Streams

发表于 | 分类于 |

Stream 操作的是元素，可迭代，可遍历。
可迭代放入 Collection 集合接口，

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
43
44
45
public interface Collection<E> extends Iterable<E> {
    Iterator<E> iterator();

    default Spliterator<E> spliterator() {
        return Spliterators.spliterator(this, 0);
    }

    default Stream<E> stream() {
        return StreamSupport.stream(spliterator(), false);
    }

    default Stream<E> parallelStream() {
        return StreamSupport.stream(spliterator(), true);
    }
}


public interface Spliterator<T> {

    long estimateSize();

    boolean tryAdvance(Consumer<? super T> action);

    default void forEachRemaining(Consumer<? super T> action) {
        do { } while (tryAdvance(action));
    }
}


public abstract class CountedCompleter<T> extends ForkJoinTask<T> {
    public abstract void compute();

    protected final boolean exec() {
        compute();
        return false;
    }

    public T getRawResult() { return null; }
}

public abstract class ForkJoinTask<V> implements Future<V>, Serializable {

    protected abstract boolean exec();

}