Danes-Vault/3-99 Research/Rust/Chapter 2 - Guessing Game.md

What we did:

Created a guessing game! This file takes in a number from the user, generates a random number, and compares the two to say whether the guess is correct, lower, or higher. It introduces us to key concepts in Rust such as module importing, the idea of mutability, how to define variables, and other interesting type things.

Breaking Down some things

Types, and variants

When creating the variable guess we created it as

let mut guess = String::new();

where we call String::new(). String is a type, that has a function new integrated into that type.

Then, we read in the data. Some interesting things happen here:

1. We use &mut guess where & signifies a reference to an object
2. We have an .expect() a. .read_line returns a string, but it also returns a result b. This result is an enumeration type, with each possible result being a variant.

Wacky stuff.