Explain the concept of zero-cost abstractions in Rust and how it contributes to performance.

Zero-cost abstractions are a fundamental concept in Rust that aims to provide high-level programming constructs without incurring any runtime overhead. It means that using abstractions in Rust should not result in any performance penalty compared to writing equivalent low-level code manually. Let's dive into the concept of zero-cost abstractions in Rust and explore how it contributes to performance: 1. Abstractions in Rust: Abstractions in Rust allow developers to write code in a more expressive and concise manner, hiding implementation details and providing high-level constructs. This includes features like higher-order functions, pattern matching, iterators, and generics. Abstractions make code easier to understand, maintain, and reason about, leading to improved productivity and code quality. 2. Cost of Abstractions: In some programming languages, using abstractions may come with a performance cost. For example, using dynamic dispatch in object-oriented languages often involves r....