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Scala SortedMap keys() method with example
  • Last Updated : 03 Nov, 2019

The keys() method is utilized to give an iterator over all the keys of the SortedMap.

Method Definition: def keys: Iterable[A]

Return Type: It returns an iterator over all the keys of the SortedMap.

Example #1:




// Scala program of keys()
// method
import scala.collection.immutable.SortedMap
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating SortedMap
        val m1 = SortedMap("geeks" -> 5, "for" -> 3, "cs" -> 2)
          
          
        // Applying keys method 
        val result = m1.keys
          
        // Displays output
        println(result)
    }
}
Output:



Set(cs, for, geeks)

Example #2:




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

So, the identical keys are taken only once.

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