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Scala immutable TreeSet forall()用法及代码示例


在Scala中一成不变TreeSet class,则forall()方法用于检查谓词是否对TreeSet的所有元素成立。

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

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

范例1:

// Scala program of forall()  
// 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 forall() method   
        val result = t1.forall(x => {x % 7 == 0}) 
          
        // Displays output  
        println("All the elements are divisible by 7:" + result) 
          
    }  
} 
输出:
TreeSet(2, 4, 6, 7, 8, 9)
All the elements are divisible by 7:false

范例2:

// Scala program of forall()  
// 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, 8)  
          
        // Print the TreeSet 
        println(t1)  
          
        // Applying forall() method   
        val result = t1.forall(x => {x % 2 == 0}) 
          
        // Displays output  
        println("All the elements are even:" + result) 
          
    }  
} 
输出:
TreeSet(2, 4, 6, 8)
All the elements are even:true



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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 forall() 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。