Intro

Extension is .rs

Use cargo to create projects in rust .... it is simpler and much faster.
For a new project :

cargo new Project1

cargo build compiles the code and then sets up the dependencies.

cargo run compiles and runs the code in src/main.rs
cargo check checks for errors.

cd src
rustfmt main.rs

The above formats code ..

It is important to have a main.rs file in the src folder which then should have the main function.

Here is a demo ..

Variables in rust

There are two explicit and implicit variables.

!! Name shadowing ?

For constants, write the name of the constant in uppercase, separated by underscores and also you are supposed to specify the type of the constant.

There are two : Scalar and compound data types.

Simply a true(1) or false(0) value.

Stores a single character, any character and is supposed to be surrounded by single quotations.

// char type

let letter : char = 'a';

They are tuple and array

Symbolized by ().
Are immutable , a sequence

Also a sub topic is accessing elements in a tuple and printing them out, accessed by their index.
Example :

fn main() {
    // Getting element at first(0) index.
    let tup: (i32, bool, char) = (1, true, 's');
    println!("{}", tup.0);
}

Symbolized by [].
They should have the same element inside them.

Prelude - preloaded basic functionality.
A crate is a package or a library in Rust.