在Scala中,不可變的TreeSet類map()方法用於通過將函數應用於給定TreeSet的所有元素來構建新的TreeSet。
Method Definition: def map[B](f:(A) => B):TreeSet[B]
Return Type: It returns a new TreeSet containing all the elements after applying the given function.
範例1:
// Scala program of map()
// method
// Import TreeSet
import scala.collection.immutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating TreeSet
val q1 = TreeSet(1, 2, 3, 4, 5)
// Print the TreeSet
println(q1)
// Applying map method
val result = q1.map(x => x*x)
// Displays output
print("TreeSet with squared elements:" + result)
}
}
輸出:
TreeSet(1, 2, 3, 4, 5) TreeSet with squared elements:TreeSet(1, 4, 9, 16, 25)
範例2:
// Scala program of map()
// method
// Import TreeSet
import scala.collection.immutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating TreeSet
val q1 = TreeSet(1, 2, 3, 4, 5)
// Print the TreeSet
println(q1)
// Applying map method
val result = q1.map(x => x*x*x)
// Displays output
print("TreeSet with cubed elements:" + result)
}
}
輸出:
TreeSet(1, 2, 3, 4, 5) TreeSet with cubed elements:TreeSet(1, 8, 27, 64, 125)
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注:本文由純淨天空篩選整理自Shivam_k大神的英文原創作品 Scala immutable TreeSet map() method。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。