package lambdasinaction.chap5;
import lambdasinaction.chap4.*;
import java.util.stream.*;
import java.util.*;
import static lambdasinaction.chap4.Dish.menu;
public class Reducing{
public static void main(String...args){
List<Integer> numbers = Arrays.asList(3,4,5,1,2);
int sum = numbers.stream().reduce(0, (a, b) -> a + b);
System.out.println(sum);
int sum2 = numbers.stream().reduce(0, Integer::sum);
System.out.println(sum2);
int max = numbers.stream().reduce(0, (a, b) -> Integer.max(a, b));
System.out.println(max);
Optional<Integer> min = numbers.stream().reduce(Integer::min);
min.ifPresent(System.out::println);
int calories = menu.stream()
.map(Dish::getCalories)
.reduce(0, Integer::sum);
System.out.println("Number of calories:" + calories);
}
}