Simon Pastuch Simon Pastuch - 3 months ago 12
Scala Question

Internal case class in scala

I have the following case class

case class MyClass (LeftHandSide: (Set[String], String), RightHandSide: Double)


so, I can do the following

MyClass((Set("yu", "ye"), "bee"), 0.03).filter( x=> x.RightHandSide>4)


and I would like to able to call parts of the LeftHandSide by name too, e.g:

case class MyClass (LeftHandSide: (Part1: Set[String], Part2: String), RightHandSide: Double)


And then:

MyClass((Set("yu", "ye"), "bee"), 0.03).filter(x => x.LeftHandSide.Part2 != "bee")

Answer

Create an additional case class called LeftHandSide:

case class LeftHandSide(partOne: Set[String], partTwo: String)

And use that in MyClass:

case class MyClass(leftHandSide: LeftHandSide, rightHandSide: Double)

And then:

val myClass = MyClass(LeftHandSide(Set("yu", "ye"), "bee"), 0.03)
myClass.leftHandSide.partTwo != "bee"