Collection(TRecord, TTime).Max(TKey, TComparable) Method (Expression(Func(TRecord, TKey)), Expression(Func(TRecord, TComparable)))

CollectionTRecord, TTimeMaxTKey, TComparable Method (ExpressionFuncTRecord, TKey, ExpressionFuncTRecord, TComparable)

Naiad Help

[This is preliminary documentation and is subject to change.]

Groups records using the supplied key selector, and computes the maximum value in each group.

Namespace: Microsoft.Research.Naiad.Frameworks.DifferentialDataflow
Assembly: Microsoft.Research.Naiad.DifferentialDataflow (in Microsoft.Research.Naiad.DifferentialDataflow.dll) Version: 0.5.0.0 (0.5.0.0)

Syntax

Copy

Collection<TRecord, TTime> Max<TKey, TComparable>(
	Expression<Func<TRecord, TKey>> keySelector,
	Expression<Func<TRecord, TComparable>> comparableSelector
)
where TKey : Object, IEquatable<TKey>
where TComparable : Object, IComparable<TComparable>

Parameters

keySelector: Type: System.Linq.ExpressionsExpressionFuncTRecord, TKey
Function that extracts a key from each record.
comparableSelector: Type: System.Linq.ExpressionsExpressionFuncTRecord, TComparable
Function that extracts the portion of a record to be used in the comparison.

Type Parameters

TKey: The key type.
TComparable: The type of values to be used for comparison.

Return Value

Type: CollectionTRecord, TTime
The collection of maximum-valued records in each group.

Reference

CollectionTRecord, TTime Interface

Max Overload

Microsoft.Research.Naiad.Frameworks.DifferentialDataflow Namespace