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class A {
def foo: Int = 1
}
trait B extends A
abstract class D {
def foo: Int
}
class C extends D with B // error: illegal trait inheritance
trait E extends D with B // error: illegal trait inheritance
object Test {
def main(args: Array[String]): Unit = {
println(new C().foo)
}
}
object Test2 {
class A
class SubA(x: Int) extends A
trait TA extends A
trait TSubA extends SubA(2) // error: trait TSubA may not call constructor of class SubA
class Foo extends TA with TSubA // error: missing argument for parameter x of constructor SubA:
}
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