RustEn8Etapes/etape8/ex8_3.rs

/* Copyright (C) 2011-2023  Patrick H. E. Foubet - E2L Ivry
Ecole du Logiciel Libre : https://e2li.org/

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or any
later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>
*******************************************************************/

pub trait Show { // définit un trait
  fn show(&self) ; // définition d'une méthode de trait
}
impl<T> Show for T // implémente le trait avec un générique
where T : ToString{ // spécifie le type String
  fn show (&self) { // implémente la méthode de trait de caractère
     print ! ("{}",self . to_string()) ;
  }
}
fn main(){
String :: from("Tout fonctionne !\n") . show() ; // appel de la méthode
}