struct Container {
   content: Vec<f64>
 }

 impl Container {
   fn print_content(&self) {
     println!("Der Container speichert {} Floats", self.content.len());
   }
 }

 fn main() {
   let c = Container {
      content: vec!(1.0, 2.0, 3.0)
   };

   c.print_content();
 }