InnerProductSpace working example

[MohammadForouhesh]

We plan to use this wonderful library in one of our service, yet I couldn't find any proper tutorial on how to run a simple example. our use case is as follows:
Lets say we have a case class Person, how can I calculate the dot product between two Person?

case class Person(age: Int, height: Int) 
val p = Person(20, 180)
val c = Person(15, 165)
p.dot(c)

If you provide me with some sample code, it would be highly appreciated.

[armanbilge]

Are you familiar with implicits/givens/typeclasses? Are you using Scala 2 or Scala 3? You want to define an instance of InnerProductSpace and place inside the companion object Person.

Here's an example for Scala 3.

object Person {
  given InnerProductSpace[Person, Int] with {
    def dot(x: Person, y: Person): Int = ...
  }
}

Then to get the dot syntax you would do something like import spire.syntax.all._

[MohammadForouhesh]

thanks for your timely reply and your sample code. also I wonder whether there is any benchmark on the performance of this library against other possible solutions?