Java 中的双流顺序()
原文:https://www.geeksforgeeks.org/doublestream-sequential-java/
双流顺序()返回顺序双流。它可能会自己返回，要么是因为流已经是顺序的，要么是因为基础流状态被修改为顺序的。
双流顺序()是一个 中间操作 。中间操作在流实例上被调用，在它们完成处理后，它们给出一个流实例作为输出。
语法:
DoubleStream sequential()
Where, DoubleStream is a sequence of primitive
double-valued element.
返回值:一个连续的双流。 示例 1 : 双流顺序()返回顺序双流。
// Java code for DoubleStream sequential()
// to return a sequential DoubleStream.
import java.util.*;
import java.util.stream.DoubleStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// Creating an DoubleStream
DoubleStream stream = DoubleStream.of(3.3, 5.4, 9.2,
12.1, 14.4);
// Using DoubleStream sequential()
DoubleStream streamNew = stream.sequential();
// Displaying sequential DoubleStream
streamNew.forEach(System.out::println);
}
}
Output:
3.3
5.4
9.2
12.1
14.4
示例 2 : 空双流上的双流顺序()。
// Java code for DoubleStream sequential()
// on empty DoubleStream
import java.util.*;
import java.util.stream.DoubleStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// Creating an empty DoubleStream
DoubleStream stream = DoubleStream.empty();
// To check if it is parallel or not
System.out.println("parallel : " + stream.isParallel());
stream = stream.parallel();
// To check if it is parallel or not
System.out.println("parallel : " + stream.isParallel());
stream = stream.sequential();
// To check if it is parallel or not
System.out.println("parallel : " + stream.isParallel());
}
}
Output:
parallel : false
parallel : true
parallel : false
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