Crate iterextd

Adapters that extend Iterator functionality.

Variable step

use iterextd::IterExtd;

let logic_fn = |s: &mut usize| { if *s == 0 { *s = 1; 1 } else { *s += 1; *s } };
let iter = (0..18).step_by_fn(logic_fn);
let vec = iter.collect::<Vec<_>>();
assert_eq!(vec, vec![0, 2, 5, 9, 14]);

Collect a zeroed array

use iterextd::IterExtd;

let arr = [1u8, 2, 3, 4, 5, 6, 7, 8, 9, 10];
let iter = arr.iter().filter(|elem| *elem % 2 == 0).copied();
let arr: (usize, [u8; 10]) = iter.collect_arr_zeroed();
assert_eq!(arr, (5, [2, 4, 6, 8, 10, 0, 0, 0, 0, 0]));

Collect windows from arrays.

use iterextd::IterExtd;

 let arr = [0, 1, 2, 3, 4, 5, 6, 7];
 let iter = arr.into_iter();
 let iter = iter.clone().map_iters(iter.previous(1).skip(2), |self_iter, arg_iter| {
     let (pre_elem, elem) = arg_iter.next()?; Some([self_iter.next()?, pre_elem, elem]) });
 let vec = iter.collect::<Vec<_>>();
 assert_eq!(vec, vec![[0, 1, 2], [1, 2, 3], [2, 3, 4], [3, 4, 5], [4, 5, 6], [5, 6, 7]]);

Structs

• ArrChunks
  Returns an iterator of arrays with N elements.
• ArrayCloned
  An iterator that clones the array elements of the base iterator.
• ArrayCopied
  An iterator that copies the array elements of the base iterator.
• CombineIters
  Combine two iterators in pieces, specifying the length of each separately.
• GenRangeBounds
  An iterator that allows creating RangeInclusive slice boundaries.
• InclusiveStepBy
  Iterator to step iterators by a given amount including the first and last element.
• LastTaken
  An iterator adapter that preserves the element of the last iteration.
• MapByThree
  An iterator that yields three elements each iteration.
• MapByTwo
  An iterator that yields two elements each iteration.
• MapIters
  Iterator adapter which provides two iterators for its closure at each iteration.
• Previous
  An iterator adapter that retains the current element on each iteration.
• RangeIcvToTup
  An iterator that converts a RangeInclusive at each iteration to a tuple.
• RangeToTup
  An iterator that converts a Range at each iteration to a tuple.
• SkipStepBy
  Iterator adapter with skip and step capabilities in one.
• SliceCopied
  An iterator that copies the slice elements of the base iterator at each iteration.
• SliceModify
  An iterator that allows modification of a slice.
• StepBoundary
  An iterator to determine the boundaries of each step in a sequence.
• StepByFn
  Iterator adapter, with variable step.
• TupToRange
  An iterator that converts a tuple at each iteration to a Range.
• TupToRangeIcv
  An iterator that converts a tuple at each iteration to a RangeInclusive.
• TupleImut
  Immutable tuple iterator.
• TupleMut
  Mutable tuple iterator.

Traits

• IterExtd
  Trait extends the functionality of the standard iterator.
• SliceModifyIter
  Iterator with external slice indexing.
• SwapIter
  An iterator adapter that swaps elements in two sequences.
• TupleIntoIter
  Tuple iterator, adds the ability to get elements by value.
• TupleIter
  A trait that allows iterating over a tuple.
• TupleIternitern
  A trait that allows iteration over N elements of a tuple.