Declaring And Using Constants In Rust: A Beginner's Guide
In Rust, constants are immutable values bound to a name, avoiding "magic values" and making code updates easier. Declare with `const` keyword, all caps convention, type annotation, and binding value with `=` operator.
Author's Note: This is an older post I wrote back in the Spring of 2022, have decided to bring this content over to dev.to and refresh it The journey to through the basics of Rust continues. In a previous article, I provided a brief overview of how to get started with Rust by creating a tiny cliche of a program that displays a greeting. This article will focus on a specific language aspect, namely constants. What is a Constant? A constant is a value that can be bound to a name, similar to a variable. By its nature, the value cannot change. What is the Purpose of a Constant?...