Interface Initializer<VAgg>
- Type Parameters:
VAgg- aggregate value type
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
The
Initializer interface for creating an initial value in aggregations. Initializer is used in combination with Aggregator.- See Also:
Method Summary
Method Details
apply
VAgg apply()Return the initial value for an aggregation.- Returns:
- the initial value for an aggregation