Struct rin::ecs::operators::IterOptionWrapper

pub struct IterOptionWrapper<I> { /* fields omitted */ }

Trait Implementations

impl<I> ExactSizeIterator for IterOptionWrapper<I> where
    I: ExactSizeIterator, 

pub fn len(&self) -> usize

Returns the exact length of the iterator.

pub fn is_empty(&self) -> bool

🔬 This is a nightly-only experimental API. (exact_size_is_empty)

Returns true if the iterator is empty.

impl<I> IndexedParallelIterator for IterOptionWrapper<I> where
    I: IndexedParallelIterator, 

pub fn len(&self) -> usize

Produces an exact count of how many items this iterator will produce, presuming no panic occurs.

pub fn drive<C>(
    self,
    consumer: C
) -> <C as Consumer<<IterOptionWrapper<I> as ParallelIterator>::Item>>::Result where
    C: Consumer<<IterOptionWrapper<I> as ParallelIterator>::Item>, 

Internal method used to define the behavior of this parallel iterator. You should not need to call this directly.

pub fn with_producer<CB>(
    self,
    callback: CB
) -> <CB as ProducerCallback<<IterOptionWrapper<I> as ParallelIterator>::Item>>::Output where
    CB: ProducerCallback<<IterOptionWrapper<I> as ParallelIterator>::Item>, 

Internal method used to define the behavior of this parallel iterator. You should not need to call this directly.

pub fn collect_into_vec(self, target: &mut Vec<Self::Item, Global>)

Collects the results of the iterator into the specified vector. The vector is always truncated before execution begins. If possible, reusing the vector across calls can lead to better performance since it reuses the same backing buffer.

pub fn unzip_into_vecs<A, B>(
    self,
    left: &mut Vec<A, Global>,
    right: &mut Vec<B, Global>
) where
    Self: IndexedParallelIterator<Item = (A, B)>,
    B: Send,
    A: Send, 

Unzips the results of the iterator into the specified vectors. The vectors are always truncated before execution begins. If possible, reusing the vectors across calls can lead to better performance since they reuse the same backing buffer.

pub fn zip<Z>(self, zip_op: Z) -> Zip<Self, <Z as IntoParallelIterator>::Iter> where
    Z: IntoParallelIterator,
    <Z as IntoParallelIterator>::Iter: IndexedParallelIterator, 

Iterates over tuples (A, B), where the items A are from this iterator and B are from the iterator given as argument. Like the zip method on ordinary iterators, if the two iterators are of unequal length, you only get the items they have in common.

pub fn zip_eq<Z>(
    self,
    zip_op: Z
) -> ZipEq<Self, <Z as IntoParallelIterator>::Iter> where
    Z: IntoParallelIterator,
    <Z as IntoParallelIterator>::Iter: IndexedParallelIterator, 

The same as Zip, but requires that both iterators have the same length.

pub fn interleave<I>(
    self,
    other: I
) -> Interleave<Self, <I as IntoParallelIterator>::Iter> where
    I: IntoParallelIterator<Item = Self::Item>,
    <I as IntoParallelIterator>::Iter: IndexedParallelIterator,
    <<I as IntoParallelIterator>::Iter as ParallelIterator>::Item == Self::Item, 

Interleaves elements of this iterator and the other given iterator. Alternately yields elements from this iterator and the given iterator, until both are exhausted. If one iterator is exhausted before the other, the last elements are provided from the other.

pub fn interleave_shortest<I>(
    self,
    other: I
) -> InterleaveShortest<Self, <I as IntoParallelIterator>::Iter> where
    I: IntoParallelIterator<Item = Self::Item>,
    <I as IntoParallelIterator>::Iter: IndexedParallelIterator,
    <<I as IntoParallelIterator>::Iter as ParallelIterator>::Item == Self::Item, 

Interleaves elements of this iterator and the other given iterator, until one is exhausted.

pub fn chunks(self, chunk_size: usize) -> Chunks<Self>

Splits an iterator up into fixed-size chunks.

pub fn cmp<I>(self, other: I) -> Ordering where
    I: IntoParallelIterator<Item = Self::Item>,
    <I as IntoParallelIterator>::Iter: IndexedParallelIterator,
    Self::Item: Ord, 

Lexicographically compares the elements of this ParallelIterator with those of another.

pub fn partial_cmp<I>(self, other: I) -> Option<Ordering> where
    I: IntoParallelIterator,
    <I as IntoParallelIterator>::Iter: IndexedParallelIterator,
    Self::Item: PartialOrd<<I as IntoParallelIterator>::Item>, 

Lexicographically compares the elements of this ParallelIterator with those of another.

pub fn eq<I>(self, other: I) -> bool where
    I: IntoParallelIterator,
    <I as IntoParallelIterator>::Iter: IndexedParallelIterator,
    Self::Item: PartialEq<<I as IntoParallelIterator>::Item>, 

Determines if the elements of this ParallelIterator are equal to those of another

pub fn ne<I>(self, other: I) -> bool where
    I: IntoParallelIterator,
    <I as IntoParallelIterator>::Iter: IndexedParallelIterator,
    Self::Item: PartialEq<<I as IntoParallelIterator>::Item>, 

Determines if the elements of this ParallelIterator are unequal to those of another

pub fn lt<I>(self, other: I) -> bool where
    I: IntoParallelIterator,
    <I as IntoParallelIterator>::Iter: IndexedParallelIterator,
    Self::Item: PartialOrd<<I as IntoParallelIterator>::Item>, 

Determines if the elements of this ParallelIterator are lexicographically less than those of another.

pub fn le<I>(self, other: I) -> bool where
    I: IntoParallelIterator,
    <I as IntoParallelIterator>::Iter: IndexedParallelIterator,
    Self::Item: PartialOrd<<I as IntoParallelIterator>::Item>, 

Determines if the elements of this ParallelIterator are less or equal to those of another.

pub fn gt<I>(self, other: I) -> bool where
    I: IntoParallelIterator,
    <I as IntoParallelIterator>::Iter: IndexedParallelIterator,
    Self::Item: PartialOrd<<I as IntoParallelIterator>::Item>, 

Determines if the elements of this ParallelIterator are lexicographically greater than those of another.

pub fn ge<I>(self, other: I) -> bool where
    I: IntoParallelIterator,
    <I as IntoParallelIterator>::Iter: IndexedParallelIterator,
    Self::Item: PartialOrd<<I as IntoParallelIterator>::Item>, 

Determines if the elements of this ParallelIterator are less or equal to those of another.

pub fn enumerate(self) -> Enumerate<Self>

Yields an index along with each item.

pub fn step_by(self, step: usize) -> StepBy<Self>

Creates an iterator that steps by the given amount

pub fn skip(self, n: usize) -> Skip<Self>

Creates an iterator that skips the first n elements.

pub fn take(self, n: usize) -> Take<Self>

Creates an iterator that yields the first n elements.

pub fn position_any<P>(self, predicate: P) -> Option<usize> where
    P: Fn(Self::Item) -> bool + Sync + Send, 

Searches for some item in the parallel iterator that matches the given predicate, and returns its index. Like ParallelIterator::find_any, the parallel search will not necessarily find the first match, and once a match is found we’ll attempt to stop processing any more.

pub fn position_first<P>(self, predicate: P) -> Option<usize> where
    P: Fn(Self::Item) -> bool + Sync + Send, 

Searches for the sequentially first item in the parallel iterator that matches the given predicate, and returns its index.

pub fn position_last<P>(self, predicate: P) -> Option<usize> where
    P: Fn(Self::Item) -> bool + Sync + Send, 

Searches for the sequentially last item in the parallel iterator that matches the given predicate, and returns its index.

pub fn positions<P>(self, predicate: P) -> Positions<Self, P> where
    P: Fn(Self::Item) -> bool + Sync + Send, 

Searches for items in the parallel iterator that match the given predicate, and returns their indices.

pub fn rev(self) -> Rev<Self>

Produces a new iterator with the elements of this iterator in reverse order.

pub fn with_min_len(self, min: usize) -> MinLen<Self>

Sets the minimum length of iterators desired to process in each thread. Rayon will not split any smaller than this length, but of course an iterator could already be smaller to begin with.

pub fn with_max_len(self, max: usize) -> MaxLen<Self>

Sets the maximum length of iterators desired to process in each thread. Rayon will try to split at least below this length, unless that would put it below the length from with_min_len(). For example, given min=10 and max=15, a length of 16 will not be split any further.

impl<I> Iterator for IterOptionWrapper<I> where
    I: Iterator, 

type Item = <I as Iterator>::Item

The type of the elements being iterated over.

pub fn next(&mut self) -> Option<<I as Iterator>::Item>

Advances the iterator and returns the next value.

pub fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the iterator.

pub fn count(self) -> usize

Consumes the iterator, counting the number of iterations and returning it.

pub fn last(self) -> Option<Self::Item>

Consumes the iterator, returning the last element.

pub fn advance_by(&mut self, n: usize) -> Result<(), usize>

🔬 This is a nightly-only experimental API. (iter_advance_by)

recently added

Advances the iterator by n elements.

pub fn nth(&mut self, n: usize) -> Option<Self::Item>

Returns the nth element of the iterator.

pub fn step_by(self, step: usize) -> StepBy<Self>

Creates an iterator starting at the same point, but stepping by the given amount at each iteration.

pub fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter> where
    U: IntoIterator<Item = Self::Item>, 

Takes two iterators and creates a new iterator over both in sequence.

pub fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter> where
    U: IntoIterator, 

‘Zips up’ two iterators into a single iterator of pairs.

pub fn intersperse(self, separator: Self::Item) -> Intersperse<Self> where
    Self::Item: Clone, 

🔬 This is a nightly-only experimental API. (iter_intersperse)

recently added

Creates a new iterator which places a copy of separator between adjacent items of the original iterator.

pub fn intersperse_with<G>(self, separator: G) -> IntersperseWith<Self, G> where
    G: FnMut() -> Self::Item, 

🔬 This is a nightly-only experimental API. (iter_intersperse)

recently added

Creates a new iterator which places an item generated by separator between adjacent items of the original iterator.

pub fn map<B, F>(self, f: F) -> Map<Self, F> where
    F: FnMut(Self::Item) -> B, 

Takes a closure and creates an iterator which calls that closure on each element.

pub fn for_each<F>(self, f: F) where
    F: FnMut(Self::Item), 

Calls a closure on each element of an iterator.

pub fn filter<P>(self, predicate: P) -> Filter<Self, P> where
    P: FnMut(&Self::Item) -> bool, 

Creates an iterator which uses a closure to determine if an element should be yielded.

pub fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F> where
    F: FnMut(Self::Item) -> Option<B>, 

Creates an iterator that both filters and maps.

pub fn enumerate(self) -> Enumerate<Self>

Creates an iterator which gives the current iteration count as well as the next value.

pub fn peekable(self) -> Peekable<Self>

Creates an iterator which can use the peek and peek_mut methods to look at the next element of the iterator without consuming it. See their documentation for more information.

pub fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P> where
    P: FnMut(&Self::Item) -> bool, 

Creates an iterator that skips elements based on a predicate.

pub fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where
    P: FnMut(&Self::Item) -> bool, 

Creates an iterator that yields elements based on a predicate.

pub fn map_while<B, P>(self, predicate: P) -> MapWhile<Self, P> where
    P: FnMut(Self::Item) -> Option<B>, 

🔬 This is a nightly-only experimental API. (iter_map_while)

recently added

Creates an iterator that both yields elements based on a predicate and maps.

pub fn skip(self, n: usize) -> Skip<Self>

Creates an iterator that skips the first n elements.

pub fn take(self, n: usize) -> Take<Self>

Creates an iterator that yields the first n elements, or fewer if the underlying iterator ends sooner.

pub fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F> where
    F: FnMut(&mut St, Self::Item) -> Option<B>, 

An iterator adaptor similar to fold that holds internal state and produces a new iterator.

pub fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
    F: FnMut(Self::Item) -> U,
    U: IntoIterator, 

Creates an iterator that works like map, but flattens nested structure.

pub fn flatten(self) -> Flatten<Self> where
    Self::Item: IntoIterator, 

Creates an iterator that flattens nested structure.

pub fn fuse(self) -> Fuse<Self>

Creates an iterator which ends after the first None.

pub fn inspect<F>(self, f: F) -> Inspect<Self, F> where
    F: FnMut(&Self::Item), 

Does something with each element of an iterator, passing the value on.

pub fn by_ref(&mut self) -> &mut Self

Borrows an iterator, rather than consuming it.

#[must_use = "if you really need to exhaust the iterator, consider `.for_each(drop)` instead"]

pub fn collect<B>(self) -> B where
    B: FromIterator<Self::Item>, 

Transforms an iterator into a collection.

pub fn partition<B, F>(self, f: F) -> (B, B) where
    B: Default + Extend<Self::Item>,
    F: FnMut(&Self::Item) -> bool, 

Consumes an iterator, creating two collections from it.

pub fn partition_in_place<'a, T, P>(self, predicate: P) -> usize where
    Self: DoubleEndedIterator<Item = &'a mut T>,
    P: FnMut(&T) -> bool,
    T: 'a, 

🔬 This is a nightly-only experimental API. (iter_partition_in_place)

new API

Reorders the elements of this iterator in-place according to the given predicate, such that all those that return true precede all those that return false. Returns the number of true elements found.

pub fn is_partitioned<P>(self, predicate: P) -> bool where
    P: FnMut(Self::Item) -> bool, 

🔬 This is a nightly-only experimental API. (iter_is_partitioned)

new API

Checks if the elements of this iterator are partitioned according to the given predicate, such that all those that return true precede all those that return false.

pub fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R where
    F: FnMut(B, Self::Item) -> R,
    R: Try<Ok = B>, 

An iterator method that applies a function as long as it returns successfully, producing a single, final value.

pub fn try_for_each<F, R>(&mut self, f: F) -> R where
    F: FnMut(Self::Item) -> R,
    R: Try<Ok = ()>, 

An iterator method that applies a fallible function to each item in the iterator, stopping at the first error and returning that error.

pub fn fold<B, F>(self, init: B, f: F) -> B where
    F: FnMut(B, Self::Item) -> B, 

Folds every element into an accumulator by applying an operation, returning the final result.

pub fn reduce<F>(self, f: F) -> Option<Self::Item> where
    F: FnMut(Self::Item, Self::Item) -> Self::Item, 

Reduces the elements to a single one, by repeatedly applying a reducing operation.

pub fn all<F>(&mut self, f: F) -> bool where
    F: FnMut(Self::Item) -> bool, 

Tests if every element of the iterator matches a predicate.

pub fn any<F>(&mut self, f: F) -> bool where
    F: FnMut(Self::Item) -> bool, 

Tests if any element of the iterator matches a predicate.

pub fn find<P>(&mut self, predicate: P) -> Option<Self::Item> where
    P: FnMut(&Self::Item) -> bool, 

Searches for an element of an iterator that satisfies a predicate.

pub fn find_map<B, F>(&mut self, f: F) -> Option<B> where
    F: FnMut(Self::Item) -> Option<B>, 

Applies function to the elements of iterator and returns the first non-none result.

pub fn try_find<F, R>(
    &mut self,
    f: F
) -> Result<Option<Self::Item>, <R as Try>::Error> where
    F: FnMut(&Self::Item) -> R,
    R: Try<Ok = bool>, 

🔬 This is a nightly-only experimental API. (try_find)

new API

Applies function to the elements of iterator and returns the first true result or the first error.

pub fn position<P>(&mut self, predicate: P) -> Option<usize> where
    P: FnMut(Self::Item) -> bool, 

Searches for an element in an iterator, returning its index.

pub fn rposition<P>(&mut self, predicate: P) -> Option<usize> where
    Self: ExactSizeIterator + DoubleEndedIterator,
    P: FnMut(Self::Item) -> bool, 

Searches for an element in an iterator from the right, returning its index.

pub fn max(self) -> Option<Self::Item> where
    Self::Item: Ord, 

Returns the maximum element of an iterator.

pub fn min(self) -> Option<Self::Item> where
    Self::Item: Ord, 

Returns the minimum element of an iterator.

pub fn max_by_key<B, F>(self, f: F) -> Option<Self::Item> where
    B: Ord,
    F: FnMut(&Self::Item) -> B, 

Returns the element that gives the maximum value from the specified function.

pub fn max_by<F>(self, compare: F) -> Option<Self::Item> where
    F: FnMut(&Self::Item, &Self::Item) -> Ordering, 

Returns the element that gives the maximum value with respect to the specified comparison function.

pub fn min_by_key<B, F>(self, f: F) -> Option<Self::Item> where
    B: Ord,
    F: FnMut(&Self::Item) -> B, 

Returns the element that gives the minimum value from the specified function.

pub fn min_by<F>(self, compare: F) -> Option<Self::Item> where
    F: FnMut(&Self::Item, &Self::Item) -> Ordering, 

Returns the element that gives the minimum value with respect to the specified comparison function.

pub fn rev(self) -> Rev<Self> where
    Self: DoubleEndedIterator, 

Reverses an iterator’s direction.

pub fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB) where
    Self: Iterator<Item = (A, B)>,
    FromA: Default + Extend<A>,
    FromB: Default + Extend<B>, 

Converts an iterator of pairs into a pair of containers.

pub fn copied<'a, T>(self) -> Copied<Self> where
    Self: Iterator<Item = &'a T>,
    T: 'a + Copy, 

Creates an iterator which copies all of its elements.

pub fn cloned<'a, T>(self) -> Cloned<Self> where
    Self: Iterator<Item = &'a T>,
    T: 'a + Clone, 

Creates an iterator which clones all of its elements.

pub fn cycle(self) -> Cycle<Self> where
    Self: Clone, 

Repeats an iterator endlessly.

pub fn sum<S>(self) -> S where
    S: Sum<Self::Item>, 

Sums the elements of an iterator.

pub fn product<P>(self) -> P where
    P: Product<Self::Item>, 

Iterates over the entire iterator, multiplying all the elements

pub fn cmp<I>(self, other: I) -> Ordering where
    I: IntoIterator<Item = Self::Item>,
    Self::Item: Ord, 

Lexicographically compares the elements of this Iterator with those of another.

pub fn cmp_by<I, F>(self, other: I, cmp: F) -> Ordering where
    F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Ordering,
    I: IntoIterator, 

🔬 This is a nightly-only experimental API. (iter_order_by)

Lexicographically compares the elements of this Iterator with those of another with respect to the specified comparison function.

pub fn partial_cmp<I>(self, other: I) -> Option<Ordering> where
    I: IntoIterator,
    Self::Item: PartialOrd<<I as IntoIterator>::Item>, 

Lexicographically compares the elements of this Iterator with those of another.

pub fn partial_cmp_by<I, F>(self, other: I, partial_cmp: F) -> Option<Ordering> where
    F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Option<Ordering>,
    I: IntoIterator, 

🔬 This is a nightly-only experimental API. (iter_order_by)

Lexicographically compares the elements of this Iterator with those of another with respect to the specified comparison function.

pub fn eq<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialEq<<I as IntoIterator>::Item>, 

Determines if the elements of this Iterator are equal to those of another.

pub fn eq_by<I, F>(self, other: I, eq: F) -> bool where
    F: FnMut(Self::Item, <I as IntoIterator>::Item) -> bool,
    I: IntoIterator, 

🔬 This is a nightly-only experimental API. (iter_order_by)

Determines if the elements of this Iterator are equal to those of another with respect to the specified equality function.

pub fn ne<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialEq<<I as IntoIterator>::Item>, 

Determines if the elements of this Iterator are unequal to those of another.

pub fn lt<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialOrd<<I as IntoIterator>::Item>, 

Determines if the elements of this Iterator are lexicographically less than those of another.

pub fn le<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialOrd<<I as IntoIterator>::Item>, 

Determines if the elements of this Iterator are lexicographically less or equal to those of another.

pub fn gt<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialOrd<<I as IntoIterator>::Item>, 

Determines if the elements of this Iterator are lexicographically greater than those of another.

pub fn ge<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialOrd<<I as IntoIterator>::Item>, 

Determines if the elements of this Iterator are lexicographically greater than or equal to those of another.

pub fn is_sorted(self) -> bool where
    Self::Item: PartialOrd<Self::Item>, 

🔬 This is a nightly-only experimental API. (is_sorted)

new API

Checks if the elements of this iterator are sorted.

pub fn is_sorted_by<F>(self, compare: F) -> bool where
    F: FnMut(&Self::Item, &Self::Item) -> Option<Ordering>, 

🔬 This is a nightly-only experimental API. (is_sorted)

new API

Checks if the elements of this iterator are sorted using the given comparator function.

pub fn is_sorted_by_key<F, K>(self, f: F) -> bool where
    F: FnMut(Self::Item) -> K,
    K: PartialOrd<K>, 

🔬 This is a nightly-only experimental API. (is_sorted)

new API

Checks if the elements of this iterator are sorted using the given key extraction function.

impl<I> ParallelIterator for IterOptionWrapper<I> where
    I: ParallelIterator, 

type Item = <I as ParallelIterator>::Item

The type of item that this parallel iterator produces. For example, if you use the for_each method, this is the type of item that your closure will be invoked with.

pub fn drive_unindexed<C>(
    self,
    consumer: C
) -> <C as Consumer<<IterOptionWrapper<I> as ParallelIterator>::Item>>::Result where
    C: UnindexedConsumer<<IterOptionWrapper<I> as ParallelIterator>::Item>, 

Internal method used to define the behavior of this parallel iterator. You should not need to call this directly.

pub fn for_each<OP>(self, op: OP) where
    OP: Fn(Self::Item) + Sync + Send, 

Executes OP on each item produced by the iterator, in parallel.

pub fn for_each_with<OP, T>(self, init: T, op: OP) where
    T: Send + Clone,
    OP: Fn(&mut T, Self::Item) + Sync + Send, 

Executes OP on the given init value with each item produced by the iterator, in parallel.

pub fn for_each_init<OP, INIT, T>(self, init: INIT, op: OP) where
    INIT: Fn() -> T + Sync + Send,
    OP: Fn(&mut T, Self::Item) + Sync + Send, 

Executes OP on a value returned by init with each item produced by the iterator, in parallel.

pub fn try_for_each<OP, R>(self, op: OP) -> R where
    R: Try<Ok = ()> + Send,
    OP: Fn(Self::Item) -> R + Sync + Send, 

Executes a fallible OP on each item produced by the iterator, in parallel.

pub fn try_for_each_with<OP, T, R>(self, init: T, op: OP) -> R where
    T: Send + Clone,
    R: Try<Ok = ()> + Send,
    OP: Fn(&mut T, Self::Item) -> R + Sync + Send, 

Executes a fallible OP on the given init value with each item produced by the iterator, in parallel.

pub fn try_for_each_init<OP, INIT, T, R>(self, init: INIT, op: OP) -> R where
    INIT: Fn() -> T + Sync + Send,
    R: Try<Ok = ()> + Send,
    OP: Fn(&mut T, Self::Item) -> R + Sync + Send, 

Executes a fallible OP on a value returned by init with each item produced by the iterator, in parallel.

pub fn count(self) -> usize

Counts the number of items in this parallel iterator.

pub fn map<F, R>(self, map_op: F) -> Map<Self, F> where
    F: Fn(Self::Item) -> R + Sync + Send,
    R: Send, 

Applies map_op to each item of this iterator, producing a new iterator with the results.

pub fn map_with<F, T, R>(self, init: T, map_op: F) -> MapWith<Self, T, F> where
    T: Send + Clone,
    F: Fn(&mut T, Self::Item) -> R + Sync + Send,
    R: Send, 

Applies map_op to the given init value with each item of this iterator, producing a new iterator with the results.

pub fn map_init<F, INIT, T, R>(
    self,
    init: INIT,
    map_op: F
) -> MapInit<Self, INIT, F> where
    INIT: Fn() -> T + Sync + Send,
    F: Fn(&mut T, Self::Item) -> R + Sync + Send,
    R: Send, 

Applies map_op to a value returned by init with each item of this iterator, producing a new iterator with the results.

pub fn cloned<'a, T>(self) -> Cloned<Self> where
    Self: ParallelIterator<Item = &'a T>,
    T: 'a + Clone + Send, 

Creates an iterator which clones all of its elements. This may be useful when you have an iterator over &T, but you need T, and that type implements Clone. See also copied().

pub fn copied<'a, T>(self) -> Copied<Self> where
    Self: ParallelIterator<Item = &'a T>,
    T: 'a + Copy + Send, 

Creates an iterator which copies all of its elements. This may be useful when you have an iterator over &T, but you need T, and that type implements Copy. See also cloned().

pub fn inspect<OP>(self, inspect_op: OP) -> Inspect<Self, OP> where
    OP: Fn(&Self::Item) + Sync + Send, 

Applies inspect_op to a reference to each item of this iterator, producing a new iterator passing through the original items. This is often useful for debugging to see what’s happening in iterator stages.

pub fn update<F>(self, update_op: F) -> Update<Self, F> where
    F: Fn(&mut Self::Item) + Sync + Send, 

Mutates each item of this iterator before yielding it.

pub fn filter<P>(self, filter_op: P) -> Filter<Self, P> where
    P: Fn(&Self::Item) -> bool + Sync + Send, 

Applies filter_op to each item of this iterator, producing a new iterator with only the items that gave true results.

pub fn filter_map<P, R>(self, filter_op: P) -> FilterMap<Self, P> where
    P: Fn(Self::Item) -> Option<R> + Sync + Send,
    R: Send, 

Applies filter_op to each item of this iterator to get an Option, producing a new iterator with only the items from Some results.

pub fn flat_map<F, PI>(self, map_op: F) -> FlatMap<Self, F> where
    PI: IntoParallelIterator,
    F: Fn(Self::Item) -> PI + Sync + Send, 

Applies map_op to each item of this iterator to get nested parallel iterators, producing a new parallel iterator that flattens these back into one.

pub fn flat_map_iter<F, SI>(self, map_op: F) -> FlatMapIter<Self, F> where
    F: Fn(Self::Item) -> SI + Sync + Send,
    SI: IntoIterator,
    <SI as IntoIterator>::Item: Send, 

Applies map_op to each item of this iterator to get nested serial iterators, producing a new parallel iterator that flattens these back into one.

pub fn flatten(self) -> Flatten<Self> where
    Self::Item: IntoParallelIterator, 

An adaptor that flattens parallel-iterable Items into one large iterator.

pub fn flatten_iter(self) -> FlattenIter<Self> where
    Self::Item: IntoIterator,
    <Self::Item as IntoIterator>::Item: Send, 

An adaptor that flattens serial-iterable Items into one large iterator.

pub fn reduce<OP, ID>(self, identity: ID, op: OP) -> Self::Item where
    ID: Fn() -> Self::Item + Sync + Send,
    OP: Fn(Self::Item, Self::Item) -> Self::Item + Sync + Send, 

Reduces the items in the iterator into one item using op. The argument identity should be a closure that can produce “identity” value which may be inserted into the sequence as needed to create opportunities for parallel execution. So, for example, if you are doing a summation, then identity() ought to produce something that represents the zero for your type (but consider just calling sum() in that case).

pub fn reduce_with<OP>(self, op: OP) -> Option<Self::Item> where
    OP: Fn(Self::Item, Self::Item) -> Self::Item + Sync + Send, 

Reduces the items in the iterator into one item using op. If the iterator is empty, None is returned; otherwise, Some is returned.

pub fn try_reduce<T, OP, ID>(self, identity: ID, op: OP) -> Self::Item where
    ID: Fn() -> T + Sync + Send,
    OP: Fn(T, T) -> Self::Item + Sync + Send,
    Self::Item: Try,
    <Self::Item as Try>::Ok == T, 

Reduces the items in the iterator into one item using a fallible op. The identity argument is used the same way as in reduce().

pub fn try_reduce_with<T, OP>(self, op: OP) -> Option<Self::Item> where
    OP: Fn(T, T) -> Self::Item + Sync + Send,
    Self::Item: Try,
    <Self::Item as Try>::Ok == T, 

Reduces the items in the iterator into one item using a fallible op.

pub fn fold<T, ID, F>(self, identity: ID, fold_op: F) -> Fold<Self, ID, F> where
    T: Send,
    F: Fn(T, Self::Item) -> T + Sync + Send,
    ID: Fn() -> T + Sync + Send, 

Parallel fold is similar to sequential fold except that the sequence of items may be subdivided before it is folded. Consider a list of numbers like 22 3 77 89 46. If you used sequential fold to add them (fold(0, |a,b| a+b), you would wind up first adding 0 + 22, then 22 + 3, then 25 + 77, and so forth. The parallel fold works similarly except that it first breaks up your list into sublists, and hence instead of yielding up a single sum at the end, it yields up multiple sums. The number of results is nondeterministic, as is the point where the breaks occur.

pub fn fold_with<F, T>(self, init: T, fold_op: F) -> FoldWith<Self, T, F> where
    T: Send + Clone,
    F: Fn(T, Self::Item) -> T + Sync + Send, 

Applies fold_op to the given init value with each item of this iterator, finally producing the value for further use.

pub fn try_fold<T, R, ID, F>(
    self,
    identity: ID,
    fold_op: F
) -> TryFold<Self, R, ID, F> where
    F: Fn(T, Self::Item) -> R + Sync + Send,
    R: Try<Ok = T> + Send,
    ID: Fn() -> T + Sync + Send, 

Performs a fallible parallel fold.

pub fn try_fold_with<F, T, R>(
    self,
    init: T,
    fold_op: F
) -> TryFoldWith<Self, R, F> where
    T: Clone + Send,
    F: Fn(T, Self::Item) -> R + Sync + Send,
    R: Try<Ok = T> + Send, 

Performs a fallible parallel fold with a cloneable init value.

pub fn sum<S>(self) -> S where
    S: Send + Sum<Self::Item> + Sum<S>, 

Sums up the items in the iterator.

pub fn product<P>(self) -> P where
    P: Send + Product<Self::Item> + Product<P>, 

Multiplies all the items in the iterator.

pub fn min(self) -> Option<Self::Item> where
    Self::Item: Ord, 

Computes the minimum of all the items in the iterator. If the iterator is empty, None is returned; otherwise, Some(min) is returned.

pub fn min_by<F>(self, f: F) -> Option<Self::Item> where
    F: Sync + Send + Fn(&Self::Item, &Self::Item) -> Ordering, 

Computes the minimum of all the items in the iterator with respect to the given comparison function. If the iterator is empty, None is returned; otherwise, Some(min) is returned.

pub fn min_by_key<K, F>(self, f: F) -> Option<Self::Item> where
    F: Sync + Send + Fn(&Self::Item) -> K,
    K: Ord + Send, 

Computes the item that yields the minimum value for the given function. If the iterator is empty, None is returned; otherwise, Some(item) is returned.

pub fn max(self) -> Option<Self::Item> where
    Self::Item: Ord, 

Computes the maximum of all the items in the iterator. If the iterator is empty, None is returned; otherwise, Some(max) is returned.

pub fn max_by<F>(self, f: F) -> Option<Self::Item> where
    F: Sync + Send + Fn(&Self::Item, &Self::Item) -> Ordering, 

Computes the maximum of all the items in the iterator with respect to the given comparison function. If the iterator is empty, None is returned; otherwise, Some(min) is returned.

pub fn max_by_key<K, F>(self, f: F) -> Option<Self::Item> where
    F: Sync + Send + Fn(&Self::Item) -> K,
    K: Ord + Send, 

Computes the item that yields the maximum value for the given function. If the iterator is empty, None is returned; otherwise, Some(item) is returned.

pub fn chain<C>(
    self,
    chain: C
) -> Chain<Self, <C as IntoParallelIterator>::Iter> where
    C: IntoParallelIterator<Item = Self::Item>, 

Takes two iterators and creates a new iterator over both.

pub fn find_any<P>(self, predicate: P) -> Option<Self::Item> where
    P: Fn(&Self::Item) -> bool + Sync + Send, 

Searches for some item in the parallel iterator that matches the given predicate and returns it. This operation is similar to find on sequential iterators but the item returned may not be the first one in the parallel sequence which matches, since we search the entire sequence in parallel.

pub fn find_first<P>(self, predicate: P) -> Option<Self::Item> where
    P: Fn(&Self::Item) -> bool + Sync + Send, 

Searches for the sequentially first item in the parallel iterator that matches the given predicate and returns it.

pub fn find_last<P>(self, predicate: P) -> Option<Self::Item> where
    P: Fn(&Self::Item) -> bool + Sync + Send, 

Searches for the sequentially last item in the parallel iterator that matches the given predicate and returns it.

pub fn find_map_any<P, R>(self, predicate: P) -> Option<R> where
    P: Fn(Self::Item) -> Option<R> + Sync + Send,
    R: Send, 

Applies the given predicate to the items in the parallel iterator and returns any non-None result of the map operation.

pub fn find_map_first<P, R>(self, predicate: P) -> Option<R> where
    P: Fn(Self::Item) -> Option<R> + Sync + Send,
    R: Send, 

Applies the given predicate to the items in the parallel iterator and returns the sequentially first non-None result of the map operation.

pub fn find_map_last<P, R>(self, predicate: P) -> Option<R> where
    P: Fn(Self::Item) -> Option<R> + Sync + Send,
    R: Send, 

Applies the given predicate to the items in the parallel iterator and returns the sequentially last non-None result of the map operation.

pub fn any<P>(self, predicate: P) -> bool where
    P: Fn(Self::Item) -> bool + Sync + Send, 

Searches for some item in the parallel iterator that matches the given predicate, and if so returns true. Once a match is found, we’ll attempt to stop process the rest of the items. Proving that there’s no match, returning false, does require visiting every item.

pub fn all<P>(self, predicate: P) -> bool where
    P: Fn(Self::Item) -> bool + Sync + Send, 

Tests that every item in the parallel iterator matches the given predicate, and if so returns true. If a counter-example is found, we’ll attempt to stop processing more items, then return false.

pub fn while_some<T>(self) -> WhileSome<Self> where
    Self: ParallelIterator<Item = Option<T>>,
    T: Send, 

Creates an iterator over the Some items of this iterator, halting as soon as any None is found.

pub fn panic_fuse(self) -> PanicFuse<Self>

Wraps an iterator with a fuse in case of panics, to halt all threads as soon as possible.

pub fn collect<C>(self) -> C where
    C: FromParallelIterator<Self::Item>, 

Creates a fresh collection containing all the elements produced by this parallel iterator.

pub fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB) where
    Self: ParallelIterator<Item = (A, B)>,
    B: Send,
    A: Send,
    FromA: Default + Send + ParallelExtend<A>,
    FromB: Default + Send + ParallelExtend<B>, 

Unzips the items of a parallel iterator into a pair of arbitrary ParallelExtend containers.

pub fn partition<A, B, P>(self, predicate: P) -> (A, B) where
    P: Fn(&Self::Item) -> bool + Sync + Send,
    B: Default + Send + ParallelExtend<Self::Item>,
    A: Default + Send + ParallelExtend<Self::Item>, 

Partitions the items of a parallel iterator into a pair of arbitrary ParallelExtend containers. Items for which the predicate returns true go into the first container, and the rest go into the second.

pub fn partition_map<A, B, P, L, R>(self, predicate: P) -> (A, B) where
    P: Fn(Self::Item) -> Either<L, R> + Sync + Send,
    B: Default + Send + ParallelExtend<R>,
    A: Default + Send + ParallelExtend<L>,
    L: Send,
    R: Send, 

Partitions and maps the items of a parallel iterator into a pair of arbitrary ParallelExtend containers. Either::Left items go into the first container, and Either::Right items go into the second.

pub fn intersperse(self, element: Self::Item) -> Intersperse<Self> where
    Self::Item: Clone, 

Intersperses clones of an element between items of this iterator.

pub fn opt_len(&self) -> Option<usize>

Internal method used to define the behavior of this parallel iterator. You should not need to call this directly.