LongCount< TSource >() [1/2]

static long System.Linq.ParallelEnumerable.LongCount< TSource > ( this ParallelQuery< TSource > source )

inlinestatic

Definition at line 774 of file ParallelEnumerable.cs.

    {
        if (source == null)
        {
            throw new ArgumentNullException("source");
        }
        if (source is ParallelEnumerableWrapper<TSource> { WrappedEnumerable: ICollection<TSource> wrappedEnumerable })
        {
            return wrappedEnumerable.Count;
        }
        return new LongCountAggregationOperator<TSource>(source).Aggregate();
    }

References System.Collections.Generic.Dictionary< TKey, TValue >.Count, and System.Linq.source.