JobBuilderReduceTKey, TValue, TOutput Method (IOperationInput, ActionTKey, IEnumerableTValue, RecordWriterTOutput, RecordReuseMode)

public StageOperation Reduce<TKey, TValue, TOutput>(
	IOperationInput input,
	Action<TKey, IEnumerable<TValue>, RecordWriter<TOutput>> reducer,
	RecordReuseMode recordReuse = RecordReuseMode.Default
)
where TKey : Object, IComparable<TKey>

Public Function Reduce(Of TKey As {Object, IComparable(Of TKey)}, TValue, TOutput) ( 
	input As IOperationInput,
	reducer As Action(Of TKey, IEnumerable(Of TValue), RecordWriter(Of TOutput)),
	Optional recordReuse As RecordReuseMode = RecordReuseMode.Default
) As StageOperation

public:
generic<typename TKey, typename TValue, typename TOutput>
where TKey : Object, IComparable<TKey>
StageOperation^ Reduce(
	IOperationInput^ input, 
	Action<TKey, IEnumerable<TValue>^, RecordWriter<TOutput>^>^ reducer, 
	RecordReuseMode recordReuse = RecordReuseMode::Default
)

member Reduce : 
        input : IOperationInput * 
        reducer : Action<'TKey, IEnumerable<'TValue>, RecordWriter<'TOutput>> * 
        ?recordReuse : RecordReuseMode 
(* Defaults:
        let _recordReuse = defaultArg recordReuse RecordReuseMode.Default
*)
-> StageOperation  when 'TKey : Object and IComparable<'TKey>