Pattern matching an Argument List

scala> //PS:117

scala> //psn > a40 > a40

scala> //Argument List is pattern matched using 

scala> //<variable name> @ _*

scala> def CheckSequence(myData: Seq[Char]) = myData match {
     |   case Seq('a', 'b', otherVals @ _*) => true
     |   case _ => false
     | }
CheckSequence: (myData: Seq[Char])Boolean

scala> 

scala> val data1 = Seq('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h')
data1: Seq[Char] = List(a, b, c, d, e, f, g, h)

scala> println(s"Result -> ${CheckSequence(data1)}")
Result -> true

scala> 

scala> val data1 = Seq('m', 'n', 'o', 'p', 'q')
data1: Seq[Char] = List(m, n, o, p, q)

scala> println(s"Result -> ${CheckSequence(data1)}")
Result -> false

Multiple Argument List : Example

A method will multiple argument list are also Variadic methods

scala> // #PS:37

scala> // When a function is defined with Multiple argument list(getMark()

scala> // in this case), 

scala> // (1) : last argument can be passed using curly bracket,

scala> // which gives a nice looking block syntax instead of using Round 

scala> // bracket

scala> //(2) : Implicit arguments can be passed for last argument list

scala> 

scala> // getMark() is defined to take 3 arguments

scala> // Arg 1 : String

scala> // Arg 2 : Int

scala> // Arg 3 : Function

scala> def getMark(subject: String, mark:Int)(printFn: (String, Int) => String) = {
     |   val finalMark = if (subject == "math") {
     |                     mark + 10
     |                   }else {
     |                     mark  
     |                   }
     |   printFn(subject, finalMark)                  
     | }
getMark: (subject: String, mark: Int)(printFn: (String, Int) => String)String

scala> 

scala> // Calling getMark() : Example 1 ( Last argument passed using curly bracket)

scala> getMark("math", 80){
     |                       (subject:String, mark:Int) => {
     |                         s"$subject mark is -> $mark"
     |                       }
     |                     }
res33: String = math mark is -> 90

scala> 

scala> // Calling getMark() : Example 2

scala> getMark("science", 70){ 
     |                         (subject:String, mark:Int) => {
     |                           if(mark <= 80) {
     |                             s"$subject mark is low -> $mark"  
     |                           }else {
     |                             s"$subject mark is good -> $mark"
     |                           }
     |                         }
     |                       }
res34: String = science mark is low -> 70