increment_in_place.rs

fn increment_mut(p: &mut Vec<int>) {                                                                                                                                                                                
    for num in p.mut_iter() {                                                                                                                                                                                       
       *num = *num + 1                                                                                                                                                                                              
    }                                                                                                                                                                                                               
}                                                                                                                                                                                                                   
                                                                                                                                                                                                                    
fn main() {                                                                                                                                                                                                         
   let mut p = vec![1i, 2, 3];                                                                                                                                                                                      
   increment_mut(&mut p);                                                                                                                                                                                           
   for &x in p.iter() {                                                                                                                                                                                             
      print!("{:d} ", x);                                                                                                                                                                                           
   }                                                                                                                                                                                                                
}