Iterator

System\Linq\AnyAll.cs (1)

24if (source is Iterator<TSource> iterator)

System\Linq\AppendPrepend.cs (2)

101private protected override Iterator<TSource> Clone() => new AppendPrepend1Iterator<TSource>(_source, _item, _appending); 191private protected override Iterator<TSource> Clone() => new AppendPrependN<TSource>(_source, _prepended, _appended, _prependCount, _appendCount);

System\Linq\AppendPrepend.SpeedOpt.cs (2)

124if (_source is Iterator<TSource> iterator) 273if (_source is Iterator<TSource> iterator)

System\Linq\Cast.cs (2)

45private sealed partial class CastICollectionIterator<TResult>(ICollection source) : Iterator<TResult> 50private protected override Iterator<TResult> Clone() => new CastICollectionIterator<TResult>(_source);

System\Linq\Concat.cs (2)

68private protected override Iterator<TSource> Clone() => new Concat2Iterator<TSource>(_first, _second); 154private protected override Iterator<TSource> Clone() => new ConcatNIterator<TSource>(_tail, _head, _headIndex, _hasOnlyCollections);

System\Linq\Count.cs (2)

24if (source is Iterator<TSource> iterator) 111if (source is Iterator<TSource> iterator)

System\Linq\DefaultIfEmpty.cs (1)

42private protected override Iterator<TSource> Clone() => new DefaultIfEmptyIterator<TSource>(_source, _default);

System\Linq\DefaultIfEmpty.SpeedOpt.cs (1)

39count = _source is Iterator<TSource> iterator ? iterator.GetCount(onlyIfCheap: true) : -1;

System\Linq\Distinct.cs (1)

109private protected override Iterator<TSource> Clone() => new DistinctIterator<TSource>(_source, _comparer);

System\Linq\ElementAt.cs (2)

27source is Iterator<TSource> iterator ? iterator.TryGetElementAt(index, out found) : 127source is Iterator<TSource> iterator ? iterator.TryGetElementAt(index, out found) :

System\Linq\First.cs (1)

74source is Iterator<TSource> iterator ? iterator.TryGetFirst(out found) :

System\Linq\Grouping.cs (4)

144private protected override Iterator<TResult> Clone() => new GroupByResultIterator<TSource, TKey, TElement, TResult>(_source, _keySelector, _elementSelector, _resultSelector, _comparer); 200private protected override Iterator<TResult> Clone() => new GroupByResultIterator<TSource, TKey, TResult>(_source, _keySelector, _resultSelector, _comparer); 256private protected override Iterator<IGrouping<TKey, TElement>> Clone() => new GroupByIterator<TSource, TKey, TElement>(_source, _keySelector, _elementSelector, _comparer); 309private protected override Iterator<IGrouping<TKey, TSource>> Clone() => new GroupByIterator<TSource, TKey>(_source, _keySelector, _comparer);

System\Linq\Iterator.cs (3)

49private protected abstract Iterator<TSource> Clone(); 72public Iterator<TSource> GetEnumerator() 74Iterator<TSource> enumerator = _state == 0 && _threadId == Environment.CurrentManagedThreadId ? this : Clone();

System\Linq\Iterator.SpeedOpt.cs (4)

36/// <returns>An <see cref="Iterator{TSource}"/> with the first <paramref name="count"/> items removed, or null if known empty.</returns> 37public virtual Iterator<TSource>? Skip(int count) => new IEnumerableSkipTakeIterator<TSource>(this, count, -1); 43/// <returns>An <see cref="Iterator{TSource}"/> with only the first <paramref name="count"/> items, or null if known empty.</returns> 44public virtual Iterator<TSource>? Take(int count) => new IEnumerableSkipTakeIterator<TSource>(this, 0, count - 1);

System\Linq\Last.cs (1)

73source is Iterator<TSource> iterator ? iterator.TryGetLast(out found) :

System\Linq\OfType.cs (2)

30private sealed partial class OfTypeIterator<TResult>(IEnumerable source) : Iterator<TResult> 35private protected override Iterator<TResult> Clone() => new OfTypeIterator<TResult>(_source);

System\Linq\OrderedEnumerable.cs (2)

93private protected override Iterator<TElement> Clone() => new OrderedIterator<TElement, TKey>(_source, _keySelector, _comparer, _descending, _parent); 185private protected override Iterator<TElement> Clone() => new ImplicitlyStableOrderedIterator<TElement>(_source, _descending);

System\Linq\OrderedEnumerable.SpeedOpt.cs (6)

56if (_source is Iterator<TElement> iterator) 140public override Iterator<TElement> Skip(int count) => new SkipTakeOrderedIterator<TElement>(this, count, int.MaxValue); 142public override Iterator<TElement> Take(int count) => new SkipTakeOrderedIterator<TElement>(this, 0, count - 1); 459private protected override Iterator<TElement> Clone() => new SkipTakeOrderedIterator<TElement>(_source, _minIndexInclusive, _maxIndexInclusive); 510public override Iterator<TElement>? Skip(int count) 516public override Iterator<TElement> Take(int count)

System\Linq\Range.cs (1)

48private protected override Iterator<int> Clone() => new RangeIterator(_start, _end - _start);

System\Linq\Range.SpeedOpt.cs (2)

40public override Iterator<int>? Skip(int count) 50public override Iterator<int> Take(int count)

System\Linq\Repeat.cs (1)

42private protected override Iterator<TResult> Clone()

System\Linq\Repeat.SpeedOpt.cs (2)

36public override Iterator<TResult>? Skip(int count) 48public override Iterator<TResult> Take(int count)

System\Linq\Reverse.cs (1)

41private protected override Iterator<TSource> Clone() => new ReverseIterator<TSource>(_source);

System\Linq\Reverse.SpeedOpt.cs (2)

58if (_source is Iterator<TSource> iterator) 94if (_source is Iterator<TSource> iterator)

System\Linq\Select.cs (5)

26if (source is Iterator<TSource> iterator) 107private protected override Iterator<TResult> Clone() => 170private protected override Iterator<TResult> Clone() => new ArraySelectIterator<TSource, TResult>(_source, _selector); 213private protected override Iterator<TResult> Clone() => new ListSelectIterator<TSource, TResult>(_source, _selector); 263private protected override Iterator<TResult> Clone() => new IListSelectIterator<TSource, TResult>(_source, _selector);

System\Linq\Select.SpeedOpt.cs (22)

System\Linq\SelectMany.cs (1)

162private protected override Iterator<TResult> Clone()

System\Linq\Skip.cs (2)

26if (source is Iterator<TSource>) 34else if (source is Iterator<TSource> iterator)

System\Linq\SkipTake.SpeedOpt.cs (9)

32private protected override Iterator<TSource> Clone() => 55public override Iterator<TSource>? Skip(int count) 61public override Iterator<TSource> Take(int count) 233private protected override Iterator<TSource> Clone() => 327public override Iterator<TSource>? Skip(int count) 353public override Iterator<TSource> Take(int count) 388if (_source is Iterator<TSource> iterator) 411if (_source is Iterator<TSource> iterator) 431if (_source is Iterator<TSource> iterator &&

System\Linq\Take.SpeedOpt.cs (4)

17source is Iterator<TSource> iterator ? (iterator.Take(count) ?? Empty<TSource>()) : 28source is Iterator<TSource> iterator ? TakeIteratorRange(iterator, startIndex, endIndex) : 32static IEnumerable<TSource> TakeIteratorRange(Iterator<TSource> iterator, int startIndex, int endIndex) 34Iterator<TSource>? source;

System\Linq\ToCollection.cs (2)

15if (source is Iterator<TSource> iterator) 68if (source is Iterator<TSource> iterator)

System\Linq\Union.cs (2)

226private protected override Iterator<TSource> Clone() => new UnionIterator2<TSource>(_first, _second, _comparer); 265private protected override Iterator<TSource> Clone() => new UnionIteratorN<TSource>(_sources, _headIndex, _comparer);

System\Linq\Where.cs (7)

24if (source is Iterator<TSource> iterator) 102private protected override Iterator<TSource> Clone() => new IEnumerableWhereIterator<TSource>(_source, _predicate); 166private protected override Iterator<TSource> Clone() => 214private protected override Iterator<TSource> Clone() => 271private protected override Iterator<TResult> Clone() => 320private protected override Iterator<TResult> Clone() => 375private protected override Iterator<TResult> Clone() =>