vendor/merge/examples/user.rs

   1 // SPDX-FileCopyrightText: 2020 Robin Krahl <robin.krahl@ireas.org>
   2 // SPDX-License-Identifier: CC0-1.0
   3
   4 use merge::Merge;
   5
   6 #[derive(Merge)]
   7 struct User {
   8     #[merge(skip)]
   9     pub name: &'static str,
  10     pub location: Option<&'static str>,
  11     #[merge(strategy = merge::vec::append)]
  12     pub groups: Vec<&'static str>,
  13 }
  14
  15 fn main() {
  16     let defaults = User {
  17         name: "",
  18         location: Some("Internet"),
  19         groups: vec!["rust"],
  20     };
  21     let mut ferris = User {
  22         name: "Ferris",
  23         location: None,
  24         groups: vec!["mascot"],
  25     };
  26     ferris.merge(defaults);
  27
  28     assert_eq!("Ferris", ferris.name);
  29     assert_eq!(Some("Internet"), ferris.location);
  30     assert_eq!(vec!["mascot", "rust"], ferris.groups);
  31 }