Rust Quick Start Guide

Data structures

Creating a data structure is one of the ways to add a new data type to Rust. A data structure is a group of variables that have been attached to each other, resulting in a single new data type that means all of these, together.

A new structure is defined using the struct keyword:

pub struct Constrained {    pub min: i32,    pub max: i32,    current: i32,}

Notice the commas after each contained variable is defined. It can be tempting to use semicolons there, but that would cause a compiler error. The final comma is optional, but recommended, because it means that the lines can be rearranged without having to pay attention to where a comma might be missing, among other reasons.

Here, we've defined a structure called Constrained, which ...