gistfile1.txt

// is there a way to bound the 'TRAIT_OBJECT' type param to tell it *this is a trait object*?
// context..
// looking for ways of streamlining code dealing with boxed-trait-objects

impl Editor{
    pub  fn set_tool<'e,E:MTool<EdScene>+Clone>(&'e mut self,data:E) where E:'static{
        self.mtool = new_object(data);
        //Box::new(data) as Box<MTool<EdScene>> // <<<<<<<  WAS THIS...
    }
}

// Want: helper function to
// box a struct and bind with a vtable, infering types from context.
//
fn new_object<S:Clone,TRAIT_OBJECT>(data:S)->TRAIT_OBJECT{
    Box::new(data.clone()) as TRAIT_OBJECT   // <<<< ERROR NON SCALAR CAST
}

// I've tried a macro, but macros confuse IntellijIDE. 
// relying on macros= harder for tools to navigate.
//