/**
* Łączenie list w jeden łańcuch znakowy
*
* @param p lista osób do połączenia
*/
public static void joinStrings(List<Person> p) {
long l1 = System.nanoTime();
String s1 = "";
for (Person p1 : p) {
s1 += p1.toString() + "\n";
}
long l2 = System.nanoTime();
// System.out.println(s1);
// System.out.println("================================================");
long l3 = System.nanoTime();
String s2 = joinFrom(p, "\n").toString();
long l4 = System.nanoTime();
// System.out.println(s2);
System.out.println("lambda/classic : " + (l4 - l3) / (l2 - l1));
}
/**
* Ekstraktownie zadanej własności do listy
*
* @param p
*/
public static void extraktowanie(List<Person> p) {
long l1 = System.nanoTime();
List<String> names1 = new ArrayList<String>();
for (Person pers : p) {
names1.add(pers.getName());
}
long l2 = System.nanoTime();
long l3 = System.nanoTime();
List<String> names2 = extract(p, on(Person.class).getName());
long l4 = System.nanoTime();
// StartLambda.print.each(names1);
// System.out.println("===============================================");
// StartLambda.print.each(names2);
// System.out.println("===============================================");
System.out.println("lambda/classic : " + (((double) (l4 - l3)) / ((double) (l2 - l1))));
}