An introduction to the Rust ecosystem

Slides from my talk at Rust Warsaw #1.

Transcript

1. Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18
2. http://mickmcdee.deviantart.com/art/Fungi-ecosystem-272294806
3. Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18 The language itself
4. „a systems programming language that runs blazingly fast, prevents nearly all segfaults, and guarantees thread safety.”
5. <graydon> I think I named it after fungi. rusts are amazing creatures. https://www.flickr.com/photos/basf/4837713556/
6. memory safety no data races zero-cost abstractions
7. rustup.sh distro package Windows installer
8. https://www.flickr.com/photos/tschaut/857853764/ https://www.flickr.com/photos/101307973@N04/13254114423/ https://www.flickr.com/photos/101307973@N04/17099131997/
9. https://github.com/brson/multirust manages multiple toolchains local overrides
10. Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18 The package manager
11. fetches dependencies compiles code runs build scripts
12. [package] name = "rustwarsaw" version = "0.0.1" authors = ["Zbigniew Siciarz <zbigniew@siciarz.net>"] [dependencies] rustc-serialize = "~0.3.14" docopt = "~0.6.64" iron = "~0.1.17" mount = "~0.0.7" staticfile = "~0.0.2"
13. unit tests integration tests doctests examples
14. #[cfg(test)] mod test { #[test] fn test_solution() { assert_eq!(2 * 21, 42); } }
15. uploads package to crates.io
16. /// Gets the CPU clock frequency in MHz. /// /// The underlying implementation uses several methods to discover CPU /// speed, including direct measurement. If all these methods fail, function /// returns `None`. pub fn clock_frequency() -> Option<i32> { // ... }
17. rustfmt? future! guidelines http://doc.rust-lang.org/1.0.0/style/
18. Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18 when stdlib doesn’t cut it
19. #[derive(RustcDecodable, RustcEncodable)] struct Movie { title: String, pub_year: usize, } let mut reader = Reader::from_file(path).unwrap(); for row in reader.decode() { let movie: Movie = row.unwrap(); println!("{}", movie.title); }
20. fn get_content(url: &str) -> hyper::Result<String> { let mut client = Client::new(); let mut response = try!(client.get(url).send()); let mut buf = String::new(); try!(response.read_to_string(&mut buf)); Ok(buf) } println!("{:?}", get_content("http://www.google.com"));
21. use hyper::server::{Request, Response}; fn hello(_: Request, res: Response) { res.send(b"Hello Rust Warsaw!").unwrap(); } fn main () { hyper::Server::http(hello).listen("127.0.0.1:3000"); }
22. let mut sha = Sha256::new(); sha.input_str("Hello world!"); println!("{}", sha.result_str()); let mut cipher = aes::ctr(KeySize::KeySize128, &key, &nonce); let secret = "I like Nickelback"; let mut out: Vec<u8> = repeat(0u8).take(secret.len()).collect(); cipher.process(secret.as_bytes(), &mut out[..]); println!("Ciphertext: {}", out.to_base64(STANDARD));
23. 3D game engine http://www.piston.rs/ https://github.com/PistonDevelopers /piston-examples
24. rusqlite postgres redis mysql
25. anymap capnproto chrono conrod docopt fuse gl glutin html5ever image iron itertools nalgebra openssl quickcheck rand regex rustache rustless sodiumoxide ssh2 time winapi zmq ...
26. Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18 FFI to&from other languages
27. #[link(name = "cpuid")] extern { pub fn cpuid_present() -> c_int; pub fn cpuid_lib_version() -> *const c_char; pub fn cpuid_error() -> *const c_char; // ... } pub fn is_present() -> bool { unsafe { ffi::cpuid_present() == 1 } }
28. extern crate libc; use std::ffi::CStr; use libc::c_char; #[no_mangle] pub extern "C" fn count_substrings(value: *const c_char, substr: *const c_char) -> i32 { let c_value = unsafe { CStr::from_ptr(value).to_bytes() }; let c_substr = unsafe { CStr::from_ptr(substr).to_bytes() }; // ... }
29. #include <stdint.h> #include <stdio.h> int32_t count_substrings(const char* value, const char* substr); int main() { printf("%d\n", count_substrings("banana", "na")); return 0; }
30. import ctypes library_name = "../target/debug/libstringtools.so" stringtools = ctypes.CDLL(library_name) print(stringtools.count_substrings(b"banana", b"na")) var ffi = require('ffi'); var library_name = '../target/debug/libstringtools.so'; var stringtools = ffi.Library(library_name, { 'count_substrings': ['int', ['string', 'string']] }); console.log(stringtools.count_substrings("banana", "na"));
31. https://github.com/zsiciarz/rust-ffi-stringtools https://github.com/alexcrichton/rust-ffi-examples https://doc.rust-lang.org/book/ffi.html
32. Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18 Show me the real deal
38. standard library docs rustbyexample.com users.rust-lang.org /r/rust #rustlang zsiciarz.github.io/24daysofrust
39. Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18
40. Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18