Click or drag to resize

QueryableExtensionMethodsStandardDeviationAsyncTSource, TColumnType Method (IQueryableTSource, ExpressionFuncTSource, TColumnType)

Async variant of StandardDeviation.

Namespace:  SD.LLBLGen.Pro.LinqSupportClasses
Assembly:  SD.LLBLGen.Pro.ORMSupportClasses (in SD.LLBLGen.Pro.ORMSupportClasses.dll) Version: 5.9.0.0 (5.9.0)
Syntax
public static Task<double> StandardDeviationAsync<TSource, TColumnType>(
	this IQueryable<TSource> source,
	Expression<Func<TSource, TColumnType>> selector
)

Parameters

source
Type: System.LinqIQueryableTSource
The source.
selector
Type: System.Linq.ExpressionsExpressionFuncTSource, TColumnType
The selector.

Type Parameters

TSource
The type of the source.
TColumnType
The type of the column type.

Return Value

Type: TaskDouble
The standard deviation over the values in the column specified by selector.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQueryableTSource. 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).
Remarks
doesn't apply DISTINCT. If you want the standard deviation over only distinct values, use the overload which accepts a boolean.
See Also