In Scala immutable TreeSet class
, the foreach() method is utilized to apply a given function to all the elements of the TreeSet.
Method Definition: def foreach[U](f: (A) => U): Unit
Return Type: It returns all the elements of the TreeSet after applying the given function to each of them.
Example #1:
// Scala program of foreach() // method // Import TreeSet import scala.collection.immutable. _
// Creating object object GfG
{ // Main method
def main(args : Array[String])
{
// Creating TreeSet
val t 1 = TreeSet( 2 , 4 , 6 , 7 , 8 , 9 )
// Print the TreeSet
println(t 1 )
// Applying foreach method to print the TreeSet
print( "Elements in the TreeSet: " )
t 1 .foreach(x => print(x + " " ))
}
} |
Output:
TreeSet(2, 4, 6, 7, 8, 9) Elements in the TreeSet: 2 4 6 7 8 9
Example #2:
// Scala program of foreach() // method // Import TreeSet import scala.collection.immutable. _
// Creating object object GfG
{ // Main method
def main(args : Array[String])
{
// Creating TreeSet
val t 1 = TreeSet( 2 , 4 , 6 , 7 , 8 , 9 )
// Print the TreeSet
println(t 1 )
// Applying foreach method
t 1 .foreach(x => println(x + " times " + x + " = " + x*x))
}
} |
Output:
TreeSet(2, 4, 6, 7, 8, 9) 2 times 2 = 4 4 times 4 = 16 6 times 6 = 36 7 times 7 = 49 8 times 8 = 64 9 times 9 = 81
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