Scala Mutable SortedMap dropRight() 方法与示例
dropRight()方法用于删除最后的“n”个元素。
Method Definition: def dropRight(n: Int): SortedMap[A, B]
Return Type: It returns all the elements of the SortedMap except the last ‘n’ elements.
示例 #1:
// Scala program of dropRight()
// method
import scala.collection.SortedMap
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a SortedMap
val m1 = SortedMap("geeks" -> 5, "for" -> 3, "cs" -> 5)
// Applying dropRight method
val result = m1.dropRight(1)
// Displays output
println(result)
}
}
输出:
Map(cs -> 5, for -> 3)
示例 #2:
// Scala program of dropRight()
// method
import scala.collection.SortedMap
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a SortedMap
val m1 = SortedMap("geeks" -> 5, "for" -> 3)
// Applying dropRight method
val result = m1.dropRight(2)
// Displays output
println(result)
}
}
输出:
Map()
所以,这里返回一个空的 SortedMap,因为 SortedMap 的所有元素都被删除了。