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