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Scala immutable TreeSet exists()用法及代碼示例


在Scala中一成不變TreeSet class,exists() 方法用於檢查謂詞是否適用於 TreeSet 的任何元素。

Method Definition: def exists(p:(A) => Boolean):Boolean

Return Type: It returns true if the predicate holds true for any of the elements of the TreeSet or else returns false.

範例1:


// Scala program of exists() 
// method 
  
// Import TreeSet
import scala.collection.immutable._
  
// Creating object 
object GfG 
{ 
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating TreeSet
        val t1 = TreeSet(1, 3, 2, 7, 6, 5) 
          
        // Print the TreeSet
        println(t1) 
          
        // Applying exists() method  
        val result = t1.exists(x => {x % 7 == 0})
          
        // Displays output 
        println("Element divisible by 7 exists:" + result)
          
    } 
} 
輸出:
TreeSet(1, 2, 3, 5, 6, 7)
Element divisible by 7 exists:true

範例2:


// Scala program of exists() 
// method 
  
// Import TreeSet
import scala.collection.immutable._
  
// Creating object 
object GfG 
{ 
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating TreeSet
        val t1 = TreeSet(1, 3, 2, 7, 6, 5) 
          
        // Print the TreeSet
        println(t1) 
          
        // Applying exists() method  
        val result = t1.exists(x => {x == 10})
          
        // Displays output 
        println("Element 10 exists:" + result)
          
    } 
} 
輸出:
TreeSet(1, 2, 3, 5, 6, 7)
Element 10 exists:false



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注:本文由純淨天空篩選整理自Shivam_k大神的英文原創作品 Scala immutable TreeSet exists() method with example。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。