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rust-lang
The Rust Programming Language
Listing _15-29_ has only 1 `println!("leaf parent = {:?}", leaf.parent.borrow().upgrade());`. Thus `None` option shows in output just once by end — `leaf parent = None` — not “again”. ```console leaf...
I added some new information and clarifications for beginners. The documentation I added were things that I did not realize or know when first reading the book and things that...
Coming from another language, I have struggled with Rust error system for a while. The main issue I have, is when a function can return different error types. I know...
- [x] I have checked the latest `main` branch to see if this has already been fixed - [x] I have searched existing issues and pull requests for duplicates URL...
Hi! I'm working through the Rust Book for the first time and I noticed that Cargo supports `cargo add` now. Maybe worth adding that to the book? ## Progress -...
Closes https://github.com/rust-lang/book/issues/3343 By chapter 12.3 related code has visual like ```rust use std::env; use std::fs; fn main() { let args: Vec = env::args().collect(); let query = &args[1]; let filename =...
The example code converts the input into a whole number. Replace the text "convert the String the program reads as input into a real number type" to "an actual number...
- [x] I have checked the latest `main` branch to see if this has already been fixed - [x] I have searched existing issues and pull requests for duplicates URL...
- [x] I have checked the latest `main` branch to see if this has already been fixed - [x] I have searched existing issues and pull requests for duplicates URL...