MongoQueryable.StandardDeviationPopulationAsync<TSource> Method (IMongoQueryable<TSource>, Expression<Func<TSource, Decimal>>, CancellationToken) |
Computes the population standard deviation of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Namespace:
MongoDB.Driver.Linq
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.5.0+57.Branch.master.Sha.6a4e00a2d91090c65a9b11364b9ebfdb9c7da076
Syntax public static Task<decimal> StandardDeviationPopulationAsync<TSource>(
this IMongoQueryable<TSource> source,
Expression<Func<TSource, decimal>> selector,
CancellationToken cancellationToken = null
)
<ExtensionAttribute>
Public Shared Function StandardDeviationPopulationAsync(Of TSource) (
source As IMongoQueryable(Of TSource),
selector As Expression(Of Func(Of TSource, Decimal)),
Optional cancellationToken As CancellationToken = Nothing
) As Task(Of Decimal)
[<ExtensionAttribute>]
static member StandardDeviationPopulationAsync :
source : IMongoQueryable<'TSource> *
selector : Expression<Func<'TSource, decimal>> *
?cancellationToken : CancellationToken
(* Defaults:
let _cancellationToken = defaultArg cancellationToken null
*)
-> Task<decimal>
Parameters
- source
- Type: MongoDB.Driver.Linq.IMongoQueryable<TSource>
A sequence of values to calculate the population standard deviation of. - selector
- Type: System.Linq.Expressions.Expression<Func<TSource, Decimal>>
A transform function to apply to each element. - cancellationToken (Optional)
- Type: System.Threading.CancellationToken
The cancellation token.
Type Parameters
- TSource
- The type of the elements of source.
Return Value
Type:
Task<Decimal>
The population standard deviation of the sequence of values.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
IMongoQueryable<TSource>. 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).
See Also