Method map

future-java/src/main/java/io/trane/future/ValueFuture.java:20–27

(final Function<? super T, ? extends R> f)

  }

  @Override
  public final <R> Future<R> map(final Function<? super T, ? extends R> f) {
    try {
      return new ValueFuture<>(f.apply(value));
    } catch (final Throwable ex) {
      return new ExceptionFuture<>(ex);
    }
  }

  @Override
  public final <R> Future<R> flatMap(final Function<? super T, ? extends Future<R>> f) {