Scala: default value for function parameter in higher order function

Question

I have higher order function:

def calculateFusionRiskContract(postCalc: DataFrame => DataFrame)

How i can set default value for postCalc parameter that just return parameter of postCalc? without any calculation?

def calculateFusionRiskContract(postCalc: DataFrame => DataFrame = ???)

`def calculateFusionRiskContract(postCalc: DataFrame => DataFrame = df => df)` - it wouldn't hurt to learn the language, lambdas are a very basic concept. — Luis Miguel Mejía Suárez, Oct 21 '22 at 12:35

score 6 · Answer 1 · answered Oct 21 '22 at 12:37

6

The function that "just returns the parameter" is identity

def calculateFusionRiskContract(postCalc: DataFrame => DataFrame = identity) = ???

answered Oct 21 '22 at 12:37

Dmytro Mitin

1 Answers1