GetCount()

int System.Linq.Enumerable.ReverseIterator< TSource >.GetCount ( bool onlyIfCheap )

inline

Definition at line 1498 of file Enumerable.cs.

        {
            if (onlyIfCheap)
            {
                IEnumerable<TSource> source = _source;
                if (!(source is IIListProvider<TSource> iIListProvider))
                {
                    if (!(source is ICollection<TSource> { Count: var count }))
                    {
                        if (!(source is ICollection { Count: var count2 }))
                        {
                            return -1;
                        }
                        return count2;
                    }
                    return count;
                }
                return iIListProvider.GetCount(onlyIfCheap: true);
            }
            return _source.Count();
        }

References System.Linq.Enumerable.ReverseIterator< TSource >._source, System.Linq.count, and System.Linq.source.