Scala Map count() method with example Last Updated : 13 Aug, 2019 Comments Improve Suggest changes Like Article Like Report 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 // 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 // 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. Comment More infoAdvertise with us Next Article Scala Map count() method with example nidhi1352singh Follow Improve Article Tags : Scala Scala Scala-Method Scala-Map Similar Reads Scala Set count() method with example The count() method is utilized to count the number of elements in the set. Method Definition: def count(p: (A) => Boolean): Int Return Type: It returns the number of elements present in the set. Example #1: Scala // Scala program of count() // method // Creating object object GfG { // Main method 1 min read Scala Iterator count() method with example The count() method belongs to the concrete value members of the class Abstract Iterator. It is defined in the class IterableOnceOps. It counts the number of elements in the stated collection which satisfy the given predicate. Method Definition : def count(p: (A) => Boolean): Int Where, p is the p 1 min read Scala ListSet count() method with Example In Scala ListSet, count() method is utilized to count the number of elements of the listSet which satisfy a stated predicate. Method Definition: def count(p: (A) => Boolean): ListSet[A] Return Type: It returns the count of number of elements of the listset which satisfy the given predicate. Examp 1 min read Scala Queue count() method with example The count() method is utilized to count the number of elements in the queue that satisfies a given predicate. Method Definition: def count(p: (A) => Boolean): Int Return Type: It returns the count the number of elements in the queue that satisfies a given predicate. Example #1: Scala // Scala pro 2 min read Scala Stack count() method with example In Scala Stack class, the count() method is utilized to count the number of elements in the stack that satisfies a given predicate. Method Definition: def count(p: (A) => Boolean): Int Return Type: It returns the count the number of elements in the stack that satisfies a given predicate. Example 2 min read Like