Scala – Pass function as a parameter
In Scala, we can pass a function as a parameter to another function or say method. For that we have to follow the below guidelines.
- Define your method , including the function signature that it will accepts as a parameter.
- Define the function with the exact signature that will be passed a method parameter.
- Pass the function as a parameter to the methosd.
Let’s understand this with an example.A method named EmpDetails has been defined which accepts another function yearlySalary as its parameter which has same function signature.
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object FuncAsParam { def main(args: Array[String]): Unit = { EmpDetails("Tom",30000,yearlySalary) } def EmpDetails(name:String,salary:Int, f:Int=>Int)= { print(name +"'s salary per anum in INR - "+ f(salary) ) } def yearlySalary(sal:Int): Int ={ sal * 12 } } |
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Output: Tom's salary per anum in INR - 360000 |
