join<R> abstract method

R join<R>(
  1. R mapFirst(
    1. First
    ),
  2. R mapSecond(
    1. Second
    ),
  3. R mapThird(
    1. Third
    )
)

Implementation

R join<R>(
  R Function(First) mapFirst,
  R Function(Second) mapSecond,
  R Function(Third) mapThird,
);