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attachAggregateAttachAggregateT, R Method

Attaches a new IEnumerableT to the original IEnumerableT, created with an aggregator function.

Namespace:  WhetStone.Looping
Assembly:  WhetStone (in WhetStone.dll) Version: 1.0.4.0 (1.0.0.0)
Syntax
C#
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public static IEnumerable<Tuple<T, R>> AttachAggregate<T, R>(
	this IEnumerable<T> this,
	Func<T, R, R> aggregator,
	R seed = null
)

Parameters

this
Type: System.Collections.GenericIEnumerableT
The original IEnumerableT
aggregator
Type: SystemFuncT, R, R
The aggregator function.
seed (Optional)
Type: R
The initial seed for the aggregator function.

Type Parameters

T
The type of the original IEnumerableT.
R
The type of the output of aggregator.

Return Value

Type: IEnumerableTupleT, R
this zipped to aggregator's output.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableT. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
Examples
This can simplify complicated IEnumerableT expressions to a single line:
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var indexedTriangleNumbers = range.Range(10).AttachAggregate((a,b)=>a+b);
See Also