Polymorphism

#![allow(unused)]
fn main() {
// Copyright 2025 Google LLC
// SPDX-License-Identifier: Apache-2.0

pub trait Trait {}

pub struct HasGeneric<T>(T);

pub enum Either<A, B> {
    Left(A),
    Right(B),
}

fn takes_generic<T: Trait>(value: &T) {}

fn takes_dyn(value: &dyn Trait) {}
}

This slide should take about 2 minutes.

Rust has plenty of mechanisms for writing and using polymorphic code, but they’re somewhat different from other popular languages!
This chapter will cover the details of Rust’s polymorphism and how it’s similar, or different to, other languages.