Streamable.CountNotNull<TKey,TPayload,TValue> Method
Definition
Important
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Computes a time-sensitive count aggregate of the non-null values using "snapshot windows" (SI terminology).
public static Microsoft.StreamProcessing.IStreamable<TKey,ulong> CountNotNull<TKey,TPayload,TValue> (this Microsoft.StreamProcessing.IStreamable<TKey,TPayload> source, System.Linq.Expressions.Expression<Func<TPayload,TValue>> selector);static member CountNotNull : Microsoft.StreamProcessing.IStreamable<'Key, 'Payload> * System.Linq.Expressions.Expression<Func<'Payload, 'Value>> -> Microsoft.StreamProcessing.IStreamable<'Key, uint64><Extension()>
Public Function CountNotNull(Of TKey, TPayload, TValue) (source As IStreamable(Of TKey, TPayload), selector As Expression(Of Func(Of TPayload, TValue))) As IStreamable(Of TKey, ULong)Type Parameters
- TKey
- TPayload
- TValue
Parameters
- source
- IStreamable<TKey,TPayload>
- selector
- Expression<Func<TPayload,TValue>>
Returns
IStreamable<TKey,UInt64>