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fn main() {
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println!("Hello, World!");
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}
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43
README.org
43
README.org
@ -4,10 +4,7 @@
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#+startup: indent
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#+link: ch01 https://rust-book.cs.brown.edu/ch01-00-getting-started.html
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* Getting Started
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** Chapter 01: Installation
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* Chapter 01: Installation
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Recommendation is to use ~rustup~ using the command:
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#+name: install rustup
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#+begin_src shell
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@ -22,7 +19,7 @@ To confirm it's installed:
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#+RESULTS: confirm rustup installed
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: rustup 1.26.0 (5af9b9484 2023-04-05)
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*** Update
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** Update
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To update ~rustup~ and please do regularly
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#+name: update rustup
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#+begin_src shell :results output
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@ -33,44 +30,10 @@ To update ~rustup~ and please do regularly
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:
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: stable-x86_64-unknown-linux-gnu unchanged - rustc 1.76.0 (07dca489a 2024-02-04)
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:
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*** Documentation
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** Documentation
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~rustup~ comes with documentation, just type
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#+begin_src shell
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rustup doc
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#+end_src
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and the browser will open a page with links toward lots of docs.
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** Chapter 02: Hello, World!
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Basically done in 3 steps:
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- Edit the rs file
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- Compile using ~rustc~
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- Call the executable
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Work folder is =Projects/01_HelloWorld=, where we create the file =main.rs=
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#+name: hello_world main.rs
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#+begin_src rust
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fn main() {
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println!("Hello, World!");
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}
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#+end_src
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To execute this program:
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#+name: 0102 call main
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#+begin_src shell :results output
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cd Projects/01_HelloWorld/
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rustc main.rs
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./main
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#+end_src
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#+RESULTS: 0102 call main
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: Hello, World!
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The program wordes, I'm now done.
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*** Note
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All rust program starts by calling the function ~main~.
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Functions with ~!~ appended to their name, like ~println!~, are macros.
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