mirror of https://github.com/rust-lang/book
28 lines
559 B
Rust
28 lines
559 B
Rust
use std::fmt;
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trait OutlinePrint: fmt::Display {
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fn outline_print(&self) {
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let output = self.to_string();
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let len = output.len();
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println!("{}", "*".repeat(len + 4));
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println!("*{}*", " ".repeat(len + 2));
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println!("* {output} *");
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println!("*{}*", " ".repeat(len + 2));
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println!("{}", "*".repeat(len + 4));
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}
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}
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// ANCHOR: here
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struct Point {
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x: i32,
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y: i32,
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}
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impl OutlinePrint for Point {}
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// ANCHOR_END: here
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fn main() {
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let p = Point { x: 1, y: 3 };
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p.outline_print();
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}
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