How to Implement Traits for Polymorphism in Rust 1.86, TypeScript 5.7, and Go 1.24 Polymorphism is a core object-oriented principle that allows objects of different types to be treated as objects of a common type. Traits (or interfaces, protocols) are the primary mechanism to achieve this in many modern languages. This guide walks through implementing trait-based polymorphism in Rust 1.86, TypeScript 5.7, and Go 1.24, with practical code examples and key differences between each approach. Prerequisites Basic knowledge of Rust, TypeScript, and Go syntax Rust 1.86 installed (verify with rustc --version ) TypeScript 5.7 installed (verify with tsc --version ) Go 1.24 installed (verify with go version ) What Are Traits? Traits define a set of method signatures that a type must implement to conform to the trait. They enable polymorphism by letting you write code that works with any type that implements the trait, without needing to know the type's concrete details.…