firstPresent<A, B, R> function

FirstPresent<A, B, R> firstPresent<A, B, R>(
  1. R mapper(
    1. A first,
    2. Optional<B> second
    )
)

Implementation

FirstPresent<A, B, R> firstPresent<A, B, R>(final R Function(A first, Optional<B> second) mapper) => FirstPresent<A, B, R>(mapper);