Module itertools::structs

The concrete iterator types.

Structs

Batching	A “meta iterator adaptor”. Its closure receives a reference to the iterator and may pick off as many elements as it likes, to produce the next iterator element.
Chunk	An iterator for the elements in a single chunk.
Chunks	An iterator that yields the Chunk iterators.
CircularTupleWindows	An iterator over all windows,wrapping back to the first elements when the window would otherwise exceed the length of the iterator, producing tuples of a specific size.
Combinations	An iterator to iterate through all the k-length combinations in an iterator.
CombinationsWithReplacement	An iterator to iterate through all the n-length combinations in an iterator, with replacement.
ConsTuples	An iterator that maps an iterator of tuples like ((A, B), C) to an iterator of (A, B, C).
ExactlyOneError	Iterator returned for the error case of IterTools::exactly_one() This iterator yields exactly the same elements as the input iterator.
FilterMapOk	An iterator adapter to filter and apply a transformation on values within a nested Result::Ok.
FilterOk	An iterator adapter to filter values within a nested Result::Ok.
Format	Format all iterator elements lazily, separated by sep.
FormatWith	Format all iterator elements lazily, separated by sep.
Group	An iterator for the elements in a single group.
GroupBy	GroupBy is the storage for the lazy grouping operation.
GroupingMap	GroupingMap is an intermediate struct for efficient group-and-fold operations. It groups elements by their key and at the same time fold each group using some aggregating operation.
Groups	An iterator that yields the Group iterators.
Interleave	An iterator adaptor that alternates elements from two iterators until both run out.
InterleaveShortest	An iterator adaptor that alternates elements from the two iterators until one of them runs out.
IntersperseWith	An iterator adaptor to insert a particular value created by a function between each element of the adapted iterator.
IntoChunks	ChunkLazy is the storage for a lazy chunking operation.
Iterate	An iterator that infinitely applies function to value and yields results.
KMergeBy	An iterator adaptor that merges an abitrary number of base iterators according to an ordering function.
MergeBy	An iterator adaptor that merges the two base iterators in ascending order. If both base iterators are sorted (ascending), the result is sorted.
MergeJoinBy	An iterator adaptor that merge-joins items from the two base iterators in ascending order.
MultiPeek	See multipeek() for more information.
MultiProduct	An iterator adaptor that iterates over the cartesian product of multiple iterators of type I.
PadUsing	An iterator adaptor that pads a sequence to a minimum length by filling missing elements using a closure.
PeekNth	See peek_nth() for more information.
PeekingTakeWhile	An iterator adaptor that takes items while a closure returns true.
Permutations	An iterator adaptor that iterates through all the k-permutations of the elements from an iterator.
Positions	An iterator adapter to get the positions of each element that matches a predicate.
Powerset	An iterator to iterate through the powerset of the elements from an iterator.
ProcessResults	An iterator that produces only the T values as long as the inner iterator produces Ok(T).
Product	An iterator adaptor that iterates over the cartesian product of the element sets of two iterators I and J.
PutBack	An iterator adaptor that allows putting back a single item to the front of the iterator.
PutBackN	An iterator adaptor that allows putting multiple items in front of the iterator.
RcIter	A wrapper for Rc<RefCell<I>>, that implements the Iterator trait.
RepeatCall	Deprecated See repeat_call for more information.
RepeatN	An iterator that produces n repetitions of an element.
Step	Deprecated An iterator adaptor that steps a number elements in the base iterator for each iteration.
TakeWhileRef	An iterator adaptor that borrows from a Clone-able iterator to only pick off elements while the predicate returns true.
Tee	One half of an iterator pair where both return the same elements.
TupleBuffer	An iterator over a incomplete tuple.
TupleCombinations	An iterator to iterate through all combinations in a Clone-able iterator that produces tuples of a specific size.
TupleWindows	An iterator over all contiguous windows that produces tuples of a specific size.
Tuples	An iterator that groups the items in tuples of a specific size.
Unfold	See unfold for more information.
Unique	An iterator adapter to filter out duplicate elements.
UniqueBy	An iterator adapter to filter out duplicate elements.
Update	An iterator adapter to apply a mutating function to each element before yielding it.
WhileSome	An iterator adaptor that filters Option<A> iterator elements and produces A. Stops on the first None encountered.
WithPosition	An iterator adaptor that wraps each element in an Position.
Zip	See multizip for more information.
ZipEq	An iterator which iterates two other iterators simultaneously
ZipLongest	An iterator which iterates two other iterators simultaneously

Type Definitions

Coalesce	An iterator adaptor that may join together adjacent elements.
Dedup	An iterator adaptor that removes repeated duplicates.
DedupBy	An iterator adaptor that removes repeated duplicates, determining equality using a comparison function.
DedupByWithCount	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.
DedupWithCount	An iterator adaptor that removes repeated duplicates, while keeping a count of how many repeated elements were present.
GroupingMapBy	GroupingMapBy is an intermediate struct for efficient group-and-fold operations.
Intersperse	An iterator adaptor to insert a particular value between each element of the adapted iterator.
KMerge	An iterator adaptor that merges an abitrary number of base iterators in ascending order. If all base iterators are sorted (ascending), the result is sorted.
MapInto	An iterator adapter to apply Into conversion to each element.
MapOk	An iterator adapter to apply a transformation within a nested Result::Ok.
MapResults	Deprecated See MapOk.
Merge	An iterator adaptor that merges the two base iterators in ascending order. If both base iterators are sorted (ascending), the result is sorted.