Java IntStream anyMatch()用法及代码示例

IntStream anyMatch(IntPredicate谓词)返回此流的任何元素是否与提供的谓词匹配。如果不一定要确定结果，则可能不会评估所有元素上的谓词。这是短路端子操作。如果出现无限输入时，端子操作可能会在有限时间内终止，则该端子操作会发生短路。
用法:

boolean anyMatch(IntPredicate predicate)

Where, IntPredicate represents a predicate (boolean-valued function) 
of one int-valued argument and the function returns true if any 
elements of the stream match the provided predicate, 
otherwise false.

注意：如果流为空，则返回false，并且不对该谓词求值。

示例1:anyMatch()函数，用于检查列表中的任何元素是否满足给定条件。

// Java code for IntStream anyMatch 
// (Predicate predicate) to check whether 
// any element of this stream match 
// the provided predicate. 
import java.util.*; 
import java.util.stream.IntStream; 
  
class GFG { 
  
    // Driver code 
    public static void main(String[] args) 
    { 
  
        // Creating an IntStream 
        IntStream stream = IntStream.of(1, 2, 3, 4, 5, 6); 
  
        // Stream anyMatch(Predicate predicate) 
        boolean answer = stream.anyMatch(num -> (num - 5) > 0); 
  
        // Displaying the result 
        System.out.println(answer); 
    } 
}

输出：

true

示例2:anyMatch()函数，用于检查流中任何元素的平方根是否大于8。

// Java code for IntStream anyMatch 
// (Predicate predicate) to check whether 
// any element of this stream match 
// the provided predicate. 
import java.util.*; 
import java.util.stream.IntStream; 
  
class GFG { 
  
    // Driver code 
    public static void main(String[] args) 
    { 
  
        // Creating an IntStream 
        IntStream stream = IntStream.of(10, 20, 30, 40, 50); 
  
        // Stream anyMatch(Predicate predicate) 
        boolean answer = stream.anyMatch(num -> Math.sqrt(num) > 8); 
  
        // Displaying the result 
        System.out.println(answer); 
    } 
}

输出：

false

示例3:anyMatch()函数，以显示如果流为空，则返回false。

// Java code for IntStream anyMatch 
// (Predicate predicate) to check whether 
// any element of this stream match 
// the provided predicate. 
import java.util.*; 
import java.util.stream.IntStream; 
  
class GFG { 
  
    // Driver code 
    public static void main(String[] args) 
    { 
  
        // Creating an empty IntStream 
        IntStream stream = IntStream.empty(); 
  
        boolean answer = stream.anyMatch(num -> true); 
  
        // Displaying the result 
        System.out.println(answer); 
    } 
}

输出：

false

相关用法

注：本文由纯净天空筛选整理自Sahil_Bansall大神的英文原创作品 IntStream anyMatch() in Java with examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。