Rust 泛型与特性

概述

泛型和特性是 Rust 强大的抽象工具。

🔧 泛型函数

rust

fn largest<T: PartialOrd + Copy>(list: &[T]) -> T {
    let mut largest = list[0];
    for &item in list {
        if item > largest {
            largest = item;
        }
    }
    largest
}

🎯 特性定义

rust

trait Summary {
    fn summarize(&self) -> String;
}

struct NewsArticle {
    pub headline: String,
    pub content: String,
}

impl Summary for NewsArticle {
    fn summarize(&self) -> String {
        format!("{}: {}", self.headline, self.content)
    }
}

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