Source code for fullstackrust course.

#Setting up VSCode crates - see versions rust-analyzer - Error Lens - inlays errors

#Rust intro course Why Rust? Consistently the most loved programming language as per Stackoverflow for the past several yrs Fast, Secure, General Programming language: systems programming, databases, OS programming, iot, web api, frontend, tooling, Compiled very fast Strongly type - secure, less bugs. Bugs discovered at compile time. Great ecosystem Crates.io just like NPM for JS Cargo package system.

• variables: immutable, mutable

• scalar data types: bool, integers, floats (nums with decimal) - all mathematic operations

• Compound data types: let array = [1,2,3]; array[0]; let tuple = (1, "man", true); tuple.0; an empty tuple is called a unit

• functions

• struct struct Car { name: String, age: u32 }

• traits are behavior descriptions

let car1 = Car { name: String::from("Audi a3"), age: 6 }; car1.age; tuple struct: struct LatLong (u32, u32); let location = LatLong(84,30); println!("Location is {:?}, {:?}", location.0, location.1);

• Enum: list variants of data The Option enum is built in with standard lib enum Option { Some, None }

• Control Flow: if, else, match let age = 18; if age > 18 { println!("You can drink"); } else if age = 18 { println!("You are barely 18"); } else { println!("You cannot drink"); }

• Control Flow: match - is similar to switch in other languages let age = 18;

match age { 18 => println!("Hey you are 18"), 21 => println!("Hey you are 21 now and you can drink"), _ => println!("We dont know your age") }

• Loops loop { println!("printing for ever); break;}

let mut x = 10; while x != 0 { println!("Number is {}", x); x -= 1; println!("I am done"); }

let scores = [2,4,6,8,10]; for score in scores.iter() { println!("The score is {}", score); }

for num in 4..7 { println!("Number x 2 is {}", num*2 ); }

• Error handling using the panic macro panic!("There was an error");

use the Option enum use Result enum enum Result<T, E> { OK(T), Err(E) }

The ? Operator

• Ownership Each value has one Owner: let age =20; age owns 20. There can only be one owner at a time If owner goes out of scope, value is dropped

• Borrowing

#Tools needed

1. Your wasm target: rustup target add wasm32-unknown-unknown

2. Trunk: WASM web application bundler for Rust cargo install trunk

3. cargo-watch: cargo install cargo-watch cargo watch -x run

mkdir axum-yew-app cd axum-yew-app git init cargo new --bin server2 --vcs none cargo new --bin frontend --vcs none

=================================== ####Connecting frontend and server #### create and add to Cargo.toml [workspace]

members = [ "server", "frontend" ]

#create and add to .gitignore target/ dist/ .env

create frontend/Trunk.toml and add contents [build] target = "index.html" dist = "../dist"

now you can run: trunk serve

now go to server/main.rs

axum::response::IntoResponse axum::http::StatusCode, use std::io;

//serving frontend static files let serve_dir = ServeDir::new("../frontend/dist").not_found_service(ServeFile::new("../dist/frontend/index.html")); let serve_dir = get_service(serve_dir).handle_error(handle_error);

add to router

    .nest_service("/", serve_dir.clone())
    .fallback_service(serve_dir.clone());

add handle error fn

async fn handle_error(_err: io::Error) -> impl IntoResponse { (StatusCode::INTERNAL_SERVER_ERROR, "Something went wrong...") }

change current / to /home

cd into backend: cargo watch -x run

cd into server and Cargo add

got to project dir and run

cargo run --bin server #cd into server and run cargo watch -x run

in frontend dir

cargo install trunk

rustup target add wasm32-unknown-unknown cargo add yew --features yew/csr