HashMap<V, (), S>: Unpin,
F: Unpin,
impl<I, V, F, S> UnsafeUnpin for UniqueBy<I, V, F, S>
where
I: UnsafeUnpin,
HashMap<V, (), S>: UnsafeUnpin,
F: UnsafeUnpin,
impl<I, V, F, S> UnwindSafe for UniqueBy<I, V, F, S>
where
I: UnwindSafe,
HashMap<V, (), S>: UnwindSafe,
F: UnwindSafe,
Blanket Implementations
impl<I> IntoIterator for UniqueBy<I, V, F, S>
where
I: Iterator,
type Item = <I as Iterator>::Item;type IntoIter = I;fn into_iter(self) -> I
impl<IT> MultiUnzip<()> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = ()>,
fn multiunzip(self)
impl<IT, A, FromA> MultiUnzip<(FromA,)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A,)>,
FromA: Default + Extend<A>,
fn multiunzip(self) -> (FromA,)
impl<IT, A, FromA, B, FromB> MultiUnzip<(FromA, FromB)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
fn multiunzip(self) -> (FromA, FromB)
impl<IT, A, FromA, B, FromB, C, FromC> MultiUnzip<(FromA, FromB, FromC)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B, C)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
FromC: Default + Extend<C>,
fn multiunzip(self) -> (FromA, FromB, FromC)
impl<IT, A, FromA, B, FromB, C, FromC, D, FromD> MultiUnzip<(FromA, FromB, FromC, FromD)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B, C, D)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
FromC: Default + Extend<C>,
FromD: Default + Extend<D>,
fn multiunzip(self) -> (FromA, FromB, FromC, FromD)
impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE> MultiUnzip<(FromA, FromB, FromC, FromD, FromE)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B, C, D, E)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
FromC: Default + Extend<C>,
FromD: Default + Extend<D>,
FromE: Default + Extend<E>,
fn multiunzip(self) -> (FromA, FromB, FromC, FromD, FromE)
impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF> MultiUnzip<(FromA, FromB, FromC, FromD, FromE, FromF)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B, C, D, E, F)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
FromC: Default + Extend<C>,
FromD: Default + Extend<D>,
FromE: Default + Extend<E>,
FromF: Default + Extend<F>,
fn multiunzip(self) -> (FromA, FromB, FromC, FromD, FromE, FromF)
impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG> MultiUnzip<(FromA, FromB, FromC, FromD, FromE, FromF, FromG)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B, C, D, E, F, G)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
FromC: Default + Extend<C>,
FromD: Default + Extend<D>,
FromE: Default + Extend<E>,
FromF: Default + Extend<F>,
FromG: Default + Extend<G>,
fn multiunzip(self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG)
impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG, H, FromH> MultiUnzip<(FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B, C, D, E, F, G, H)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
FromC: Default + Extend<C>,
FromD: Default + Extend<D>,
FromE: Default + Extend<E>,
FromF: Default + Extend<F>,
FromG: Default + Extend<G>,
FromH: Default + Extend<H>,
fn multiunzip(self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH)
impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG, H, FromH, I, FromI> MultiUnzip<(FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B, C, D, E, F, G, H, I)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
FromC: Default + Extend<C>,
FromD: Default + Extend<D>,
FromE: Default + Extend<E>,
FromF: Default + Extend<F>,
FromG: Default + Extend<G>,
FromH: Default + Extend<H>,
FromI: Default + Extend<I>,
fn multiunzip(self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI)
impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG, H, FromH, I, FromI, J, FromJ> MultiUnzip<(FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI, FromJ)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B, C, D, E, F, G, H, I, J)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
FromC: Default + Extend<C>,
FromD: Default + Extend<D>,
FromE: Default + Extend<E>,
FromF: Default + Extend<F>,
FromG: Default + Extend<G>,
FromH: Default + Extend<H>,
FromI: Default + Extend<I>,
FromJ: Default + Extend<J>,
fn multiunzip(self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI, FromJ)
impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG, H, FromH, I, FromI, J, FromJ, K, FromK> MultiUnzip<(FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI, FromJ, FromK)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B, C, D, E, F, G, H, I, J, K)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
FromC: Default + Extend<C>,
FromD: Default + Extend<D>,
FromE: Default + Extend<E>,
FromF: Default + Extend<F>,
FromG: Default + Extend<G>,
FromH: Default + Extend<H>,
FromI: Default + Extend<I>,
FromJ: Default + Extend<J>,
FromK: Default + Extend<K>,
fn multiunzip(self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI, FromJ, FromK)
impl<IT, A, FromA, B, FromB, C, FromC, D, FromD, E, FromE, F, FromF, G, FromG, H, FromH, I, FromI, J, FromJ, K, FromK, L, FromL> MultiUnzip<(FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI, FromJ, FromK, FromL)> for UniqueBy<I, V, F, S>
where
IT: Iterator<Item = (A, B, C, D, E, F, G, H, I, J, K, L)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
FromC: Default + Extend<C>,
FromD: Default + Extend<D>,
FromE: Default + Extend<E>,
FromF: Default + Extend<F>,
FromG: Default + Extend<G>,
FromH: Default + Extend<H>,
FromI: Default + Extend<I>,
FromJ: Default + Extend<J>,
FromK: Default + Extend<K>,
FromL: Default + Extend<L>,
fn multiunzip(self) -> (FromA, FromB, FromC, FromD, FromE, FromF, FromG, FromH, FromI, FromJ, FromK, FromL)
impl<T> Any for UniqueBy<I, V, F, S>
where
T: 'static + ?Sized,
fn type_id(&self) -> TypeId
impl<T> Borrow<T> for UniqueBy<I, V, F, S>
where
T: ?Sized,
fn borrow(&self) -> &T
impl<T> BorrowMut<T> for UniqueBy<I, V, F, S>
where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
impl<T> CloneToUninit for UniqueBy<I, V, F, S>
where
T: Clone,
unsafe fn clone_to_uninit(&self, dest: *mut u8)
impl<T> From<T> for UniqueBy<I, V, F, S>
fn from(t: T) -> TReturns the argument unchanged.
impl<T> IntoEither for UniqueBy<I, V, F, S>
impl<T> Itertools for UniqueBy<I, V, F, S>
where
T: Iterator + ?Sized,
impl<T> ToOwned for UniqueBy<I, V, F, S>
where
T: Clone,
type Owned = T;fn to_owned(&self) -> Tfn clone_into(&self, target: &mut T)
impl<T, U> Into<U> for UniqueBy<I, V, F, S>
where
U: From<T>,
fn into(self) -> UCalls
U::from(self).That is, this conversion is whatever the implementation of
[From]<T> for Uchooses to do.
impl<T, U> TryFrom<U> for UniqueBy<I, V, F, S>
where
U: Into<T>,
type Error = never;fn try_from(value: U) -> Result<T, never>
impl<T, U> TryInto<U> for UniqueBy<I, V, F, S>
where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error;fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>