Rust

Learning Resources

• The Rust Programming Language (THE Rust Reference/Learning Book) rustlang-book: https://doc.rust-lang.org/stable/book/ "The Rust Programming Language (THE Rust Reference/Learning Book)"
• Writing a NES Emulator in Rust (from bugzmanov.github.io/nes_ebook/)
  • Write a NES emulator using Rust!
  • Fantastic intermediate rust overview with a focus on systems programming
• Considering Rust (from YouTube by Jon Gjengset)
  • Great talk by Jon Gjengset
  • Gets you the basic ideas of Rust's capabilities
• rustlings: Small exercizes to get started reading & writing rust code (from GitHub by rust-lang)
  • Great byte sized exercizes to learn rust
  • Do these once a week or something

Collections

Hello World!

Iteration

The iter() function generates an iterator trait to iterate a collection of values by reference. This includes arrays, vectors, slices, etc. The function will return an iterator of type T, where T is the reference type of the elements of the collection.

Iterators have a wide array, pun intended, of functions to help performing actions on all or specific collection items. There's the next(), position(), Map, Filter, but most importantly it can function inside loop structures to define the loop.

Position

The Iterator trait comes with it the position() function that, with the help of a predicate expression passed into it, find the index of an item in a collection. Using the function signature, Iterator.position(predicate: P) -> Option<usize>, you simply pass a predicate expression into it and get the index or None in return.

names = ["Bob", "Steve", "Karen", "Lindsey"];
index = names.iter().position(|&n: String| n == "Karen").unrwap();
println!("{} has index of {}", names[index], index)

The above code snippet sets up a vector of name strings. An index is set from calling position with predicate n == "Karen" from lambda function of arg |&n: String|. Then the index is found, since it's found and unwraped it can access the name Karen.

Optionals

References

Note References

Web References

• The Rust Programming Language (THE Rust Reference/Learning Book)
• Writing a NES Emulator in Rust (from bugzmanov.github.io/nes_ebook/)
• Considering Rust (from YouTube by Jon Gjengset)
• rustlings: Small exercizes to get started reading & writing rust code (from GitHub by rust-lang)
• Rust Documentation: Module std::collections