override on trait

Using mixins like

new OneTrait with TwoTrait {
  ...
}

?


Br's,
Marius

On Sun, Jan 4, 2009 at 2:43 AM, Oliver Lambert <olambo@gmail.com> wrote:

Given the following code, is there anyway I can combine (make DRY) the overrides for OneTrait and TwoTrait


object T1 {

   def whatever = "whatever"
   def whatever1 = "whatever1"

   trait BaseTrait {
       def a = whatever
       def b = whatever1
   }

   trait OneTrait extends BaseTrait {
       def apply(str: String) = {
           new OneTrait {
               override def a = whatever1 // overrides for OneTrait
               override def b = whatever
           }
       }
   }
   trait TwoTrait extends BaseTrait {
       def apply(str: String) = {
           new TwoTrait {
               override def a = whatever1 // overrides for TwoTrait
               override def b = whatever
           }
       }
   }

   def one = new OneTrait {}
   def two = new TwoTrait {}
}

cheers
Oliver

traits don't accept constructor arguments, lets say I want something a little more complex that retains a pattern in the construction between the traits, ie -
  trait OneTrait extends BaseTrait {      val fred "hello"
       def apply(str: String) = {
           new OneTrait {
               override def a = whatever1+str // overrides for OneTrait
               override def b = whatever+fred
           }
       }
   }

On 04/01/2009, at 7:14 PM, Marius Danciu wrote:

Using mixins like

new OneTrait with TwoTrait {
  ...
}

?


Br's,
Marius

On Sun, Jan 4, 2009 at 2:43 AM, Oliver Lambert <olambo@gmail.com> wrote:

Given the following code, is there anyway I can combine (make DRY) the overrides for OneTrait and TwoTrait


object T1 {

   def whatever = "whatever"
   def whatever1 = "whatever1"

   trait BaseTrait {
       def a = whatever
       def b = whatever1
   }

   trait OneTrait extends BaseTrait {
       def apply(str: String) = {
           new OneTrait {
               override def a = whatever1 // overrides for OneTrait
               override def b = whatever
           }
       }
   }
   trait TwoTrait extends BaseTrait {
       def apply(str: String) = {
           new TwoTrait {
               override def a = whatever1 // overrides for TwoTrait
               override def b = whatever
           }
       }
   }

   def one = new OneTrait {}
   def two = new TwoTrait {}
}

cheers
Oliver