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並前往http://doc.rust-jp.rs/the-rust-programming-language-ja/1.6/core/marker/trait.Copy.html

core::marker::Copy - Rust

we can just derive a `Copy` implementation #[derive(Debug, Copy, Clone)] struct Foo; let x = Foo; let y = x; // `y` is a copy of `x` println!("{:?} ...

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