Scala Mutable SortedMap contains() method with example

Scala SortedMap contains() method with example

Last Updated : 02 Nov, 2019

The contains() method of Scala is equivalent to the isDefinedAt method of Scala but the only difference is that isDefinedAt is observed on all the PartialFunction classes while contains is clearly defined to the SortedMap interface of Scala. It checks whether the stated SortedMap contains a binding for a key or not.

Method Definition: def contains(key: K): Boolean
Where, k is the key.

Return Type: It returns true if there is a binding for the key in the SortedMap stated else returns false.

Example #1:

// Scala program of contains() 
// method 
import scala.collection.immutable.SortedMap 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a SortedMap 
        val m1 = SortedMap(3 -> "geeks", 4 -> "for", 4 -> "for") 
          
        // Applying contains method 
        val result = m1.contains(3) 
          
        // Displays output 
        println(result) 
  
    } 
}                                          
                                        

Output:

true

Here, contains method has a key identical to the key present in the SortedMap stated above so, it returns true.
Example #2:

// Scala program of contains() 
// method 
import scala.collection.immutable.SortedMap 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a SortedMap 
        val m1 = SortedMap(3 -> "geeks", 4 -> "for", 4 -> "for") 
          
        // Applying contains method 
        val result = m1.contains(5) 
          
        // Displays output 
        println(result) 
  
    } 
}                                          
    

Output:

false

Here, contains method has a key which is not identical to the key present in the SortedMap stated above so, it returns false.

Scala Mutable SortedMap contains() method with example

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