Generic Function

Write functions that work with multiple types using generics.

Difficulty

Intermediate

Code

fn largest<T: PartialOrd>(list: &[T]) -> &T {
    let mut largest = &list[0];
    for item in &list[1..] {
        if item > largest {
            largest = item;
        }
    }
    largest
}

fn main() {
    let numbers = vec![34, 50, 25, 100, 65];
    println!("largest: {}", largest(&numbers));

    let chars = vec!['y', 'm', 'a', 'q'];
    println!("largest: {}", largest(&chars));
}

Explanation

Generics work with multiple types. Trait bounds constrain operations.

Key Concepts

• Read the code carefully and understand the data flow
• Try modifying the example to see how it changes behavior
• Run this code in the Rust Playground

Related Topics

Browse more examples in the generics category to build a complete understanding of this topic.