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// SPDX-FileCopyrightText: 2020 Robin Krahl <robin.krahl@ireas.org>
// SPDX-License-Identifier: CC0-1.0
#![cfg(all(feature = "derive", feature = "std"))]
use merge::Merge;
#[derive(Merge)]
struct User {
#[merge(skip)]
pub name: &'static str,
pub location: Option<&'static str>,
#[merge(strategy = merge::vec::append)]
pub groups: Vec<&'static str>,
}
fn main() {
let defaults = User {
name: "",
location: Some("Internet"),
groups: vec!["rust"],
};
let mut ferris = User {
name: "Ferris",
location: None,
groups: vec!["mascot"],
};
ferris.merge(defaults);
assert_eq!("Ferris", ferris.name);
assert_eq!(Some("Internet"), ferris.location);
assert_eq!(vec!["mascot", "rust"], ferris.groups);
}
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