Window<TKey,TSource>.CountNotNull<TValue> Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Computes a time-sensitive count aggregate of the non-null values using "snapshot windows" (SI terminology).
public Microsoft.StreamProcessing.Aggregates.IAggregate<TSource,ulong,ulong> CountNotNull<TValue> (System.Linq.Expressions.Expression<Func<TSource,TValue>> selector);member this.CountNotNull : System.Linq.Expressions.Expression<Func<'Source, 'Value>> -> Microsoft.StreamProcessing.Aggregates.IAggregate<'Source, uint64, uint64>Public Function CountNotNull(Of TValue) (selector As Expression(Of Func(Of TSource, TValue))) As IAggregate(Of TSource, ULong, ULong)Type Parameters
- TValue
Parameters
- selector
- Expression<Func<TSource,TValue>>