Java IntStream anyMatch()用法及代碼示例

IntStream anyMatch(IntPredicate謂詞)返回此流的任何元素是否與提供的謂詞匹配。如果不一定要確定結果，則可能不會評估所有元素上的謂詞。這是短路端子操作。如果出現無限輸入時，端子操作可能會在有限時間內終止，則該端子操作會發生短路。
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：如果流為空，則返回false，並且不對該謂詞求值。

示例1:anyMatch()函數，用於檢查列表中的任何元素是否滿足給定條件。

// 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); 
    } 
}

輸出：

true

示例2:anyMatch()函數，用於檢查流中任何元素的平方根是否大於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); 
    } 
}

輸出：

false

示例3:anyMatch()函數，以顯示如果流為空，則返回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); 
    } 
}

輸出：

false

相關用法

注：本文由純淨天空篩選整理自Sahil_Bansall大神的英文原創作品 IntStream anyMatch() in Java with examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。