IEnumerable_Reduce.Reduce<TItem, TReduction> (IEnumerable<TItem>, TReduction, Func<TItemTReductionTReduction>) Method

public static TReduction Reduce<TItem, TReduction>( 
   this IEnumerable<TItem> itemsIn, 
   TReduction useInitialValue, 
   Func<TItem, TReduction, TReduction> byApplying 
)

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Type Parameters

TItem

The type of the enumeration items to be aggregated.

TReduction

The type of aggregation result, commonly, but not restricted to, a numeric scalar value like int, float, decimal, etc.

Parameters

itemsIn

Type: IEnumerable<TItem>

The enumeration to be aggregated.

useInitialValue

Type: TReduction

The aggregation initial value.

byApplying

Type: Func<TItem, TReduction, TReduction>

The aggregation function to be applied on each of the enumeration items, which are injected alongside with the previous iteration aggregation result, as arguments into this function when called.

Return Value

Windows, Windows Server, OS X, macOS, iOS, tvOS, Android, Linux, AWS, Azure

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Others