52-weeks-rust

Trying out Rust

How to Install

• Install Steps
• Pro-tip, run rustup update to update your installation.
• Check version do this: rustc --version

How the heck do I compile?

• rustc myfunc.rs in this case, the <yourfile>.rs is what is compiled.
• Next you run it: ./myfunc.rs

How do I use Cargo?

• Do you have it? cargo --version?
• cargo new hello_cargo && cd hello_cargo

Ep 15: finish the webcli tool (almost done)

• make the function in Rust accept the options from the parser.

Ep 14: Build a rust cli that calls out to the web somehow

• Using this lib: https://crates.io/crates/wikipedia

Ep 13: Use popular rust crate + cli

Goal: Build a cli clap tool that generates random numbers in a range

• clap docs

To run it: cargo run -- -x 1 -y 10

To run help:

cargo run -- --help The output should be:

Generates a Random Number between an X and Y Range

Usage: randocli [OPTIONS]

Options:
  -x, --x <X>    The lower bound of the range [default: 0]
  -y, --y <Y>    The upper bound of the range [default: 100]
  -h, --help     Print help information
  -V, --version  Print version information

Episode 12: Finished Setup and Using Vectors also try rust-cli book examples

• Added setup script for configuring codespaces: https://blog.rust-lang.org/2022/11/03/Rust-1.65.0.html
• Shoutout the rust-cli book cargo new grrs

To run this tool do the following and you will see this output: cargo run -- fancy foo.txt

    Finished dev [unoptimized + debuginfo] target(s) in 0.02s
     Running `target/debug/grrs fancy foo.txt`
Searching for Pattern: fancy
Found Pattern: fancy
fancy

Episode 11: Fix Codespaces Rust

• Environment seems totally fubar, figure out how to make one that isn't.
• Also figure out how to not checkin debug files

Episode 10: Collections

• collections and vectors

Note: Run into an weird issue and tried

cargo install cargo --force

Episode 9: Working with modules and packages

• Cover modules and packages

• Create is smallest container (contain main)

• Library crates don’t have a main function, and they don’t compile to an executable.

• A package is a bundle of one or more crates that provides a set of functionality

• Cargo.toml file that describes how to build those crates

cargo new backyard

TBD: Still not working...dive into this more next time: https://doc.rust-lang.org/book/ch07-02-defining-modules-to-control-scope-and-privacy.html

Episode 8: Figuring how cli tools work with Rust

• The target binary is in target/debug. But, should I run this for day to day or should I use Cargo?
• change the way you pass things in: https://stackoverflow.com/questions/73364389/i-cant-seem-to-get-my-clap-parser-to-take-in-a-vector-of-string-and-use-flags

The way to run a cli via cargo is with these fancy -- and then don't say name of tool

cargo run -- --name "bob"

Episode 7

Episode 6

Fixed random choices and started ownership

Episode 5

We fixed it!

Fix this CODE!!!

// Looping fun
// Thank you:  https://rust-lang-nursery.github.io/rust-cookbook/algorithms/randomness.html
use rand::Rng;

// Broken code fix:  learn to convert to iterator
fn main() {
    //let a = [10, 20, 30, 40, 50];
    let mut rng = rand::thread_rng();
    for element in rng {
        println!("the value is: {element}");
    }
}

Episode 3

Make a function:

• cargo new hello_func && cd hello_func (put some code in src/main like this)

//Function 1
fn main() {
    println!("Hello, world!");

    another_function();
}

//Function 2
fn another_function() {
    println!("Another function.");
}

• cargo build

Episode 2

Trying to learn Rust

Quick example:

use ferris_says::say; // from the previous step
use std::io::{stdout, BufWriter};

fn main() {
    let stdout = stdout();
    let message = String::from("Hello fellow Rustaceans!");
    let width = message.chars().count();

    let mut writer = BufWriter::new(stdout.lock());
    say(message.as_bytes(), width, &mut writer).unwrap();
}

• learn by example guide

References

• Codespaces Examples Rust
• updating cargo and rust