jonra1993/learning_rust

learning-rust

Installing rustup on Linux or macOS

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
source ~/.cargo/env

Check rust version

rustc --version

Update Rust version

rustc update

Setup project manager

Cargo is Rust’s build system and package manager.

cargo install cargo-edit

cargo-edit package helps add packages in cargo add <any_package> format

Create new cargo project

cargo new actix_demo

cargo add <any_package>

Building and Running a Cargo Project

cargo build # build your project and creates a executable on development
cargo run   # build your project, creates a executable on development and run code
cargo check # Quickly checks your code to make sure it compiles but doesn’t produce an executable
cargo build --release # Generates production artifacts

Run binary targets

cargo run --bin hello

cargo add actix-web

Data types

Scalar types

A scalar type represents a single value

Integer types

Default is i32

Length	Signed	Unsigned
8-bit	i8	u8
16-bit	i16	u16
32-bit	i32	u32
64-bit	i64	u64
128-bit	i128	u128
arch	isize	usize

Floating-Point Types

Default is f64

Length	type
32-bit	f32
64-bit	f64

The Boolean Type

    let t = true;
    let f: bool = false; // with explicit type annotation

The Character Type

    let c = 'z';
    let z: char = 'ℤ'; // with explicit type annotation
    let heart_eyed_cat = '😻';