带有示例的 Scala ListSet exists() 方法
在 Scala ListSet 中,exists() 方法用于检查给定谓词是否满足 listSet 的元素。
Method Definition: def exists(p: (A) => Boolean): Boolean
Return Type: It returns true if the stated predicate holds true for some elements of the listset else it returns false.
示例 1:
// Scala program of exists()
// method
import scala.collection.immutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating Listset
val m1 = ListSet(1, 2, 3, 4, 5, 7)
// Applying exists method
val result = m1.exists(_==9)
// Displays output
println(result)
}
}
输出:
false
示例 2:
// Scala program of exists()
// method
import scala.collection.immutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating listset
val m1 = ListSet(1, 2, 3, 4, 5, 7)
// Applying exists method
val result = m1.exists(_>9)
// Displays output
println(result)
}
}
输出:
false