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Scala TreeSet forall()用法及代碼示例


在 Scala TreeSet class,則forall()方法用於檢查謂詞是否對TreeSet的所有元素成立。

函數定義: def forall(p: (A) => Boolean): Boolean

返回類型: It returns true if the predicate holds true for all the elements of the TreeSet or else returns false.



範例1:

// Scala program of forall()  
// method  
  
// Import TreeSet 
import scala.collection.mutable._
  
// 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) 
          
    }  
} 
輸出:
TreeSet(2, 4, 6, 7, 8, 9)
All the elements are divisible by 7: false

範例2:

// Scala program of forall()  
// method  
  
// Import TreeSet 
import scala.collection.mutable._
  
// 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) 
          
    }  
} 
輸出:
TreeSet(2, 4, 6, 8)
All the elements are even: true


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注:本文由純淨天空篩選整理自rupesh_rao大神的英文原創作品 Scala TreeSet forall() 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。