Scala immutable TreeSet find()用法及代码示例

在Scala中一成不变TreeSet class，则find()方法用于返回满足TreeSet中给定谓词的元素。

Method Definition: def find(p:(A) => Boolean):Option[A]

Return Type: It returns the first element that satisfies a given predicate if present or else it returns None.

范例1：

// Scala program of find()  
// method  
  
// Import TreeSet 
import scala.collection.immutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating TreeSet 
        val t1 = TreeSet(2, 4, 6, 7, 8, 9)  
          
        // Print the TreeSet 
        println(t1)  
          
        // Applying find() method   
        val result = t1.find(x => {x % 7 == 0}) 
          
        // Displays output  
        println("Element divisible by 7:" + result) 
          
    }  
}

输出：

TreeSet(2, 4, 6, 7, 8, 9)
Element divisible by 7:Some(7)

范例2：

// Scala program of find()  
// method  
  
// Import TreeSet 
import scala.collection.immutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating TreeSet 
        val t1 = TreeSet(2, 4, 6, 7, 8, 9)  
          
        // Print the TreeSet 
        println(t1)  
          
        // Applying find() method   
        val result = t1.find(x => {x % 10 == 0}) 
          
        // Displays output  
        println("Element divisible by 10:" + result) 
          
    }  
}

输出：

TreeSet(2, 4, 6, 7, 8, 9)
Element divisible by 10:None

相关用法

注：本文由纯净天空筛选整理自Shivam_k大神的英文原创作品 Scala immutable TreeSet find() method。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。