What is the meaning of <% in Scala?
The context I see it in is an abstract class declaration that I am trying to extend. This is the important part of the class:
abstract class Index[Res <% Result[Res]] {
def results (term: String) : List[Res] ...
This is the header of the Result trait:
trait Result[T] extends Any {
I was able to successfully create a class that extends Result. For simplification here, I will use this header:
class Sample extends Result[Int] {
I want results in my class (extending Index) to return type List[Sample]. I tried a few different definitions, but I always get a similar error:
No implicit view available from [type] to Result[type]
where type is whatever type I used to extend Index, i.e. :
class SampleIndex extends Index[Sample]
I think my problem comes from my misunderstanding of the <% in the definition of the abstract class. Any idea how to fix this?
