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An introduction to the Rust ecosystem
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Zbigniew Siciarz
May 18, 2015
Programming
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1.9k
An introduction to the Rust ecosystem
Slides from my talk at Rust Warsaw #1.
Zbigniew Siciarz
May 18, 2015
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Transcript
Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18
http://mickmcdee.deviantart.com/art/Fungi-ecosystem-272294806
Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18 The language itself
„a systems programming language that runs blazingly fast, prevents nearly
all segfaults, and guarantees thread safety.”
<graydon> I think I named it after fungi. rusts are
amazing creatures. https://www.flickr.com/photos/basf/4837713556/
memory safety no data races zero-cost abstractions
rustup.sh distro package Windows installer
https://www.flickr.com/photos/tschaut/857853764/ https://www.flickr.com/photos/101307973@N04/13254114423/ https://www.flickr.com/photos/101307973@N04/17099131997/
https://github.com/brson/multirust manages multiple toolchains local overrides
Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18 The package manager
fetches dependencies compiles code runs build scripts
[package] name = "rustwarsaw" version = "0.0.1" authors = ["Zbigniew
Siciarz <
[email protected]
>"] [dependencies] rustc-serialize = "~0.3.14" docopt = "~0.6.64" iron = "~0.1.17" mount = "~0.0.7" staticfile = "~0.0.2"
unit tests integration tests doctests examples
#[cfg(test)] mod test { #[test] fn test_solution() { assert_eq!(2 *
21, 42); } }
uploads package to crates.io
/// 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> { // ... }
rustfmt? future! guidelines http://doc.rust-lang.org/1.0.0/style/
Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18 when stdlib doesn’t
cut it
#[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); }
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"));
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"); }
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));
3D game engine http://www.piston.rs/ https://github.com/PistonDevelopers /piston-examples
rusqlite postgres redis mysql
anymap capnproto chrono conrod docopt fuse gl glutin html5ever image
iron itertools nalgebra openssl quickcheck rand regex rustache rustless sodiumoxide ssh2 time winapi zmq ...
Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18 FFI to&from other
languages
#[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 } }
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() }; // ... }
#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; }
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"));
https://github.com/zsiciarz/rust-ffi-stringtools https://github.com/alexcrichton/rust-ffi-examples https://doc.rust-lang.org/book/ffi.html
Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18 Show me the
real deal
None
None
None
None
None
standard library docs rustbyexample.com users.rust-lang.org /r/rust #rustlang zsiciarz.github.io/24daysofrust
Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18
Zbigniew Siciarz @zsiciarz Rust Warsaw #1 2015-05-18