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Remove key value from Map in Scala

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  • Last Updated : 13 Aug, 2019

The deletion of Scala map keys can be obtained by utilizing operator. This operator is utilized to delete the set of keys of the map.
Syntax:

def -(elem1: A, elem2: A, elems: A*): Map[A, B]

It returns a new map containing all the elements of the given Map except the set of keys which are deleted using the above operator.
Example #1:




// Scala program of deleting 
// keys
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a map
        val m1 = Map("geeks" -> 5, "for" -> 3
          
        // Applying - operator
        val result = m1.-("for")
          
        // Displays output
        println(result)
      
    }
}

Output:

Map(geeks -> 5)

In above example here for key is deleted.
Example #2:




// Scala program of deleting 
// keys
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a map
        val m1 = Map("geeks" -> 5, "for" -> 3, "cs" -> 2
          
        // Applying - operator
        val result = m1.-("for", "geeks")
          
        // Displays output
        println(result)
      
    }
}

Output:

Map(cs -> 2)


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