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fn main() {
println!("Hello, World!");
}

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#+startup: indent
#+link: ch01 https://rust-book.cs.brown.edu/ch01-00-getting-started.html
* Getting Started
** Chapter 01: Installation
* Chapter 01: Installation
Recommendation is to use ~rustup~ using the command:
#+name: install rustup
#+begin_src shell
@ -22,7 +19,7 @@ To confirm it's installed:
#+RESULTS: confirm rustup installed
: rustup 1.26.0 (5af9b9484 2023-04-05)
*** Update
** Update
To update ~rustup~ and please do regularly
#+name: update rustup
#+begin_src shell :results output
@ -33,44 +30,10 @@ To update ~rustup~ and please do regularly
:
: stable-x86_64-unknown-linux-gnu unchanged - rustc 1.76.0 (07dca489a 2024-02-04)
:
*** Documentation
** Documentation
~rustup~ comes with documentation, just type
#+begin_src shell
rustup doc
#+end_src
and the browser will open a page with links toward lots of docs.
** Chapter 02: Hello, World!
Basically done in 3 steps:
- Edit the rs file
- Compile using ~rustc~
- Call the executable
Work folder is =Projects/01_HelloWorld=, where we create the file =main.rs=
#+name: hello_world main.rs
#+begin_src rust
fn main() {
println!("Hello, World!");
}
#+end_src
To execute this program:
#+name: 0102 call main
#+begin_src shell :results output
cd Projects/01_HelloWorld/
rustc main.rs
./main
#+end_src
#+RESULTS: 0102 call main
: Hello, World!
The program wordes, I'm now done.
*** Note
All rust program starts by calling the function ~main~.
Functions with ~!~ appended to their name, like ~println!~, are macros.