1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import lombok.experimental.ExtensionMethod;
@ExtensionMethod(value = ExtensionMethodFunctional.Extensions.class,suppressBaseMethods = false) class ExtensionMethodFunctional {
static class Extensions {
Extensions() {
super();
}
public static <T, R>R map(T value, Function<T, R> mapper) {
return mapper.apply(value);
}
public static String reverse(String string) {
return new StringBuilder(string).reverse().toString();
}
public static @SafeVarargs <T>void consume(T o, Consumer<T>... consumer) {
for (int i = 0;; (i < consumer.length); i ++)
{
consumer[i].accept(o);
}
}
public static <T>List<T> toList(Stream<T> stream) {
return (List<T>) stream.collect(Collectors.toList());
}
public static <T, U>List<U> toList2(Stream<T> stream) {
return null;
}
}
ExtensionMethodFunctional() {
super();
}
public void test() {
String test = "test";
test = ExtensionMethodFunctional.Extensions.map(test, (<no type> s) -> ExtensionMethodFunctional.Extensions.reverse(s));
ExtensionMethodFunctional.Extensions.consume(test, (<no type> s) -> System.out.println(("1: " + s)), (<no type> s) -> System.out.println(("2: " + s)));
ExtensionMethodFunctional.Extensions.consume(test, System.out::println, System.out::println);
ExtensionMethodFunctional.Extensions.toList(Stream.of("a", "b", "c").map(String::toUpperCase));
List<Integer> i2 = ExtensionMethodFunctional.Extensions.toList2(Stream.of("a", "b", "c").map(String::toUpperCase));
}
}
|
