Method Aggregate

Aggregate<T, TAccumulate1, TAccumulate2, TResult>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, Func<TAccumulate1, TAccumulate2, TResult>)

Applies two accumulators sequentially in a single pass over a sequence.

Declaration

public static TResult Aggregate<T, TAccumulate1, TAccumulate2, TResult>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, Func<TAccumulate1, TAccumulate2, TResult> resultSelector)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
Func<TAccumulate1, TAccumulate2, TResult>	resultSelector	A function that projects a single result given the result of each accumulator.

Returns

Type	Description
TResult	The value returned by resultSelector.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TResult	The type of the accumulated result.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate, TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>, Func<TAccumulate, TResult>).

This operator uses multiple seeds and aggregates and passes the final values to resultSelector.

Exceptions

Type	Condition
ArgumentNullException	source, resultSelector or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>)

Applies two accumulators sequentially in a single pass over a sequence.

Declaration

public static (TAccumulate1, TAccumulate2) Aggregate<T, TAccumulate1, TAccumulate2>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.

Returns

Type	Description
(TAccumulate1, TAccumulate2)	A (T1, T2) containing the result of each accumulator.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>).

This operator uses multiple seeds and aggregates and returns the final values in a (T1, T2)

Exceptions

Type	Condition
ArgumentNullException	source or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TResult>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, Func<TAccumulate1, TAccumulate2, TAccumulate3, TResult>)

Applies three accumulators sequentially in a single pass over a sequence.

Declaration

public static TResult Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TResult>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, Func<TAccumulate1, TAccumulate2, TAccumulate3, TResult> resultSelector)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
Func<TAccumulate1, TAccumulate2, TAccumulate3, TResult>	resultSelector	A function that projects a single result given the result of each accumulator.

Returns

Type	Description
TResult	The value returned by resultSelector.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TResult	The type of the accumulated result.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate, TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>, Func<TAccumulate, TResult>).

This operator uses multiple seeds and aggregates and passes the final values to resultSelector.

Exceptions

Type	Condition
ArgumentNullException	source, resultSelector or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>)

Applies three accumulators sequentially in a single pass over a sequence.

Declaration

public static (TAccumulate1, TAccumulate2, TAccumulate3) Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.

Returns

Type	Description
(TAccumulate1, TAccumulate2, TAccumulate3)	A (T1, T2, T3) containing the result of each accumulator.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>).

This operator uses multiple seeds and aggregates and returns the final values in a (T1, T2, T3)

Exceptions

Type	Condition
ArgumentNullException	source or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TResult>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, TAccumulate4, Func<TAccumulate4, T, TAccumulate4>, Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TResult>)

Applies four accumulators sequentially in a single pass over a sequence.

Declaration

public static TResult Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TResult>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, TAccumulate4 seed4, Func<TAccumulate4, T, TAccumulate4> accumulator4, Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TResult> resultSelector)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
TAccumulate4	seed4	The seed value for the fourth accumulator.
Func<TAccumulate4, T, TAccumulate4>	accumulator4	The fourth accumulator.
Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TResult>	resultSelector	A function that projects a single result given the result of each accumulator.

Returns

Type	Description
TResult	The value returned by resultSelector.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TAccumulate4	The type of the fourth accumulator value.
TResult	The type of the accumulated result.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate, TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>, Func<TAccumulate, TResult>).

This operator uses multiple seeds and aggregates and passes the final values to resultSelector.

Exceptions

Type	Condition
ArgumentNullException	source, resultSelector or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, TAccumulate4, Func<TAccumulate4, T, TAccumulate4>)

Applies four accumulators sequentially in a single pass over a sequence.

Declaration

public static (TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4) Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, TAccumulate4 seed4, Func<TAccumulate4, T, TAccumulate4> accumulator4)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
TAccumulate4	seed4	The seed value for the fourth accumulator.
Func<TAccumulate4, T, TAccumulate4>	accumulator4	The fourth accumulator.

Returns

Type	Description
(TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4)	A (T1, T2, T3, T4) containing the result of each accumulator.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TAccumulate4	The type of the fourth accumulator value.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>).

This operator uses multiple seeds and aggregates and returns the final values in a (T1, T2, T3, T4)

Exceptions

Type	Condition
ArgumentNullException	source or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TResult>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, TAccumulate4, Func<TAccumulate4, T, TAccumulate4>, TAccumulate5, Func<TAccumulate5, T, TAccumulate5>, Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TResult>)

Applies five accumulators sequentially in a single pass over a sequence.

Declaration

public static TResult Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TResult>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, TAccumulate4 seed4, Func<TAccumulate4, T, TAccumulate4> accumulator4, TAccumulate5 seed5, Func<TAccumulate5, T, TAccumulate5> accumulator5, Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TResult> resultSelector)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
TAccumulate4	seed4	The seed value for the fourth accumulator.
Func<TAccumulate4, T, TAccumulate4>	accumulator4	The fourth accumulator.
TAccumulate5	seed5	The seed value for the fifth accumulator.
Func<TAccumulate5, T, TAccumulate5>	accumulator5	The fifth accumulator.
Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TResult>	resultSelector	A function that projects a single result given the result of each accumulator.

Returns

Type	Description
TResult	The value returned by resultSelector.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TAccumulate4	The type of the fourth accumulator value.
TAccumulate5	The type of the fifth accumulator value.
TResult	The type of the accumulated result.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate, TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>, Func<TAccumulate, TResult>).

This operator uses multiple seeds and aggregates and passes the final values to resultSelector.

Exceptions

Type	Condition
ArgumentNullException	source, resultSelector or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, TAccumulate4, Func<TAccumulate4, T, TAccumulate4>, TAccumulate5, Func<TAccumulate5, T, TAccumulate5>)

Applies five accumulators sequentially in a single pass over a sequence.

Declaration

public static (TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5) Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, TAccumulate4 seed4, Func<TAccumulate4, T, TAccumulate4> accumulator4, TAccumulate5 seed5, Func<TAccumulate5, T, TAccumulate5> accumulator5)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
TAccumulate4	seed4	The seed value for the fourth accumulator.
Func<TAccumulate4, T, TAccumulate4>	accumulator4	The fourth accumulator.
TAccumulate5	seed5	The seed value for the fifth accumulator.
Func<TAccumulate5, T, TAccumulate5>	accumulator5	The fifth accumulator.

Returns

Type	Description
(TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5)	A (T1, T2, T3, T4, T5) containing the result of each accumulator.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TAccumulate4	The type of the fourth accumulator value.
TAccumulate5	The type of the fifth accumulator value.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>).

This operator uses multiple seeds and aggregates and returns the final values in a (T1, T2, T3, T4, T5)

Exceptions

Type	Condition
ArgumentNullException	source or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TResult>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, TAccumulate4, Func<TAccumulate4, T, TAccumulate4>, TAccumulate5, Func<TAccumulate5, T, TAccumulate5>, TAccumulate6, Func<TAccumulate6, T, TAccumulate6>, Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TResult>)

Applies six accumulators sequentially in a single pass over a sequence.

Declaration

public static TResult Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TResult>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, TAccumulate4 seed4, Func<TAccumulate4, T, TAccumulate4> accumulator4, TAccumulate5 seed5, Func<TAccumulate5, T, TAccumulate5> accumulator5, TAccumulate6 seed6, Func<TAccumulate6, T, TAccumulate6> accumulator6, Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TResult> resultSelector)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
TAccumulate4	seed4	The seed value for the fourth accumulator.
Func<TAccumulate4, T, TAccumulate4>	accumulator4	The fourth accumulator.
TAccumulate5	seed5	The seed value for the fifth accumulator.
Func<TAccumulate5, T, TAccumulate5>	accumulator5	The fifth accumulator.
TAccumulate6	seed6	The seed value for the sixth accumulator.
Func<TAccumulate6, T, TAccumulate6>	accumulator6	The sixth accumulator.
Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TResult>	resultSelector	A function that projects a single result given the result of each accumulator.

Returns

Type	Description
TResult	The value returned by resultSelector.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TAccumulate4	The type of the fourth accumulator value.
TAccumulate5	The type of the fifth accumulator value.
TAccumulate6	The type of the sixth accumulator value.
TResult	The type of the accumulated result.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate, TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>, Func<TAccumulate, TResult>).

This operator uses multiple seeds and aggregates and passes the final values to resultSelector.

Exceptions

Type	Condition
ArgumentNullException	source, resultSelector or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, TAccumulate4, Func<TAccumulate4, T, TAccumulate4>, TAccumulate5, Func<TAccumulate5, T, TAccumulate5>, TAccumulate6, Func<TAccumulate6, T, TAccumulate6>)

Applies six accumulators sequentially in a single pass over a sequence.

Declaration

public static (TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6) Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, TAccumulate4 seed4, Func<TAccumulate4, T, TAccumulate4> accumulator4, TAccumulate5 seed5, Func<TAccumulate5, T, TAccumulate5> accumulator5, TAccumulate6 seed6, Func<TAccumulate6, T, TAccumulate6> accumulator6)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
TAccumulate4	seed4	The seed value for the fourth accumulator.
Func<TAccumulate4, T, TAccumulate4>	accumulator4	The fourth accumulator.
TAccumulate5	seed5	The seed value for the fifth accumulator.
Func<TAccumulate5, T, TAccumulate5>	accumulator5	The fifth accumulator.
TAccumulate6	seed6	The seed value for the sixth accumulator.
Func<TAccumulate6, T, TAccumulate6>	accumulator6	The sixth accumulator.

Returns

Type	Description
(TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6)	A (T1, T2, T3, T4, T5, T6) containing the result of each accumulator.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TAccumulate4	The type of the fourth accumulator value.
TAccumulate5	The type of the fifth accumulator value.
TAccumulate6	The type of the sixth accumulator value.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>).

This operator uses multiple seeds and aggregates and returns the final values in a (T1, T2, T3, T4, T5, T6)

Exceptions

Type	Condition
ArgumentNullException	source or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TResult>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, TAccumulate4, Func<TAccumulate4, T, TAccumulate4>, TAccumulate5, Func<TAccumulate5, T, TAccumulate5>, TAccumulate6, Func<TAccumulate6, T, TAccumulate6>, TAccumulate7, Func<TAccumulate7, T, TAccumulate7>, Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TResult>)

Applies seven accumulators sequentially in a single pass over a sequence.

Declaration

public static TResult Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TResult>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, TAccumulate4 seed4, Func<TAccumulate4, T, TAccumulate4> accumulator4, TAccumulate5 seed5, Func<TAccumulate5, T, TAccumulate5> accumulator5, TAccumulate6 seed6, Func<TAccumulate6, T, TAccumulate6> accumulator6, TAccumulate7 seed7, Func<TAccumulate7, T, TAccumulate7> accumulator7, Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TResult> resultSelector)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
TAccumulate4	seed4	The seed value for the fourth accumulator.
Func<TAccumulate4, T, TAccumulate4>	accumulator4	The fourth accumulator.
TAccumulate5	seed5	The seed value for the fifth accumulator.
Func<TAccumulate5, T, TAccumulate5>	accumulator5	The fifth accumulator.
TAccumulate6	seed6	The seed value for the sixth accumulator.
Func<TAccumulate6, T, TAccumulate6>	accumulator6	The sixth accumulator.
TAccumulate7	seed7	The seed value for the seventh accumulator.
Func<TAccumulate7, T, TAccumulate7>	accumulator7	The seventh accumulator.
Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TResult>	resultSelector	A function that projects a single result given the result of each accumulator.

Returns

Type	Description
TResult	The value returned by resultSelector.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TAccumulate4	The type of the fourth accumulator value.
TAccumulate5	The type of the fifth accumulator value.
TAccumulate6	The type of the sixth accumulator value.
TAccumulate7	The type of the seventh accumulator value.
TResult	The type of the accumulated result.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate, TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>, Func<TAccumulate, TResult>).

This operator uses multiple seeds and aggregates and passes the final values to resultSelector.

Exceptions

Type	Condition
ArgumentNullException	source, resultSelector or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, TAccumulate4, Func<TAccumulate4, T, TAccumulate4>, TAccumulate5, Func<TAccumulate5, T, TAccumulate5>, TAccumulate6, Func<TAccumulate6, T, TAccumulate6>, TAccumulate7, Func<TAccumulate7, T, TAccumulate7>)

Applies seven accumulators sequentially in a single pass over a sequence.

Declaration

public static (TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7) Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, TAccumulate4 seed4, Func<TAccumulate4, T, TAccumulate4> accumulator4, TAccumulate5 seed5, Func<TAccumulate5, T, TAccumulate5> accumulator5, TAccumulate6 seed6, Func<TAccumulate6, T, TAccumulate6> accumulator6, TAccumulate7 seed7, Func<TAccumulate7, T, TAccumulate7> accumulator7)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
TAccumulate4	seed4	The seed value for the fourth accumulator.
Func<TAccumulate4, T, TAccumulate4>	accumulator4	The fourth accumulator.
TAccumulate5	seed5	The seed value for the fifth accumulator.
Func<TAccumulate5, T, TAccumulate5>	accumulator5	The fifth accumulator.
TAccumulate6	seed6	The seed value for the sixth accumulator.
Func<TAccumulate6, T, TAccumulate6>	accumulator6	The sixth accumulator.
TAccumulate7	seed7	The seed value for the seventh accumulator.
Func<TAccumulate7, T, TAccumulate7>	accumulator7	The seventh accumulator.

Returns

Type	Description
(TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7)	A (T1, T2, T3, T4, T5, T6, T7) containing the result of each accumulator.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TAccumulate4	The type of the fourth accumulator value.
TAccumulate5	The type of the fifth accumulator value.
TAccumulate6	The type of the sixth accumulator value.
TAccumulate7	The type of the seventh accumulator value.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>).

This operator uses multiple seeds and aggregates and returns the final values in a (T1, T2, T3, T4, T5, T6, T7)

Exceptions

Type	Condition
ArgumentNullException	source or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TAccumulate8, TResult>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, TAccumulate4, Func<TAccumulate4, T, TAccumulate4>, TAccumulate5, Func<TAccumulate5, T, TAccumulate5>, TAccumulate6, Func<TAccumulate6, T, TAccumulate6>, TAccumulate7, Func<TAccumulate7, T, TAccumulate7>, TAccumulate8, Func<TAccumulate8, T, TAccumulate8>, Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TAccumulate8, TResult>)

Applies eight accumulators sequentially in a single pass over a sequence.

Declaration

public static TResult Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TAccumulate8, TResult>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, TAccumulate4 seed4, Func<TAccumulate4, T, TAccumulate4> accumulator4, TAccumulate5 seed5, Func<TAccumulate5, T, TAccumulate5> accumulator5, TAccumulate6 seed6, Func<TAccumulate6, T, TAccumulate6> accumulator6, TAccumulate7 seed7, Func<TAccumulate7, T, TAccumulate7> accumulator7, TAccumulate8 seed8, Func<TAccumulate8, T, TAccumulate8> accumulator8, Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TAccumulate8, TResult> resultSelector)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
TAccumulate4	seed4	The seed value for the fourth accumulator.
Func<TAccumulate4, T, TAccumulate4>	accumulator4	The fourth accumulator.
TAccumulate5	seed5	The seed value for the fifth accumulator.
Func<TAccumulate5, T, TAccumulate5>	accumulator5	The fifth accumulator.
TAccumulate6	seed6	The seed value for the sixth accumulator.
Func<TAccumulate6, T, TAccumulate6>	accumulator6	The sixth accumulator.
TAccumulate7	seed7	The seed value for the seventh accumulator.
Func<TAccumulate7, T, TAccumulate7>	accumulator7	The seventh accumulator.
TAccumulate8	seed8	The seed value for the eighth accumulator.
Func<TAccumulate8, T, TAccumulate8>	accumulator8	The eighth accumulator.
Func<TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TAccumulate8, TResult>	resultSelector	A function that projects a single result given the result of each accumulator.

Returns

Type	Description
TResult	The value returned by resultSelector.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TAccumulate4	The type of the fourth accumulator value.
TAccumulate5	The type of the fifth accumulator value.
TAccumulate6	The type of the sixth accumulator value.
TAccumulate7	The type of the seventh accumulator value.
TAccumulate8	The type of the eighth accumulator value.
TResult	The type of the accumulated result.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate, TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>, Func<TAccumulate, TResult>).

This operator uses multiple seeds and aggregates and passes the final values to resultSelector.

Exceptions

Type	Condition
ArgumentNullException	source, resultSelector or any of the accumulator functions is null.

Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TAccumulate8>(IEnumerable<T>, TAccumulate1, Func<TAccumulate1, T, TAccumulate1>, TAccumulate2, Func<TAccumulate2, T, TAccumulate2>, TAccumulate3, Func<TAccumulate3, T, TAccumulate3>, TAccumulate4, Func<TAccumulate4, T, TAccumulate4>, TAccumulate5, Func<TAccumulate5, T, TAccumulate5>, TAccumulate6, Func<TAccumulate6, T, TAccumulate6>, TAccumulate7, Func<TAccumulate7, T, TAccumulate7>, TAccumulate8, Func<TAccumulate8, T, TAccumulate8>)

Applies eight accumulators sequentially in a single pass over a sequence.

Declaration

public static (TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TAccumulate8) Aggregate<T, TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TAccumulate8>(this IEnumerable<T> source, TAccumulate1 seed1, Func<TAccumulate1, T, TAccumulate1> accumulator1, TAccumulate2 seed2, Func<TAccumulate2, T, TAccumulate2> accumulator2, TAccumulate3 seed3, Func<TAccumulate3, T, TAccumulate3> accumulator3, TAccumulate4 seed4, Func<TAccumulate4, T, TAccumulate4> accumulator4, TAccumulate5 seed5, Func<TAccumulate5, T, TAccumulate5> accumulator5, TAccumulate6 seed6, Func<TAccumulate6, T, TAccumulate6> accumulator6, TAccumulate7 seed7, Func<TAccumulate7, T, TAccumulate7> accumulator7, TAccumulate8 seed8, Func<TAccumulate8, T, TAccumulate8> accumulator8)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
TAccumulate1	seed1	The seed value for the first accumulator.
Func<TAccumulate1, T, TAccumulate1>	accumulator1	The first accumulator.
TAccumulate2	seed2	The seed value for the second accumulator.
Func<TAccumulate2, T, TAccumulate2>	accumulator2	The second accumulator.
TAccumulate3	seed3	The seed value for the third accumulator.
Func<TAccumulate3, T, TAccumulate3>	accumulator3	The third accumulator.
TAccumulate4	seed4	The seed value for the fourth accumulator.
Func<TAccumulate4, T, TAccumulate4>	accumulator4	The fourth accumulator.
TAccumulate5	seed5	The seed value for the fifth accumulator.
Func<TAccumulate5, T, TAccumulate5>	accumulator5	The fifth accumulator.
TAccumulate6	seed6	The seed value for the sixth accumulator.
Func<TAccumulate6, T, TAccumulate6>	accumulator6	The sixth accumulator.
TAccumulate7	seed7	The seed value for the seventh accumulator.
Func<TAccumulate7, T, TAccumulate7>	accumulator7	The seventh accumulator.
TAccumulate8	seed8	The seed value for the eighth accumulator.
Func<TAccumulate8, T, TAccumulate8>	accumulator8	The eighth accumulator.

Returns

Type	Description
(TAccumulate1, TAccumulate2, TAccumulate3, TAccumulate4, TAccumulate5, TAccumulate6, TAccumulate7, TAccumulate8)	A ValueTuple<T1, T2, T3, T4, T5, T6, T7, TRest> containing the result of each accumulator.

Type Parameters

Name	Description
T	The type of elements in source.
TAccumulate1	The type of the first accumulator value.
TAccumulate2	The type of the second accumulator value.
TAccumulate3	The type of the third accumulator value.
TAccumulate4	The type of the fourth accumulator value.
TAccumulate5	The type of the fifth accumulator value.
TAccumulate6	The type of the sixth accumulator value.
TAccumulate7	The type of the seventh accumulator value.
TAccumulate8	The type of the eighth accumulator value.

Remarks

This operator executes immediately.

Examples

For an example using a single seed and aggregate, please see Aggregate<TSource, TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>).

This operator uses multiple seeds and aggregates and returns the final values in a ValueTuple<T1, T2, T3, T4, T5, T6, T7, TRest>

Exceptions

Type	Condition
ArgumentNullException	source or any of the accumulator functions is null.