Question

How to remove multiple elements from a set in Scala

Answer 1

val set = Set(1, 2, 3, 4)
val updatedSet = set -- Set(2, 3)

println(updatedSet) 
 
 
 
/*
run:
  
Set(1, 4)
  
*/

 

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Answer 2

import scala.collection.mutable.Set
 
val mutableSet = Set(1, 2, 3, 4)
mutableSet --= Set(1, 3)
 
println(mutableSet) 
 
 
 
/*
run:
  
HashSet(2, 4)
  
*/

 

 

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