IQueryable Aggregate<TSource>(IQueryable<TSource>, Expression<Func<TSource, TSource, TSource>>) Aggregate<TSource, TAccumulate>(IQueryable<TSource>, TAccumulate, Expression<Func<TAccumulate, TSource, TAccumulate>>) Aggregate<TSource, TAccumulate, TResult>(IQueryable<TSource>, TAccumulate, Expression<Func<TAccumulate, TSource, TAccumulate>>, Expression<Func<TAccumulate, TResult>>) All<TSource> Any<TSource>(IQueryable<TSource>) Any<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) AsQueryable(IEnumerable) AsQueryable<TElement>(IEnumerable<TElement>) Average(IQueryable<Decimal>) Average(IQueryable<Nullable<Decimal>>) Average(IQueryable<Double>) Average(IQueryable<Nullable<Double>>) Average(IQueryable<Int32>) Average(IQueryable<Nullable<Int32>>) Average(IQueryable<Int64>) Average(IQueryable<Nullable<Int64>>) Average(IQueryable<Nullable<Single>>) Average(IQueryable<Single>) Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Decimal>>) Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Double>>) Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int32>>) Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int64>>) Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Decimal>>>) Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Double>>>) Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int32>>>) Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int64>>>) Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Single>>>) Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Single>>) Cast<TResult> Concat<TSource> Contains<TSource>(IQueryable<TSource>, TSource) Contains<TSource>(IQueryable<TSource>, TSource, IEqualityComparer<TSource>) Count<TSource>(IQueryable<TSource>) Count<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) DefaultIfEmpty<TSource>(IQueryable<TSource>) DefaultIfEmpty<TSource>(IQueryable<TSource>, TSource) Distinct<TSource>(IQueryable<TSource>) Distinct<TSource>(IQueryable<TSource>, IEqualityComparer<TSource>) ElementAt<TSource> ElementAtOrDefault<TSource> Except<TSource>(IQueryable<TSource>, IEnumerable<TSource>) Except<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) First<TSource>(IQueryable<TSource>) First<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) FirstOrDefault<TSource>(IQueryable<TSource>) FirstOrDefault<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) GroupBy<TSource, TKey>(IQueryable<TSource>, Expression<Func<TSource, TKey>>) GroupBy<TSource, TKey>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, IEqualityComparer<TKey>) GroupBy<TSource, TKey, TElement>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TSource, TElement>>) GroupBy<TSource, TKey, TResult>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TKey, IEnumerable<TSource>, TResult>>) GroupBy<TSource, TKey, TElement>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TSource, TElement>>, IEqualityComparer<TKey>) GroupBy<TSource, TKey, TResult>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TKey, IEnumerable<TSource>, TResult>>, IEqualityComparer<TKey>) GroupBy<TSource, TKey, TElement, TResult>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TSource, TElement>>, Expression<Func<TKey, IEnumerable<TElement>, TResult>>) GroupBy<TSource, TKey, TElement, TResult>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TSource, TElement>>, Expression<Func<TKey, IEnumerable<TElement>, TResult>>, IEqualityComparer<TKey>) GroupJoin<TOuter, TInner, TKey, TResult>(IQueryable<TOuter>, IEnumerable<TInner>, Expression<Func<TOuter, TKey>>, Expression<Func<TInner, TKey>>, Expression<Func<TOuter, IEnumerable<TInner>, TResult>>) GroupJoin<TOuter, TInner, TKey, TResult>(IQueryable<TOuter>, IEnumerable<TInner>, Expression<Func<TOuter, TKey>>, Expression<Func<TInner, TKey>>, Expression<Func<TOuter, IEnumerable<TInner>, TResult>>, IEqualityComparer<TKey>) Intersect<TSource>(IQueryable<TSource>, IEnumerable<TSource>) Intersect<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) Join<TOuter, TInner, TKey, TResult>(IQueryable<TOuter>, IEnumerable<TInner>, Expression<Func<TOuter, TKey>>, Expression<Func<TInner, TKey>>, Expression<Func<TOuter, TInner, TResult>>) Join<TOuter, TInner, TKey, TResult>(IQueryable<TOuter>, IEnumerable<TInner>, Expression<Func<TOuter, TKey>>, Expression<Func<TInner, TKey>>, Expression<Func<TOuter, TInner, TResult>>, IEqualityComparer<TKey>) Last<TSource>(IQueryable<TSource>) Last<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) LastOrDefault<TSource>(IQueryable<TSource>) LastOrDefault<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) LongCount<TSource>(IQueryable<TSource>) LongCount<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) Max<TSource>(IQueryable<TSource>) Max<TSource, TResult>(IQueryable<TSource>, Expression<Func<TSource, TResult>>) Min<TSource>(IQueryable<TSource>) Min<TSource, TResult>(IQueryable<TSource>, Expression<Func<TSource, TResult>>) OfType<TResult> OrderBy<TSource, TKey>(IQueryable<TSource>, Expression<Func<TSource, TKey>>) OrderBy<TSource, TKey>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, IComparer<TKey>) OrderByDescending<TSource, TKey>(IQueryable<TSource>, Expression<Func<TSource, TKey>>) OrderByDescending<TSource, TKey>(IQueryable<TSource>, Expression<Func<TSource, TKey>>, IComparer<TKey>) Reverse<TSource> Select<TSource, TResult>(IQueryable<TSource>, Expression<Func<TSource, TResult>>) Select<TSource, TResult>(IQueryable<TSource>, Expression<Func<TSource, Int32, TResult>>) SelectMany<TSource, TResult>(IQueryable<TSource>, Expression<Func<TSource, IEnumerable<TResult>>>) SelectMany<TSource, TResult>(IQueryable<TSource>, Expression<Func<TSource, Int32, IEnumerable<TResult>>>) SelectMany<TSource, TCollection, TResult>(IQueryable<TSource>, Expression<Func<TSource, IEnumerable<TCollection>>>, Expression<Func<TSource, TCollection, TResult>>) SelectMany<TSource, TCollection, TResult>(IQueryable<TSource>, Expression<Func<TSource, Int32, IEnumerable<TCollection>>>, Expression<Func<TSource, TCollection, TResult>>) SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>) SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) Single<TSource>(IQueryable<TSource>) Single<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) SingleOrDefault<TSource>(IQueryable<TSource>) SingleOrDefault<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) Skip<TSource> SkipWhile<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) SkipWhile<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int32, Boolean>>) Sum(IQueryable<Decimal>) Sum(IQueryable<Nullable<Decimal>>) Sum(IQueryable<Double>) Sum(IQueryable<Nullable<Double>>) Sum(IQueryable<Int32>) Sum(IQueryable<Nullable<Int32>>) Sum(IQueryable<Int64>) Sum(IQueryable<Nullable<Int64>>) Sum(IQueryable<Nullable<Single>>) Sum(IQueryable<Single>) Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Decimal>>) Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Double>>) Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int32>>) Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int64>>) Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Decimal>>>) Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Double>>>) Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int32>>>) Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int64>>>) Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Single>>>) Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Single>>) Take<TSource> TakeWhile<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) TakeWhile<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int32, Boolean>>) ThenBy<TSource, TKey>(IOrderedQueryable<TSource>, Expression<Func<TSource, TKey>>) ThenBy<TSource, TKey>(IOrderedQueryable<TSource>, Expression<Func<TSource, TKey>>, IComparer<TKey>) ThenByDescending<TSource, TKey>(IOrderedQueryable<TSource>, Expression<Func<TSource, TKey>>) ThenByDescending<TSource, TKey>(IOrderedQueryable<TSource>, Expression<Func<TSource, TKey>>, IComparer<TKey>) Union<TSource>(IQueryable<TSource>, IEnumerable<TSource>) Union<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) Where<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>) Where<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int32, Boolean>>) Zip<TFirst, TSecond, TResult>	IEnumerable Aggregate<TSource>(IEnumerable<TSource>, Func<TSource, TSource, TSource>) Aggregate<TSource, TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>) Aggregate<TSource, TAccumulate, TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>, Func<TAccumulate, TResult>) All<TSource> Any<TSource>(IEnumerable<TSource>) Any<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) AsEnumerable<TSource> Average(IEnumerable<Decimal>) Average(IEnumerable<Nullable<Decimal>>) Average(IEnumerable<Double>) Average(IEnumerable<Nullable<Double>>) Average(IEnumerable<Int32>) Average(IEnumerable<Nullable<Int32>>) Average(IEnumerable<Int64>) Average(IEnumerable<Nullable<Int64>>) Average(IEnumerable<Nullable<Single>>) Average(IEnumerable<Single>) Average<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>) Average<TSource>(IEnumerable<TSource>, Func<TSource, Double>) Average<TSource>(IEnumerable<TSource>, Func<TSource, Int32>) Average<TSource>(IEnumerable<TSource>, Func<TSource, Int64>) Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>) Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>) Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>) Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>) Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>) Average<TSource>(IEnumerable<TSource>, Func<TSource, Single>) Cast<TResult> Concat<TSource> Contains<TSource>(IEnumerable<TSource>, TSource) Contains<TSource>(IEnumerable<TSource>, TSource, IEqualityComparer<TSource>) Count<TSource>(IEnumerable<TSource>) Count<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) DefaultIfEmpty<TSource>(IEnumerable<TSource>) DefaultIfEmpty<TSource>(IEnumerable<TSource>, TSource) Distinct<TSource>(IEnumerable<TSource>) Distinct<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>) ElementAt<TSource> ElementAtOrDefault<TSource> Empty<TResult> Except<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) Except<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) First<TSource>(IEnumerable<TSource>) First<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) FirstOrDefault<TSource>(IEnumerable<TSource>) FirstOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) GroupBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) GroupBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IEqualityComparer<TKey>) GroupBy<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>) GroupBy<TSource, TKey, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TKey, IEnumerable<TSource>, TResult>) GroupBy<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, IEqualityComparer<TKey>) GroupBy<TSource, TKey, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TKey, IEnumerable<TSource>, TResult>, IEqualityComparer<TKey>) GroupBy<TSource, TKey, TElement, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, Func<TKey, IEnumerable<TElement>, TResult>) GroupBy<TSource, TKey, TElement, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, Func<TKey, IEnumerable<TElement>, TResult>, IEqualityComparer<TKey>) GroupJoin<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, IEnumerable<TInner>, TResult>) GroupJoin<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>) Intersect<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) Intersect<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) Join<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, TInner, TResult>) Join<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, TInner, TResult>, IEqualityComparer<TKey>) Last<TSource>(IEnumerable<TSource>) Last<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) LastOrDefault<TSource>(IEnumerable<TSource>) LastOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) LongCount<TSource>(IEnumerable<TSource>) LongCount<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Max(IEnumerable<Decimal>) Max(IEnumerable<Nullable<Decimal>>) Max(IEnumerable<Double>) Max(IEnumerable<Nullable<Double>>) Max(IEnumerable<Int32>) Max(IEnumerable<Nullable<Int32>>) Max(IEnumerable<Int64>) Max(IEnumerable<Nullable<Int64>>) Max(IEnumerable<Nullable<Single>>) Max(IEnumerable<Single>) Max<TSource>(IEnumerable<TSource>) Max<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>) Max<TSource>(IEnumerable<TSource>, Func<TSource, Double>) Max<TSource>(IEnumerable<TSource>, Func<TSource, Int32>) Max<TSource>(IEnumerable<TSource>, Func<TSource, Int64>) Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>) Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>) Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>) Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>) Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>) Max<TSource>(IEnumerable<TSource>, Func<TSource, Single>) Max<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>) Min(IEnumerable<Decimal>) Min(IEnumerable<Nullable<Decimal>>) Min(IEnumerable<Double>) Min(IEnumerable<Nullable<Double>>) Min(IEnumerable<Int32>) Min(IEnumerable<Nullable<Int32>>) Min(IEnumerable<Int64>) Min(IEnumerable<Nullable<Int64>>) Min(IEnumerable<Nullable<Single>>) Min(IEnumerable<Single>) Min<TSource>(IEnumerable<TSource>) Min<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>) Min<TSource>(IEnumerable<TSource>, Func<TSource, Double>) Min<TSource>(IEnumerable<TSource>, Func<TSource, Int32>) Min<TSource>(IEnumerable<TSource>, Func<TSource, Int64>) Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>) Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>) Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>) Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>) Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>) Min<TSource>(IEnumerable<TSource>, Func<TSource, Single>) Min<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>) OfType<TResult> OrderBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) OrderBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>) OrderByDescending<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) OrderByDescending<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>) Range Repeat<TResult> Reverse<TSource> Select<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>) Select<TSource, TResult>(IEnumerable<TSource>, Func<TSource, Int32, TResult>) SelectMany<TSource, TResult>(IEnumerable<TSource>, Func<TSource, IEnumerable<TResult>>) SelectMany<TSource, TResult>(IEnumerable<TSource>, Func<TSource, Int32, IEnumerable<TResult>>) SelectMany<TSource, TCollection, TResult>(IEnumerable<TSource>, Func<TSource, IEnumerable<TCollection>>, Func<TSource, TCollection, TResult>) SelectMany<TSource, TCollection, TResult>(IEnumerable<TSource>, Func<TSource, Int32, IEnumerable<TCollection>>, Func<TSource, TCollection, TResult>) SequenceEqual<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) SequenceEqual<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) Single<TSource>(IEnumerable<TSource>) Single<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) SingleOrDefault<TSource>(IEnumerable<TSource>) SingleOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Skip<TSource> SkipWhile<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) SkipWhile<TSource>(IEnumerable<TSource>, Func<TSource, Int32, Boolean>) Sum(IEnumerable<Decimal>) Sum(IEnumerable<Nullable<Decimal>>) Sum(IEnumerable<Double>) Sum(IEnumerable<Nullable<Double>>) Sum(IEnumerable<Int32>) Sum(IEnumerable<Nullable<Int32>>) Sum(IEnumerable<Int64>) Sum(IEnumerable<Nullable<Int64>>) Sum(IEnumerable<Nullable<Single>>) Sum(IEnumerable<Single>) Sum<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>) Sum<TSource>(IEnumerable<TSource>, Func<TSource, Double>) Sum<TSource>(IEnumerable<TSource>, Func<TSource, Int32>) Sum<TSource>(IEnumerable<TSource>, Func<TSource, Int64>) Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>) Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>) Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>) Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>) Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>) Sum<TSource>(IEnumerable<TSource>, Func<TSource, Single>) Take<TSource> TakeWhile<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) TakeWhile<TSource>(IEnumerable<TSource>, Func<TSource, Int32, Boolean>) ThenBy<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>) ThenBy<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>) ThenByDescending<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>) ThenByDescending<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>) ToArray<TSource> ToDictionary<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) ToDictionary<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IEqualityComparer<TKey>) ToDictionary<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>) ToDictionary<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, IEqualityComparer<TKey>) ToList<TSource> ToLookup<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) ToLookup<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IEqualityComparer<TKey>) ToLookup<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>) ToLookup<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, IEqualityComparer<TKey>) Union<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) Union<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) Where<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Where<TSource>(IEnumerable<TSource>, Func<TSource, Int32, Boolean>) Zip<TFirst, TSecond, TResult>