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Scala Map count() method with example

  • Last Updated : 13 Aug, 2019

The count() method is utilized to count pair of keys in the Map.

Method Definition: def count(p: ((A, B)) => Boolean): Int

Return Type: It returns the number of keys present in the map that satisfies the given predicate.

Example #1:




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



3

Example #2:




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

So, the identical keys are counted only once.




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