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。